summaryrefslogtreecommitdiffstats
path: root/library/tcltest/tcltest.tcl
blob: d066a1b7466e76a992dbeae71074c4c24877ed6a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
# tcltest.tcl --
#
#	This file contains support code for the Tcl test suite.  It
#       defines the tcltest namespace and finds and defines the output
#       directory, constraints available, output and error channels,
#	etc. used by Tcl tests.  See the tcltest man page for more
#	details.
#
#       This design was based on the Tcl testing approach designed and
#       initially implemented by Mary Ann May-Pumphrey of Sun
#	Microsystems.
#
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
# Copyright (c) 2000 by Ajuba Solutions
# Contributions from Don Porter, NIST, 2002.  (not subject to US copyright)
# All rights reserved.

package require Tcl 8.5		;# -verbose line uses [info frame]
namespace eval tcltest {

    # When the version number changes, be sure to update the pkgIndex.tcl file,
    # and the install directory in the Makefiles.  When the minor version
    # changes (new feature) be sure to update the man page as well.
    variable Version 2.3.7

    # Compatibility support for dumb variables defined in tcltest 1
    # Do not use these.  Call [package provide Tcl] and [info patchlevel]
    # yourself.  You don't need tcltest to wrap it for you.
    variable version [package provide Tcl]
    variable patchLevel [info patchlevel]

##### Export the public tcltest procs; several categories
    #
    # Export the main functional commands that do useful things
    namespace export cleanupTests loadTestedCommands makeDirectory \
	makeFile removeDirectory removeFile runAllTests test

    # Export configuration commands that control the functional commands
    namespace export configure customMatch errorChannel interpreter \
	    outputChannel testConstraint

    # Export commands that are duplication (candidates for deprecation)
    namespace export bytestring		;# dups [encoding convertfrom identity]
    namespace export debug		;#	[configure -debug]
    namespace export errorFile		;#	[configure -errfile]
    namespace export limitConstraints	;#	[configure -limitconstraints]
    namespace export loadFile		;#	[configure -loadfile]
    namespace export loadScript		;#	[configure -load]
    namespace export match		;#	[configure -match]
    namespace export matchFiles		;#	[configure -file]
    namespace export matchDirectories	;#	[configure -relateddir]
    namespace export normalizeMsg	;#	application of [customMatch]
    namespace export normalizePath	;#	[file normalize] (8.4)
    namespace export outputFile		;#	[configure -outfile]
    namespace export preserveCore	;#	[configure -preservecore]
    namespace export singleProcess	;#	[configure -singleproc]
    namespace export skip		;#	[configure -skip]
    namespace export skipFiles		;#	[configure -notfile]
    namespace export skipDirectories	;#	[configure -asidefromdir]
    namespace export temporaryDirectory	;#	[configure -tmpdir]
    namespace export testsDirectory	;#	[configure -testdir]
    namespace export verbose		;#	[configure -verbose]
    namespace export viewFile		;#	binary encoding [read]
    namespace export workingDirectory	;#	[cd] [pwd]

    # Export deprecated commands for tcltest 1 compatibility
    namespace export getMatchingFiles mainThread restoreState saveState \
	    threadReap

    # tcltest::normalizePath --
    #
    #     This procedure resolves any symlinks in the path thus creating
    #     a path without internal redirection. It assumes that the
    #     incoming path is absolute.
    #
    # Arguments
    #     pathVar - name of variable containing path to modify.
    #
    # Results
    #     The path is modified in place.
    #
    # Side Effects:
    #     None.
    #
    proc normalizePath {pathVar} {
	upvar 1 $pathVar path
	set oldpwd [pwd]
	catch {cd $path}
	set path [pwd]
	cd $oldpwd
	return $path
    }

##### Verification commands used to test values of variables and options
    #
    # Verification command that accepts everything
    proc AcceptAll {value} {
	return $value
    }

    # Verification command that accepts valid Tcl lists
    proc AcceptList { list } {
	return [lrange $list 0 end]
    }

    # Verification command that accepts a glob pattern
    proc AcceptPattern { pattern } {
	return [AcceptAll $pattern]
    }

    # Verification command that accepts integers
    proc AcceptInteger { level } {
	return [incr level 0]
    }

    # Verification command that accepts boolean values
    proc AcceptBoolean { boolean } {
	return [expr {$boolean && $boolean}]
    }

    # Verification command that accepts (syntactically) valid Tcl scripts
    proc AcceptScript { script } {
	if {![info complete $script]} {
	    return -code error "invalid Tcl script: $script"
	}
	return $script
    }

    # Verification command that accepts (converts to) absolute pathnames
    proc AcceptAbsolutePath { path } {
	return [file join [pwd] $path]
    }

    # Verification command that accepts existing readable directories
    proc AcceptReadable { path } {
	if {![file readable $path]} {
	    return -code error "\"$path\" is not readable"
	}
	return $path
    }
    proc AcceptDirectory { directory } {
	set directory [AcceptAbsolutePath $directory]
	if {![file exists $directory]} {
	    return -code error "\"$directory\" does not exist"
	}
	if {![file isdir $directory]} {
	    return -code error "\"$directory\" is not a directory"
	}
	return [AcceptReadable $directory]
    }

##### Initialize internal arrays of tcltest, but only if the caller
    # has not already pre-initialized them.  This is done to support
    # compatibility with older tests that directly access internals
    # rather than go through command interfaces.
    #
    proc ArrayDefault {varName value} {
	variable $varName
	if {[array exists $varName]} {
	    return
	}
	if {[info exists $varName]} {
	    # Pre-initialized value is a scalar: destroy it!
	    unset $varName
	}
	array set $varName $value
    }

    # save the original environment so that it can be restored later
    ArrayDefault originalEnv [array get ::env]

    # initialize numTests array to keep track of the number of tests
    # that pass, fail, and are skipped.
    ArrayDefault numTests [list Total 0 Passed 0 Skipped 0 Failed 0]

    # createdNewFiles will store test files as indices and the list of
    # files (that should not have been) left behind by the test files
    # as values.
    ArrayDefault createdNewFiles {}

    # initialize skippedBecause array to keep track of constraints that
    # kept tests from running; a constraint name of "userSpecifiedSkip"
    # means that the test appeared on the list of tests that matched the
    # -skip value given to the flag; "userSpecifiedNonMatch" means that
    # the test didn't match the argument given to the -match flag; both
    # of these constraints are counted only if tcltest::debug is set to
    # true.
    ArrayDefault skippedBecause {}

    # initialize the testConstraints array to keep track of valid
    # predefined constraints (see the explanation for the
    # InitConstraints proc for more details).
    ArrayDefault testConstraints {}

##### Initialize internal variables of tcltest, but only if the caller
    # has not already pre-initialized them.  This is done to support
    # compatibility with older tests that directly access internals
    # rather than go through command interfaces.
    #
    proc Default {varName value {verify AcceptAll}} {
	variable $varName
	if {![info exists $varName]} {
	    variable $varName [$verify $value]
	} else {
	    variable $varName [$verify [set $varName]]
	}
    }

    # Save any arguments that we might want to pass through to other
    # programs.  This is used by the -args flag.
    # FINDUSER
    Default parameters {}

    # Count the number of files tested (0 if runAllTests wasn't called).
    # runAllTests will set testSingleFile to false, so stats will
    # not be printed until runAllTests calls the cleanupTests proc.
    # The currentFailure var stores the boolean value of whether the
    # current test file has had any failures.  The failFiles list
    # stores the names of test files that had failures.
    Default numTestFiles 0 AcceptInteger
    Default testSingleFile true AcceptBoolean
    Default currentFailure false AcceptBoolean
    Default failFiles {} AcceptList

    # Tests should remove all files they create.  The test suite will
    # check the current working dir for files created by the tests.
    # filesMade keeps track of such files created using the makeFile and
    # makeDirectory procedures.  filesExisted stores the names of
    # pre-existing files.
    #
    # Note that $filesExisted lists only those files that exist in
    # the original [temporaryDirectory].
    Default filesMade {} AcceptList
    Default filesExisted {} AcceptList
    proc FillFilesExisted {} {
	variable filesExisted

	# Save the names of files that already exist in the scratch directory.
	foreach file [glob -nocomplain -directory [temporaryDirectory] *] {
	    lappend filesExisted [file tail $file]
	}

	# After successful filling, turn this into a no-op.
	proc FillFilesExisted args {}
    }

    # Kept only for compatibility
    Default constraintsSpecified {} AcceptList
    trace add variable constraintsSpecified read [namespace code {
	    set constraintsSpecified [array names testConstraints] ;#}]

    # tests that use threads need to know which is the main thread
    Default mainThread 1
    variable mainThread
    if {[info commands thread::id] ne {}} {
	set mainThread [thread::id]
    } elseif {[info commands testthread] ne {}} {
	set mainThread [testthread id]
    }

    # Set workingDirectory to [pwd]. The default output directory for
    # Tcl tests is the working directory.  Whenever this value changes
    # change to that directory.
    variable workingDirectory
    trace add variable workingDirectory write \
	    [namespace code {cd $workingDirectory ;#}]

    Default workingDirectory [pwd] AcceptAbsolutePath
    proc workingDirectory { {dir ""} } {
	variable workingDirectory
	if {[llength [info level 0]] == 1} {
	    return $workingDirectory
	}
	set workingDirectory [AcceptAbsolutePath $dir]
    }

    # Set the location of the execuatble
    Default tcltest [info nameofexecutable]
    trace add variable tcltest write [namespace code {testConstraint stdio \
	    [eval [ConstraintInitializer stdio]] ;#}]

    # save the platform information so it can be restored later
    Default originalTclPlatform [array get ::tcl_platform]

    # If a core file exists, save its modification time.
    if {[file exists [file join [workingDirectory] core]]} {
	Default coreModTime \
		[file mtime [file join [workingDirectory] core]]
    }

    # stdout and stderr buffers for use when we want to store them
    Default outData {}
    Default errData {}

    # keep track of test level for nested test commands
    variable testLevel 0

    # the variables and procs that existed when saveState was called are
    # stored in a variable of the same name
    Default saveState {}

    # Internationalization support -- used in [SetIso8859_1_Locale] and
    # [RestoreLocale]. Those commands are used in cmdIL.test.

    if {![info exists [namespace current]::isoLocale]} {
	variable isoLocale fr
	switch -- $::tcl_platform(platform) {
	    "unix" {

		# Try some 'known' values for some platforms:

		switch -exact -- $::tcl_platform(os) {
		    "FreeBSD" {
			set isoLocale fr_FR.ISO_8859-1
		    }
		    HP-UX {
			set isoLocale fr_FR.iso88591
		    }
		    Linux -
		    IRIX {
			set isoLocale fr
		    }
		    default {

			# Works on SunOS 4 and Solaris, and maybe
			# others...  Define it to something else on your
			# system if you want to test those.

			set isoLocale iso_8859_1
		    }
		}
	    }
	    "windows" {
		set isoLocale French
	    }
	}
    }

    variable ChannelsWeOpened; array set ChannelsWeOpened {}
    # output goes to stdout by default
    Default outputChannel stdout
    proc outputChannel { {filename ""} } {
	variable outputChannel
	variable ChannelsWeOpened

	# This is very subtle and tricky, so let me try to explain.
	# (Hopefully this longer comment will be clear when I come
	# back in a few months, unlike its predecessor :) )
	# 
	# The [outputChannel] command (and underlying variable) have to
	# be kept in sync with the [configure -outfile] configuration
	# option ( and underlying variable Option(-outfile) ).  This is
	# accomplished with a write trace on Option(-outfile) that will
	# update [outputChannel] whenver a new value is written.  That
	# much is easy.
	#
	# The trick is that in order to maintain compatibility with
	# version 1 of tcltest, we must allow every configuration option
	# to get its inital value from command line arguments.  This is
	# accomplished by setting initial read traces on all the
	# configuration options to parse the command line option the first
	# time they are read.  These traces are cancelled whenever the
	# program itself calls [configure].
	# 
	# OK, then so to support tcltest 1 compatibility, it seems we want
	# to get the return from [outputFile] to trigger the read traces,
	# just in case.
	#
	# BUT!  A little known feature of Tcl variable traces is that 
	# traces are disabled during the handling of other traces.  So,
	# if we trigger read traces on Option(-outfile) and that triggers
	# command line parsing which turns around and sets an initial
	# value for Option(-outfile) -- <whew!> -- the write trace that
	# would keep [outputChannel] in sync with that new initial value
	# would not fire!
	#
	# SO, finally, as a workaround, instead of triggering read traces
	# by invoking [outputFile], we instead trigger the same set of
	# read traces by invoking [debug].  Any command that reads a
	# configuration option would do.  [debug] is just a handy one.
	# The end result is that we support tcltest 1 compatibility and
	# keep outputChannel and -outfile in sync in all cases.
	debug

	if {[llength [info level 0]] == 1} {
	    return $outputChannel
	}
	if {[info exists ChannelsWeOpened($outputChannel)]} {
	    close $outputChannel
	    unset ChannelsWeOpened($outputChannel)
	}
	switch -exact -- $filename {
	    stderr -
	    stdout {
		set outputChannel $filename
	    }
	    default {
		set outputChannel [open $filename a]
		set ChannelsWeOpened($outputChannel) 1

		# If we created the file in [temporaryDirectory], then
		# [cleanupTests] will delete it, unless we claim it was
		# already there.
		set outdir [normalizePath [file dirname \
			[file join [pwd] $filename]]]
		if {$outdir eq [temporaryDirectory]} {
		    variable filesExisted
		    FillFilesExisted
		    set filename [file tail $filename]
		    if {$filename ni $filesExisted} {
			lappend filesExisted $filename
		    }
		}
	    }
	}
	return $outputChannel
    }

    # errors go to stderr by default
    Default errorChannel stderr
    proc errorChannel { {filename ""} } {
	variable errorChannel
	variable ChannelsWeOpened

	# This is subtle and tricky.  See the comment above in
	# [outputChannel] for a detailed explanation.
	debug

	if {[llength [info level 0]] == 1} {
	    return $errorChannel
	}
	if {[info exists ChannelsWeOpened($errorChannel)]} {
	    close $errorChannel
	    unset ChannelsWeOpened($errorChannel)
	}
	switch -exact -- $filename {
	    stderr -
	    stdout {
		set errorChannel $filename
	    }
	    default {
		set errorChannel [open $filename a]
		set ChannelsWeOpened($errorChannel) 1

		# If we created the file in [temporaryDirectory], then
		# [cleanupTests] will delete it, unless we claim it was
		# already there.
		set outdir [normalizePath [file dirname \
			[file join [pwd] $filename]]]
		if {$outdir eq [temporaryDirectory]} {
		    variable filesExisted
		    FillFilesExisted
		    set filename [file tail $filename]
		    if {$filename ni $filesExisted} {
			lappend filesExisted $filename
		    }
		}
	    }
	}
	return $errorChannel
    }

##### Set up the configurable options
    #
    # The configurable options of the package
    variable Option; array set Option {}

    # Usage strings for those options
    variable Usage; array set Usage {}

    # Verification commands for those options
    variable Verify; array set Verify {}

    # Initialize the default values of the configurable options that are
    # historically associated with an exported variable.  If that variable
    # is already set, support compatibility by accepting its pre-set value.
    # Use [trace] to establish ongoing connection between the deprecated
    # exported variable and the modern option kept as a true internal var.
    # Also set up usage string and value testing for the option.
    proc Option {option value usage {verify AcceptAll} {varName {}}} {
	variable Option
	variable Verify
	variable Usage
	variable OptionControlledVariables
	variable DefaultValue
	set Usage($option) $usage
	set Verify($option) $verify
	set DefaultValue($option) $value
	if {[catch {$verify $value} msg]} {
	    return -code error $msg
	} else {
	    set Option($option) $msg
	}
	if {[string length $varName]} {
	    variable $varName
	    if {[info exists $varName]} {
		if {[catch {$verify [set $varName]} msg]} {
		    return -code error $msg
		} else {
		    set Option($option) $msg
		}
		unset $varName
	    }
	    namespace eval [namespace current] \
	    	    [list upvar 0 Option($option) $varName]
	    # Workaround for Bug (now Feature Request) 572889.  Grrrr....
	    # Track all the variables tied to options
	    lappend OptionControlledVariables $varName
	    # Later, set auto-configure read traces on all
	    # of them, since a single trace on Option does not work.
	    proc $varName {{value {}}} [subst -nocommands {
		if {[llength [info level 0]] == 2} {
		    Configure $option [set value]
		}
		return [Configure $option]
	    }]
	}
    }

    proc MatchingOption {option} {
	variable Option
	set match [array names Option $option*]
	switch -- [llength $match] {
	    0 {
		set sorted [lsort [array names Option]]
		set values [join [lrange $sorted 0 end-1] ", "]
		append values ", or [lindex $sorted end]"
		return -code error "unknown option $option: should be\
			one of $values"
	    }
	    1 {
		return [lindex $match 0]
	    }
	    default {
		# Exact match trumps ambiguity
		if {$option in $match} {
		    return $option
		}
		set values [join [lrange $match 0 end-1] ", "]
		append values ", or [lindex $match end]"
		return -code error "ambiguous option $option:\
			could match $values"
	    }
	}
    }

    proc EstablishAutoConfigureTraces {} {
	variable OptionControlledVariables
	foreach varName [concat $OptionControlledVariables Option] {
	    variable $varName
	    trace add variable $varName read [namespace code {
		    ProcessCmdLineArgs ;#}]
	}
    }

    proc RemoveAutoConfigureTraces {} {
	variable OptionControlledVariables
	foreach varName [concat $OptionControlledVariables Option] {
	    variable $varName
	    foreach pair [trace info variable $varName] {
		lassign $pair op cmd
		if {($op eq "read") &&
			[string match *ProcessCmdLineArgs* $cmd]} {
		    trace remove variable $varName $op $cmd
		}
	    }
	}
	# Once the traces are removed, this can become a no-op
	proc RemoveAutoConfigureTraces {} {}
    }

    proc Configure args {
	variable Option
	variable Verify
	set n [llength $args]
	if {$n == 0} {
	    return [lsort [array names Option]]
	}
	if {$n == 1} {
	    if {[catch {MatchingOption [lindex $args 0]} option]} {
		return -code error $option
	    }
	    return $Option($option)
	}
	while {[llength $args] > 1} {
	    if {[catch {MatchingOption [lindex $args 0]} option]} {
		return -code error $option
	    }
	    if {[catch {$Verify($option) [lindex $args 1]} value]} {
		return -code error "invalid $option\
			value \"[lindex $args 1]\": $value"
	    }
	    set Option($option) $value
	    set args [lrange $args 2 end]
	}
	if {[llength $args]} {
	    if {[catch {MatchingOption [lindex $args 0]} option]} {
		return -code error $option
	    }
	    return -code error "missing value for option $option"
	}
    }
    proc configure args {
	if {[llength $args] > 1} {
	    RemoveAutoConfigureTraces
	}
	set code [catch {Configure {*}$args} msg]
	return -code $code $msg
    }
    
    proc AcceptVerbose { level } {
	set level [AcceptList $level]
	if {[llength $level] == 1} {
	    if {![regexp {^(pass|body|skip|start|error|line)$} $level]} {
		# translate single characters abbreviations to expanded list
		set level [string map {p pass b body s skip t start e error l line} \
			[split $level {}]]
	    }
	}
	set valid [list]
	foreach v $level {
	    if {[regexp {^(pass|body|skip|start|error|line)$} $v]} {
		lappend valid $v
	    }
	}
	return $valid
    }

    proc IsVerbose {level} {
	variable Option
	return [expr {[lsearch -exact $Option(-verbose) $level] != -1}]
    }

    # Default verbosity is to show bodies of failed tests
    Option -verbose {body error} {
	Takes any combination of the values 'p', 's', 'b', 't', 'e' and 'l'.
	Test suite will display all passed tests if 'p' is specified, all
	skipped tests if 's' is specified, the bodies of failed tests if
	'b' is specified, and when tests start if 't' is specified.
	ErrorInfo is displayed if 'e' is specified. Source file line
	information of failed tests is displayed if 'l' is specified. 
    } AcceptVerbose verbose

    # Match and skip patterns default to the empty list, except for
    # matchFiles, which defaults to all .test files in the
    # testsDirectory and matchDirectories, which defaults to all
    # directories.
    Option -match * {
	Run all tests within the specified files that match one of the
	list of glob patterns given.
    } AcceptList match

    Option -skip {} {
	Skip all tests within the specified tests (via -match) and files
	that match one of the list of glob patterns given.
    } AcceptList skip

    Option -file *.test {
	Run tests in all test files that match the glob pattern given.
    } AcceptPattern matchFiles

    # By default, skip files that appear to be SCCS lock files.
    Option -notfile l.*.test {
	Skip all test files that match the glob pattern given.
    } AcceptPattern skipFiles

    Option -relateddir * {
	Run tests in directories that match the glob pattern given.
    } AcceptPattern matchDirectories

    Option -asidefromdir {} {
	Skip tests in directories that match the glob pattern given.
    } AcceptPattern skipDirectories

    # By default, don't save core files
    Option -preservecore 0 {
	If 2, save any core files produced during testing in the directory
	specified by -tmpdir. If 1, notify the user if core files are
	created.
    } AcceptInteger preserveCore

    # debug output doesn't get printed by default; debug level 1 spits
    # up only the tests that were skipped because they didn't match or
    # were specifically skipped.  A debug level of 2 would spit up the
    # tcltest variables and flags provided; a debug level of 3 causes
    # some additional output regarding operations of the test harness.
    # The tcltest package currently implements only up to debug level 3.
    Option -debug 0 {
	Internal debug level 
    } AcceptInteger debug

    proc SetSelectedConstraints args {
	variable Option
	foreach c $Option(-constraints) {
	    testConstraint $c 1
	}
    }
    Option -constraints {} {
	Do not skip the listed constraints listed in -constraints.
    } AcceptList
    trace add variable Option(-constraints) write \
	    [namespace code {SetSelectedConstraints ;#}]

    # Don't run only the "-constraint" specified tests by default
    proc ClearUnselectedConstraints args {
	variable Option
	variable testConstraints
	if {!$Option(-limitconstraints)} {return}
	foreach c [array names testConstraints] {
	    if {$c ni $Option(-constraints)} {
		testConstraint $c 0
	    }
	}
    }
    Option -limitconstraints 0 {
	whether to run only tests with the constraints
    } AcceptBoolean limitConstraints 
    trace add variable Option(-limitconstraints) write \
	    [namespace code {ClearUnselectedConstraints ;#}]

    # A test application has to know how to load the tested commands
    # into the interpreter.
    Option -load {} {
	Specifies the script to load the tested commands.
    } AcceptScript loadScript

    # Default is to run each test file in a separate process
    Option -singleproc 0 {
	whether to run all tests in one process
    } AcceptBoolean singleProcess 

    proc AcceptTemporaryDirectory { directory } {
	set directory [AcceptAbsolutePath $directory]
	if {![file exists $directory]} {
	    file mkdir $directory
	}
	set directory [AcceptDirectory $directory]
	if {![file writable $directory]} {
	    if {[workingDirectory] eq $directory} {
		# Special exception: accept the default value
		# even if the directory is not writable
		return $directory
	    }
	    return -code error "\"$directory\" is not writeable"
	}
	return $directory
    }

    # Directory where files should be created
    Option -tmpdir [workingDirectory] {
	Save temporary files in the specified directory.
    } AcceptTemporaryDirectory temporaryDirectory
    trace add variable Option(-tmpdir) write \
	    [namespace code {normalizePath Option(-tmpdir) ;#}]

    # Tests should not rely on the current working directory.
    # Files that are part of the test suite should be accessed relative
    # to [testsDirectory]
    Option -testdir [workingDirectory] {
	Search tests in the specified directory.
    } AcceptDirectory testsDirectory
    trace add variable Option(-testdir) write \
	    [namespace code {normalizePath Option(-testdir) ;#}]

    proc AcceptLoadFile { file } {
	if {$file eq {}} {return $file}
	set file [file join [temporaryDirectory] $file]
	return [AcceptReadable $file]
    }
    proc ReadLoadScript {args} {
	variable Option
	if {$Option(-loadfile) eq {}} {return}
	set tmp [open $Option(-loadfile) r]
	loadScript [read $tmp]
	close $tmp
    }
    Option -loadfile {} {
	Read the script to load the tested commands from the specified file.
    } AcceptLoadFile loadFile
    trace add variable Option(-loadfile) write [namespace code ReadLoadScript]

    proc AcceptOutFile { file } {
	if {[string equal stderr $file]} {return $file}
	if {[string equal stdout $file]} {return $file}
	return [file join [temporaryDirectory] $file]
    }

    # output goes to stdout by default
    Option -outfile stdout {
	Send output from test runs to the specified file.
    } AcceptOutFile outputFile
    trace add variable Option(-outfile) write \
	    [namespace code {outputChannel $Option(-outfile) ;#}]

    # errors go to stderr by default
    Option -errfile stderr {
	Send errors from test runs to the specified file.
    } AcceptOutFile errorFile
    trace add variable Option(-errfile) write \
	    [namespace code {errorChannel $Option(-errfile) ;#}]

    proc loadIntoSlaveInterpreter {slave args} {
	variable Version
	interp eval $slave [package ifneeded tcltest $Version]
	interp eval $slave "tcltest::configure {*}{$args}"
	interp alias $slave ::tcltest::ReportToMaster \
	    {} ::tcltest::ReportedFromSlave
    }
    proc ReportedFromSlave {total passed skipped failed because newfiles} {
	variable numTests
	variable skippedBecause
	variable createdNewFiles
	incr numTests(Total)   $total
	incr numTests(Passed)  $passed
	incr numTests(Skipped) $skipped
	incr numTests(Failed)  $failed
	foreach {constraint count} $because {
	    incr skippedBecause($constraint) $count
	}
	foreach {testfile created} $newfiles {
	    lappend createdNewFiles($testfile) {*}$created
	}
	return
    }
}

#####################################################################

# tcltest::Debug* --
#
#     Internal helper procedures to write out debug information
#     dependent on the chosen level. A test shell may overide
#     them, f.e. to redirect the output into a different
#     channel, or even into a GUI.

# tcltest::DebugPuts --
#
#     Prints the specified string if the current debug level is
#     higher than the provided level argument.
#
# Arguments:
#     level   The lowest debug level triggering the output
#     string  The string to print out.
#
# Results:
#     Prints the string. Nothing else is allowed.
#
# Side Effects:
#     None.
#

proc tcltest::DebugPuts {level string} {
    variable debug
    if {$debug >= $level} {
	puts $string
    }
    return
}

# tcltest::DebugPArray --
#
#     Prints the contents of the specified array if the current
#       debug level is higher than the provided level argument
#
# Arguments:
#     level           The lowest debug level triggering the output
#     arrayvar        The name of the array to print out.
#
# Results:
#     Prints the contents of the array. Nothing else is allowed.
#
# Side Effects:
#     None.
#

proc tcltest::DebugPArray {level arrayvar} {
    variable debug

    if {$debug >= $level} {
	catch {upvar 1 $arrayvar $arrayvar}
	parray $arrayvar
    }
    return
}

# Define our own [parray] in ::tcltest that will inherit use of the [puts]
# defined in ::tcltest.  NOTE: Ought to construct with [info args] and
# [info default], but can't be bothered now.  If [parray] changes, then
# this will need changing too.
auto_load ::parray
proc tcltest::parray {a {pattern *}} [info body ::parray]

# tcltest::DebugDo --
#
#     Executes the script if the current debug level is greater than
#       the provided level argument
#
# Arguments:
#     level   The lowest debug level triggering the execution.
#     script  The tcl script executed upon a debug level high enough.
#
# Results:
#     Arbitrary side effects, dependent on the executed script.
#
# Side Effects:
#     None.
#

proc tcltest::DebugDo {level script} {
    variable debug

    if {$debug >= $level} {
	uplevel 1 $script
    }
    return
}

#####################################################################

proc tcltest::Warn {msg} {
    puts [outputChannel] "WARNING: $msg"
}

# tcltest::mainThread
#
#     Accessor command for tcltest variable mainThread.
#
proc tcltest::mainThread { {new ""} } {
    variable mainThread
    if {[llength [info level 0]] == 1} {
	return $mainThread
    }
    set mainThread $new
}

# tcltest::testConstraint --
#
#	sets a test constraint to a value; to do multiple constraints,
#       call this proc multiple times.  also returns the value of the
#       named constraint if no value was supplied.
#
# Arguments:
#	constraint - name of the constraint
#       value - new value for constraint (should be boolean) - if not
#               supplied, this is a query
#
# Results:
#	content of tcltest::testConstraints($constraint)
#
# Side effects:
#	none

proc tcltest::testConstraint {constraint {value ""}} {
    variable testConstraints
    variable Option
    DebugPuts 3 "entering testConstraint $constraint $value"
    if {[llength [info level 0]] == 2} {
	return $testConstraints($constraint)
    }
    # Check for boolean values
    if {[catch {expr {$value && $value}} msg]} {
	return -code error $msg
    }
    if {[limitConstraints] && ($constraint ni $Option(-constraints))} {
	set value 0
    }
    set testConstraints($constraint) $value
}

# tcltest::interpreter --
#
#	the interpreter name stored in tcltest::tcltest
#
# Arguments:
#	executable name
#
# Results:
#	content of tcltest::tcltest
#
# Side effects:
#	None.

proc tcltest::interpreter { {interp ""} } {
    variable tcltest
    if {[llength [info level 0]] == 1} {
	return $tcltest
    }
    set tcltest $interp
}

#####################################################################

# tcltest::AddToSkippedBecause --
#
#	Increments the variable used to track how many tests were
#       skipped because of a particular constraint.
#
# Arguments:
#	constraint     The name of the constraint to be modified
#
# Results:
#	Modifies tcltest::skippedBecause; sets the variable to 1 if
#       didn't previously exist - otherwise, it just increments it.
#
# Side effects:
#	None.

proc tcltest::AddToSkippedBecause { constraint {value 1}} {
    # add the constraint to the list of constraints that kept tests
    # from running
    variable skippedBecause

    if {[info exists skippedBecause($constraint)]} {
	incr skippedBecause($constraint) $value
    } else {
	set skippedBecause($constraint) $value
    }
    return
}

# tcltest::PrintError --
#
#	Prints errors to tcltest::errorChannel and then flushes that
#       channel, making sure that all messages are < 80 characters per
#       line.
#
# Arguments:
#	errorMsg     String containing the error to be printed
#
# Results:
#	None.
#
# Side effects:
#	None.

proc tcltest::PrintError {errorMsg} {
    set InitialMessage "Error:  "
    set InitialMsgLen  [string length $InitialMessage]
    puts -nonewline [errorChannel] $InitialMessage

    # Keep track of where the end of the string is.
    set endingIndex [string length $errorMsg]

    if {$endingIndex < (80 - $InitialMsgLen)} {
	puts [errorChannel] $errorMsg
    } else {
	# Print up to 80 characters on the first line, including the
	# InitialMessage.
	set beginningIndex [string last " " [string range $errorMsg 0 \
		[expr {80 - $InitialMsgLen}]]]
	puts [errorChannel] [string range $errorMsg 0 $beginningIndex]

	while {$beginningIndex ne "end"} {
	    puts -nonewline [errorChannel] \
		    [string repeat " " $InitialMsgLen]
	    if {($endingIndex - $beginningIndex)
		    < (80 - $InitialMsgLen)} {
		puts [errorChannel] [string trim \
			[string range $errorMsg $beginningIndex end]]
		break
	    } else {
		set newEndingIndex [expr {[string last " " \
			[string range $errorMsg $beginningIndex \
				[expr {$beginningIndex
					+ (80 - $InitialMsgLen)}]
		]] + $beginningIndex}]
		if {($newEndingIndex <= 0)
			|| ($newEndingIndex <= $beginningIndex)} {
		    set newEndingIndex end
		}
		puts [errorChannel] [string trim \
			[string range $errorMsg \
			    $beginningIndex $newEndingIndex]]
		set beginningIndex $newEndingIndex
	    }
	}
    }
    flush [errorChannel]
    return
}

# tcltest::SafeFetch --
#
#	 The following trace procedure makes it so that we can safely
#        refer to non-existent members of the testConstraints array
#        without causing an error.  Instead, reading a non-existent
#        member will return 0. This is necessary because tests are
#        allowed to use constraint "X" without ensuring that
#        testConstraints("X") is defined.
#
# Arguments:
#	n1 - name of the array (testConstraints)
#       n2 - array key value (constraint name)
#       op - operation performed on testConstraints (generally r)
#
# Results:
#	none
#
# Side effects:
#	sets testConstraints($n2) to 0 if it's referenced but never
#       before used

proc tcltest::SafeFetch {n1 n2 op} {
    variable testConstraints
    DebugPuts 3 "entering SafeFetch $n1 $n2 $op"
    if {$n2 eq {}} {return}
    if {![info exists testConstraints($n2)]} {
	if {[catch {testConstraint $n2 [eval [ConstraintInitializer $n2]]}]} {
	    testConstraint $n2 0
	}
    }
}

# tcltest::ConstraintInitializer --
#
#	Get or set a script that when evaluated in the tcltest namespace
#	will return a boolean value with which to initialize the
#	associated constraint.
#
# Arguments:
#	constraint - name of the constraint initialized by the script
#	script - the initializer script
#
# Results
#	boolean value of the constraint - enabled or disabled
#
# Side effects:
#	Constraint is initialized for future reference by [test]
proc tcltest::ConstraintInitializer {constraint {script ""}} {
    variable ConstraintInitializer
    DebugPuts 3 "entering ConstraintInitializer $constraint $script"
    if {[llength [info level 0]] == 2} {
	return $ConstraintInitializer($constraint)
    }
    # Check for boolean values
    if {![info complete $script]} {
	return -code error "ConstraintInitializer must be complete script"
    }
    set ConstraintInitializer($constraint) $script
}

# tcltest::InitConstraints --
#
# Call all registered constraint initializers to force initialization
# of all known constraints.
# See the tcltest man page for the list of built-in constraints defined
# in this procedure.
#
# Arguments:
#	none
#
# Results:
#	The testConstraints array is reset to have an index for each
#	built-in test constraint.
#
# Side Effects:
#       None.
#

proc tcltest::InitConstraints {} {
    variable ConstraintInitializer
    initConstraintsHook
    foreach constraint [array names ConstraintInitializer] {
	testConstraint $constraint
    }
}

proc tcltest::DefineConstraintInitializers {} {
    ConstraintInitializer singleTestInterp {singleProcess}

    # All the 'pc' constraints are here for backward compatibility and
    # are not documented.  They have been replaced with equivalent 'win'
    # constraints.

    ConstraintInitializer unixOnly \
	    {string equal $::tcl_platform(platform) unix}
    ConstraintInitializer macOnly \
	    {string equal $::tcl_platform(platform) macintosh}
    ConstraintInitializer pcOnly \
	    {string equal $::tcl_platform(platform) windows}
    ConstraintInitializer winOnly \
	    {string equal $::tcl_platform(platform) windows}

    ConstraintInitializer unix {testConstraint unixOnly}
    ConstraintInitializer mac {testConstraint macOnly}
    ConstraintInitializer pc {testConstraint pcOnly}
    ConstraintInitializer win {testConstraint winOnly}

    ConstraintInitializer unixOrPc \
	    {expr {[testConstraint unix] || [testConstraint pc]}}
    ConstraintInitializer macOrPc \
	    {expr {[testConstraint mac] || [testConstraint pc]}}
    ConstraintInitializer unixOrWin \
	    {expr {[testConstraint unix] || [testConstraint win]}}
    ConstraintInitializer macOrWin \
	    {expr {[testConstraint mac] || [testConstraint win]}}
    ConstraintInitializer macOrUnix \
	    {expr {[testConstraint mac] || [testConstraint unix]}}

    ConstraintInitializer nt {string equal $::tcl_platform(os) "Windows NT"}
    ConstraintInitializer 95 {string equal $::tcl_platform(os) "Windows 95"}
    ConstraintInitializer 98 {string equal $::tcl_platform(os) "Windows 98"}

    # The following Constraints switches are used to mark tests that
    # should work, but have been temporarily disabled on certain
    # platforms because they don't and we haven't gotten around to
    # fixing the underlying problem.

    ConstraintInitializer tempNotPc {expr {![testConstraint pc]}}
    ConstraintInitializer tempNotWin {expr {![testConstraint win]}}
    ConstraintInitializer tempNotMac {expr {![testConstraint mac]}}
    ConstraintInitializer tempNotUnix {expr {![testConstraint unix]}}

    # The following Constraints switches are used to mark tests that
    # crash on certain platforms, so that they can be reactivated again
    # when the underlying problem is fixed.

    ConstraintInitializer pcCrash {expr {![testConstraint pc]}}
    ConstraintInitializer winCrash {expr {![testConstraint win]}}
    ConstraintInitializer macCrash {expr {![testConstraint mac]}}
    ConstraintInitializer unixCrash {expr {![testConstraint unix]}}

    # Skip empty tests

    ConstraintInitializer emptyTest {format 0}

    # By default, tests that expose known bugs are skipped.

    ConstraintInitializer knownBug {format 0}

    # By default, non-portable tests are skipped.

    ConstraintInitializer nonPortable {format 0}

    # Some tests require user interaction.

    ConstraintInitializer userInteraction {format 0}

    # Some tests must be skipped if the interpreter is not in
    # interactive mode

    ConstraintInitializer interactive \
	    {expr {[info exists ::tcl_interactive] && $::tcl_interactive}}

    # Some tests can only be run if the installation came from a CD
    # image instead of a web image.  Some tests must be skipped if you
    # are running as root on Unix.  Other tests can only be run if you
    # are running as root on Unix.

    ConstraintInitializer root {expr \
	    {($::tcl_platform(platform) eq "unix") &&
		    ($::tcl_platform(user) in {root {}})}}
    ConstraintInitializer notRoot {expr {![testConstraint root]}}

    # Set nonBlockFiles constraint: 1 means this platform supports
    # setting files into nonblocking mode.

    ConstraintInitializer nonBlockFiles {
	    set code [expr {[catch {set f [open defs r]}] 
		    || [catch {chan configure $f -blocking off}]}]
	    catch {close $f}
	    set code
    }

    # Set asyncPipeClose constraint: 1 means this platform supports
    # async flush and async close on a pipe.
    #
    # Test for SCO Unix - cannot run async flushing tests because a
    # potential problem with select is apparently interfering.
    # (Mark Diekhans).

    ConstraintInitializer asyncPipeClose {expr {
	    !([string equal unix $::tcl_platform(platform)] 
	    && ([catch {exec uname -X | fgrep {Release = 3.2v}}] == 0))}}

    # Test to see if we have a broken version of sprintf with respect
    # to the "e" format of floating-point numbers.

    ConstraintInitializer eformat {string equal [format %g 5e-5] 5e-05}

    # Test to see if execed commands such as cat, echo, rm and so forth
    # are present on this machine.

    ConstraintInitializer unixExecs {
	set code 1
        if {$::tcl_platform(platform) eq "macintosh"} {
	    set code 0
        }
        if {$::tcl_platform(platform) eq "windows"} {
	    if {[catch {
	        set file _tcl_test_remove_me.txt
	        makeFile {hello} $file
	    }]} {
	        set code 0
	    } elseif {
	        [catch {exec cat $file}] ||
	        [catch {exec echo hello}] ||
	        [catch {exec sh -c echo hello}] ||
	        [catch {exec wc $file}] ||
	        [catch {exec sleep 1}] ||
	        [catch {exec echo abc > $file}] ||
	        [catch {exec chmod 644 $file}] ||
	        [catch {exec rm $file}] ||
	        [llength [auto_execok mkdir]] == 0 ||
	        [llength [auto_execok fgrep]] == 0 ||
	        [llength [auto_execok grep]] == 0 ||
	        [llength [auto_execok ps]] == 0
	    } {
	        set code 0
	    }
	    removeFile $file
        }
	set code
    }

    ConstraintInitializer stdio {
	set code 0
	if {![catch {set f [open "|[list [interpreter]]" w]}]} {
	    if {![catch {puts $f exit}]} {
		if {![catch {close $f}]} {
		    set code 1
		}
	    }
	}
	set code
    }

    # Deliberately call socket with the wrong number of arguments.  The
    # error message you get will indicate whether sockets are available
    # on this system.

    ConstraintInitializer socket {
	catch {socket} msg
	string compare $msg "sockets are not available on this system"
    }

    # Check for internationalization
    ConstraintInitializer hasIsoLocale {
	if {[llength [info commands testlocale]] == 0} {
	    set code 0
	} else {
	    set code [string length [SetIso8859_1_Locale]]
	    RestoreLocale
	}
	set code
    }

}
#####################################################################

# Usage and command line arguments processing.

# tcltest::PrintUsageInfo
#
#	Prints out the usage information for package tcltest.  This can
#	be customized with the redefinition of [PrintUsageInfoHook].
#
# Arguments:
#	none
#
# Results:
#       none
#
# Side Effects:
#       none
proc tcltest::PrintUsageInfo {} {
    puts [Usage]
    PrintUsageInfoHook
}

proc tcltest::Usage { {option ""} } {
    variable Usage
    variable Verify
    if {[llength [info level 0]] == 1} {
	set msg "Usage: [file tail [info nameofexecutable]] script "
	append msg "?-help? ?flag value? ... \n"
	append msg "Available flags (and valid input values) are:"

	set max 0
	set allOpts [concat -help [Configure]]
	foreach opt $allOpts {
	    set foo [Usage $opt]
	    lassign $foo x type($opt) usage($opt)
	    set line($opt) "  $opt $type($opt)  "
	    set length($opt) [string length $line($opt)]
	    if {$length($opt) > $max} {set max $length($opt)}
	}
	set rest [expr {72 - $max}]
	foreach opt $allOpts {
	    append msg \n$line($opt)
	    append msg [string repeat " " [expr {$max - $length($opt)}]]
	    set u [string trim $usage($opt)]
	    catch {append u "  (default: \[[Configure $opt]])"}
	    regsub -all {\s*\n\s*} $u " " u
	    while {[string length $u] > $rest} {
		set break [string wordstart $u $rest]
		if {$break == 0} {
		    set break [string wordend $u 0]
		}
		append msg [string range $u 0 [expr {$break - 1}]]
		set u [string trim [string range $u $break end]]
		append msg \n[string repeat " " $max]
	    }
	    append msg $u
	}
	return $msg\n
    } elseif {$option eq "-help"} {
	return [list -help "" "Display this usage information."]
    } else {
	set type [lindex [info args $Verify($option)] 0]
	return [list $option $type $Usage($option)]
    }
}

# tcltest::ProcessFlags --
#
#	process command line arguments supplied in the flagArray - this
#	is called by processCmdLineArgs.  Modifies tcltest variables
#	according to the content of the flagArray.
#
# Arguments:
#	flagArray - array containing name/value pairs of flags
#
# Results:
#	sets tcltest variables according to their values as defined by
#       flagArray
#
# Side effects:
#	None.

proc tcltest::ProcessFlags {flagArray} {
    # Process -help first
    if {"-help" in $flagArray} {
	PrintUsageInfo
	exit 1
    }

    if {[llength $flagArray] == 0} {
	RemoveAutoConfigureTraces
    } else {
	set args $flagArray
	while {[llength $args] > 1 && [catch {configure {*}$args} msg]} {

	    # Something went wrong parsing $args for tcltest options
	    # Check whether the problem is "unknown option"
	    if {[regexp {^unknown option (\S+):} $msg -> option]} {
		# Could be this is an option the Hook knows about
		set moreOptions [processCmdLineArgsAddFlagsHook]
		if {$option ni $moreOptions} {
		    # Nope.  Report the error, including additional options,
		    # but keep going
		    if {[llength $moreOptions]} {
			append msg ", "
			append msg [join [lrange $moreOptions 0 end-1] ", "]
			append msg "or [lindex $moreOptions end]"
		    }
		    Warn $msg
		}
	    } else {
		# error is something other than "unknown option"
		# notify user of the error; and exit
		puts [errorChannel] $msg
		exit 1
	    }

	    # To recover, find that unknown option and remove up to it.
	    # then retry
	    while {[lindex $args 0] ne $option} {
		set args [lrange $args 2 end]
	    }
	    set args [lrange $args 2 end]
	}
	if {[llength $args] == 1} {
	    puts [errorChannel] \
		    "missing value for option [lindex $args 0]"
	    exit 1
	}
    }

    # Call the hook
    catch {
        array set flag $flagArray
        processCmdLineArgsHook [array get flag]
    }
    return
}

# tcltest::ProcessCmdLineArgs --
#
#       This procedure must be run after constraint initialization is
#	set up (by [DefineConstraintInitializers]) because some constraints
#	can be overridden.
#
#       Perform configuration according to the command-line options.
#
# Arguments:
#	none
#
# Results:
#	Sets the above-named variables in the tcltest namespace.
#
# Side Effects:
#       None.
#

proc tcltest::ProcessCmdLineArgs {} {
    variable originalEnv
    variable testConstraints

    # The "argv" var doesn't exist in some cases, so use {}.
    if {![info exists ::argv]} {
	ProcessFlags {}
    } else {
	ProcessFlags $::argv
    }

    # Spit out everything you know if we're at a debug level 2 or
    # greater
    DebugPuts 2 "Flags passed into tcltest:"
    if {[info exists ::env(TCLTEST_OPTIONS)]} {
	DebugPuts 2 \
		"    ::env(TCLTEST_OPTIONS): $::env(TCLTEST_OPTIONS)"
    }
    if {[info exists ::argv]} {
	DebugPuts 2 "    argv: $::argv"
    }
    DebugPuts    2 "tcltest::debug              = [debug]"
    DebugPuts    2 "tcltest::testsDirectory     = [testsDirectory]"
    DebugPuts    2 "tcltest::workingDirectory   = [workingDirectory]"
    DebugPuts    2 "tcltest::temporaryDirectory = [temporaryDirectory]"
    DebugPuts    2 "tcltest::outputChannel      = [outputChannel]"
    DebugPuts    2 "tcltest::errorChannel       = [errorChannel]"
    DebugPuts    2 "Original environment (tcltest::originalEnv):"
    DebugPArray  2 originalEnv
    DebugPuts    2 "Constraints:"
    DebugPArray  2 testConstraints
}

#####################################################################

# Code to run the tests goes here.

# tcltest::TestPuts --
#
#	Used to redefine puts in test environment.  Stores whatever goes
#	out on stdout in tcltest::outData and stderr in errData before
#	sending it on to the regular puts.
#
# Arguments:
#	same as standard puts
#
# Results:
#	none
#
# Side effects:
#       Intercepts puts; data that would otherwise go to stdout, stderr,
#	or file channels specified in outputChannel and errorChannel
#	does not get sent to the normal puts function.
namespace eval tcltest::Replace {
    namespace export puts
}
proc tcltest::Replace::puts {args} {
    variable [namespace parent]::outData
    variable [namespace parent]::errData
    switch [llength $args] {
	1 {
	    # Only the string to be printed is specified
	    append outData [lindex $args 0]\n
	    return
	    # return [Puts [lindex $args 0]]
	}
	2 {
	    # Either -nonewline or channelId has been specified
	    if {[lindex $args 0] eq "-nonewline"} {
		append outData [lindex $args end]
		return
		# return [Puts -nonewline [lindex $args end]]
	    } else {
		set channel [lindex $args 0]
		set newline \n
	    }
	}
	3 {
	    if {[lindex $args 0] eq "-nonewline"} {
		# Both -nonewline and channelId are specified, unless
		# it's an error.  -nonewline is supposed to be argv[0].
		set channel [lindex $args 1]
		set newline ""
	    }
	}
    }

    if {[info exists channel]} {
	if {$channel in [list [[namespace parent]::outputChannel] stdout]} {
	    append outData [lindex $args end]$newline
	    return
	} elseif {$channel in [list [[namespace parent]::errorChannel] stderr]} {
	    append errData [lindex $args end]$newline
	    return
	}
    }

    # If we haven't returned by now, we don't know how to handle the
    # input.  Let puts handle it.
    return [Puts {*}$args]
}

# tcltest::Eval --
#
#	Evaluate the script in the test environment.  If ignoreOutput is
#       false, store data sent to stderr and stdout in outData and
#       errData.  Otherwise, ignore this output altogether.
#
# Arguments:
#	script             Script to evaluate
#       ?ignoreOutput?     Indicates whether or not to ignore output
#			   sent to stdout & stderr
#
# Results:
#	result from running the script
#
# Side effects:
#	Empties the contents of outData and errData before running a
#	test if ignoreOutput is set to 0.

proc tcltest::Eval {script {ignoreOutput 1}} {
    variable outData
    variable errData
    DebugPuts 3 "[lindex [info level 0] 0] called"
    if {!$ignoreOutput} {
	set outData {}
	set errData {}
	rename ::puts [namespace current]::Replace::Puts
	namespace eval :: [list namespace import [namespace origin Replace::puts]]
	namespace import Replace::puts
    }
    set result [uplevel 1 $script]
    if {!$ignoreOutput} {
	namespace forget puts
	namespace eval :: namespace forget puts
	rename [namespace current]::Replace::Puts ::puts
    }
    return $result
}

# tcltest::CompareStrings --
#
#	compares the expected answer to the actual answer, depending on
#	the mode provided.  Mode determines whether a regexp, exact,
#	glob or custom comparison is done.
#
# Arguments:
#	actual - string containing the actual result
#       expected - pattern to be matched against
#       mode - type of comparison to be done
#
# Results:
#	result of the match
#
# Side effects:
#	None.

proc tcltest::CompareStrings {actual expected mode} {
    variable CustomMatch
    if {![info exists CustomMatch($mode)]} {
        return -code error "No matching command registered for `-match $mode'"
    }
    set match [namespace eval :: $CustomMatch($mode) [list $expected $actual]]
    if {[catch {expr {$match && $match}} result]} {
	return -code error "Invalid result from `-match $mode' command: $result"
    }
    return $match
}

# tcltest::customMatch --
#
#	registers a command to be called when a particular type of
#	matching is required.
#
# Arguments:
#	nickname - Keyword for the type of matching
#	cmd - Incomplete command that implements that type of matching
#		when completed with expected string and actual string
#		and then evaluated.
#
# Results:
#	None.
#
# Side effects:
#	Sets the variable tcltest::CustomMatch

proc tcltest::customMatch {mode script} {
    variable CustomMatch
    if {![info complete $script]} {
	return -code error \
		"invalid customMatch script; can't evaluate after completion"
    }
    set CustomMatch($mode) $script
}

# tcltest::SubstArguments list
#
# This helper function takes in a list of words, then perform a
# substitution on the list as though each word in the list is a separate
# argument to the Tcl function.  For example, if this function is
# invoked as:
#
#      SubstArguments {$a {$a}}
#
# Then it is as though the function is invoked as:
#
#      SubstArguments $a {$a}
#
# This code is adapted from Paul Duffin's function "SplitIntoWords".
# The original function can be found  on:
#
#      http://purl.org/thecliff/tcl/wiki/858.html
#
# Results:
#     a list containing the result of the substitution
#
# Exceptions:
#     An error may occur if the list containing unbalanced quote or
#     unknown variable.
#
# Side Effects:
#     None.
#

proc tcltest::SubstArguments {argList} {

    # We need to split the argList up into tokens but cannot use list
    # operations as they throw away some significant quoting, and
    # [split] ignores braces as it should.  Therefore what we do is
    # gradually build up a string out of whitespace seperated strings.
    # We cannot use [split] to split the argList into whitespace
    # separated strings as it throws away the whitespace which maybe
    # important so we have to do it all by hand.

    set result {}
    set token ""

    while {[string length $argList]} {
        # Look for the next word containing a quote: " { }
        if {[regexp -indices {[^ \t\n]*[\"\{\}]+[^ \t\n]*} \
		$argList all]} {
            # Get the text leading up to this word, but not including
	    # this word, from the argList.
            set text [string range $argList 0 \
		    [expr {[lindex $all 0] - 1}]]
            # Get the word with the quote
            set word [string range $argList \
                    [lindex $all 0] [lindex $all 1]]

            # Remove all text up to and including the word from the
            # argList.
            set argList [string range $argList \
                    [expr {[lindex $all 1] + 1}] end]
        } else {
            # Take everything up to the end of the argList.
            set text $argList
            set word {}
            set argList {}
        }

        if {$token ne {}} {
            # If we saw a word with quote before, then there is a
            # multi-word token starting with that word.  In this case,
            # add the text and the current word to this token.
            append token $text $word
        } else {
            # Add the text to the result.  There is no need to parse
            # the text because it couldn't be a part of any multi-word
            # token.  Then start a new multi-word token with the word
            # because we need to pass this token to the Tcl parser to
            # check for balancing quotes
            append result $text
            set token $word
        }

        if { [catch {llength $token} length] == 0 && $length == 1} {
            # The token is a valid list so add it to the result.
            # lappend result [string trim $token]
            append result \{$token\}
            set token {}
        }
    }

    # If the last token has not been added to the list then there
    # is a problem.
    if { [string length $token] } {
        error "incomplete token \"$token\""
    }

    return $result
}


# tcltest::test --
#
# This procedure runs a test and prints an error message if the test
# fails.  If verbose has been set, it also prints a message even if the
# test succeeds.  The test will be skipped if it doesn't match the
# match variable, if it matches an element in skip, or if one of the
# elements of "constraints" turns out not to be true.
#
# If testLevel is 1, then this is a top level test, and we record
# pass/fail information; otherwise, this information is not logged and
# is not added to running totals.
#
# Attributes:
#   Only description is a required attribute.  All others are optional.
#   Default values are indicated.
#
#   constraints -	A list of one or more keywords, each of which
#			must be the name of an element in the array
#			"testConstraints".  If any of these elements is
#			zero, the test is skipped. This attribute is
#			optional; default is {}
#   body -	        Script to run to carry out the test.  It must
#		        return a result that can be checked for
#		        correctness.  This attribute is optional;
#                       default is {}
#   result -	        Expected result from script.  This attribute is
#                       optional; default is {}.
#   output -            Expected output sent to stdout.  This attribute
#                       is optional; default is {}.
#   errorOutput -       Expected output sent to stderr.  This attribute
#                       is optional; default is {}.
#   returnCodes -       Expected return codes.  This attribute is
#                       optional; default is {0 2}.
#   setup -             Code to run before $script (above).  This
#                       attribute is optional; default is {}.
#   cleanup -           Code to run after $script (above).  This
#                       attribute is optional; default is {}.
#   match -             specifies type of matching to do on result,
#                       output, errorOutput; this must be a string
#			previously registered by a call to [customMatch].
#			The strings exact, glob, and regexp are pre-registered
#			by the tcltest package.  Default value is exact.
#
# Arguments:
#   name -		Name of test, in the form foo-1.2.
#   description -	Short textual description of the test, to
#  		  	help humans understand what it does.
#
# Results:
#	None.
#
# Side effects:
#       Just about anything is possible depending on the test.
#

proc tcltest::test {name description args} {
    global tcl_platform
    variable testLevel
    variable coreModTime
    DebugPuts 3 "test $name $args"
    DebugDo 1 {
	variable TestNames
	catch {
	    puts "test name '$name' re-used; prior use in $TestNames($name)"
	}
	set TestNames($name) [info script]
    }

    FillFilesExisted
    incr testLevel

    # Pre-define everything to null except output and errorOutput.  We
    # determine whether or not to trap output based on whether or not
    # these variables (output & errorOutput) are defined.
    lassign {} constraints setup cleanup body result returnCodes match

    # Set the default match mode
    set match exact

    # Set the default match values for return codes (0 is the standard
    # expected return value if everything went well; 2 represents
    # 'return' being used in the test script).
    set returnCodes [list 0 2]

    # The old test format can't have a 3rd argument (constraints or
    # script) that starts with '-'.
    if {[string match -* [lindex $args 0]] || ([llength $args] <= 1)} {
	if {[llength $args] == 1} {
	    set list [SubstArguments [lindex $args 0]]
	    foreach {element value} $list {
		set testAttributes($element) $value
	    }
	    foreach item {constraints match setup body cleanup \
		    result returnCodes output errorOutput} {
		if {[info exists testAttributes(-$item)]} {
		    set testAttributes(-$item) [uplevel 1 \
			    ::concat $testAttributes(-$item)]
		}
	    }
	} else {
	    array set testAttributes $args
	}

	set validFlags {-setup -cleanup -body -result -returnCodes \
		-match -output -errorOutput -constraints}

	foreach flag [array names testAttributes] {
	    if {$flag ni $validFlags} {
		incr testLevel -1
		set sorted [lsort $validFlags]
		set options [join [lrange $sorted 0 end-1] ", "]
		append options ", or [lindex $sorted end]"
		return -code error "bad option \"$flag\": must be $options"
	    }
	}

	# store whatever the user gave us
	foreach item [array names testAttributes] {
	    set [string trimleft $item "-"] $testAttributes($item)
	}

	# Check the values supplied for -match
	variable CustomMatch
	if {$match ni [array names CustomMatch]} {
	    incr testLevel -1
	    set sorted [lsort [array names CustomMatch]]
	    set values [join [lrange $sorted 0 end-1] ", "]
	    append values ", or [lindex $sorted end]"
	    return -code error "bad -match value \"$match\":\
		    must be $values"
	}

	# Replace symbolic valies supplied for -returnCodes
	foreach {strcode numcode} {ok 0 normal 0 error 1 return 2 break 3 continue 4} {
	    set returnCodes [string map -nocase [list $strcode $numcode] $returnCodes]
	}
    } else {
	# This is parsing for the old test command format; it is here
	# for backward compatibility.
	set result [lindex $args end]
	if {[llength $args] == 2} {
	    set body [lindex $args 0]
	} elseif {[llength $args] == 3} {
	    set constraints [lindex $args 0]
	    set body [lindex $args 1]
	} else {
	    incr testLevel -1
	    return -code error "wrong # args:\
		    should be \"test name desc ?options?\""
	}
    }

    if {[Skipped $name $constraints]} {
	incr testLevel -1
	return
    }

    # Save information about the core file.  
    if {[preserveCore]} {
	if {[file exists [file join [workingDirectory] core]]} {
	    set coreModTime [file mtime [file join [workingDirectory] core]]
	}
    }

    # First, run the setup script
    set code [catch {uplevel 1 $setup} setupMsg]
    if {$code == 1} {
	set errorInfo(setup) $::errorInfo
	set errorCode(setup) $::errorCode
    }
    set setupFailure [expr {$code != 0}]

    # Only run the test body if the setup was successful
    if {!$setupFailure} {

	# Verbose notification of $body start
	if {[IsVerbose start]} {
	    puts [outputChannel] "---- $name start"
	    flush [outputChannel]
	}

	set command [list [namespace origin RunTest] $name $body]
	if {[info exists output] || [info exists errorOutput]} {
	    set testResult [uplevel 1 [list [namespace origin Eval] $command 0]]
	} else {
	    set testResult [uplevel 1 [list [namespace origin Eval] $command 1]]
	}
	lassign $testResult actualAnswer returnCode
	if {$returnCode == 1} {
	    set errorInfo(body) $::errorInfo
	    set errorCode(body) $::errorCode
	}
    }

    # Always run the cleanup script
    set code [catch {uplevel 1 $cleanup} cleanupMsg]
    if {$code == 1} {
	set errorInfo(cleanup) $::errorInfo
	set errorCode(cleanup) $::errorCode
    }
    set cleanupFailure [expr {$code != 0}]

    set coreFailure 0
    set coreMsg ""
    # check for a core file first - if one was created by the test,
    # then the test failed
    if {[preserveCore]} {
	if {[file exists [file join [workingDirectory] core]]} {
	    # There's only a test failure if there is a core file
	    # and (1) there previously wasn't one or (2) the new
	    # one is different from the old one.
	    if {[info exists coreModTime]} {
		if {$coreModTime != [file mtime \
			[file join [workingDirectory] core]]} {
		    set coreFailure 1
		}
	    } else {
		set coreFailure 1
	    }
	
	    if {([preserveCore] > 1) && ($coreFailure)} {
		append coreMsg "\nMoving file to:\
		    [file join [temporaryDirectory] core-$name]"
		catch {file rename -force -- \
		    [file join [workingDirectory] core] \
		    [file join [temporaryDirectory] core-$name]
		} msg
		if {$msg ne {}} {
		    append coreMsg "\nError:\
			Problem renaming core file: $msg"
		}
	    }
	}
    }

    # check if the return code matched the expected return code
    set codeFailure 0
    if {!$setupFailure && ($returnCode ni $returnCodes)} {
	set codeFailure 1
    }

    # If expected output/error strings exist, we have to compare
    # them.  If the comparison fails, then so did the test.
    set outputFailure 0
    variable outData
    if {[info exists output] && !$codeFailure} {
	if {[set outputCompare [catch {
	    CompareStrings $outData $output $match
	} outputMatch]] == 0} {
	    set outputFailure [expr {!$outputMatch}]
	} else {
	    set outputFailure 1
	}
    }

    set errorFailure 0
    variable errData
    if {[info exists errorOutput] && !$codeFailure} {
	if {[set errorCompare [catch {
	    CompareStrings $errData $errorOutput $match
	} errorMatch]] == 0} {
	    set errorFailure [expr {!$errorMatch}]
	} else {
	    set errorFailure 1
	}
    }

    # check if the answer matched the expected answer
    # Only check if we ran the body of the test (no setup failure)
    if {$setupFailure || $codeFailure} {
	set scriptFailure 0
    } elseif {[set scriptCompare [catch {
	CompareStrings $actualAnswer $result $match
    } scriptMatch]] == 0} {
	set scriptFailure [expr {!$scriptMatch}]
    } else {
	set scriptFailure 1
    }

    # if we didn't experience any failures, then we passed
    variable numTests
    if {!($setupFailure || $cleanupFailure || $coreFailure
	    || $outputFailure || $errorFailure || $codeFailure
	    || $scriptFailure)} {
	if {$testLevel == 1} {
	    incr numTests(Passed)
	    if {[IsVerbose pass]} {
		puts [outputChannel] "++++ $name PASSED"
	    }
	}
	incr testLevel -1
	return
    }

    # We know the test failed, tally it...
    if {$testLevel == 1} {
	incr numTests(Failed)
    }

    # ... then report according to the type of failure
    variable currentFailure true
    if {![IsVerbose body]} {
	set body ""
    }	
    puts [outputChannel] "\n"
    if {[IsVerbose line]} {
	if {![catch {set testFrame [info frame -1]}] &&
		[dict get $testFrame type] eq "source"} {
	    set testFile [dict get $testFrame file]
	    set testLine [dict get $testFrame line]
	} else {
	    set testFile [file normalize [uplevel 1 {info script}]]
	    if {[file readable $testFile]} {
		set testFd [open $testFile r]
		set testLine [expr {[lsearch -regexp \
			[split [read $testFd] "\n"] \
			"^\[ \t\]*test [string map {. \\.} $name] "] + 1}]
		close $testFd
	    }
	}
	if {[info exists testLine]} {
	    puts [outputChannel] "$testFile:$testLine: error: test failed:\
		    $name [string trim $description]"
	}
    }	
    puts [outputChannel] "==== $name\
	    [string trim $description] FAILED"
    if {[string length $body]} {
	puts [outputChannel] "==== Contents of test case:"
	puts [outputChannel] $body
    }
    if {$setupFailure} {
	puts [outputChannel] "---- Test setup\
		failed:\n$setupMsg"
	if {[info exists errorInfo(setup)]} {
	    puts [outputChannel] "---- errorInfo(setup): $errorInfo(setup)"
	    puts [outputChannel] "---- errorCode(setup): $errorCode(setup)"
	}
    }
    if {$scriptFailure} {
	if {$scriptCompare} {
	    puts [outputChannel] "---- Error testing result: $scriptMatch"
	} else {
	    puts [outputChannel] "---- Result was:\n$actualAnswer"
	    puts [outputChannel] "---- Result should have been\
		    ($match matching):\n$result"
	}
    }
    if {$codeFailure} {
	switch -- $returnCode {
	    0 { set msg "Test completed normally" }
	    1 { set msg "Test generated error" }
	    2 { set msg "Test generated return exception" }
	    3 { set msg "Test generated break exception" }
	    4 { set msg "Test generated continue exception" }
	    default { set msg "Test generated exception" }
	}
	puts [outputChannel] "---- $msg; Return code was: $returnCode"
	puts [outputChannel] "---- Return code should have been\
		one of: $returnCodes"
	if {[IsVerbose error]} {
	    if {[info exists errorInfo(body)] && (1 ni $returnCodes)} {
		puts [outputChannel] "---- errorInfo: $errorInfo(body)"
		puts [outputChannel] "---- errorCode: $errorCode(body)"
	    }
	}
    }
    if {$outputFailure} {
	if {$outputCompare} {
	    puts [outputChannel] "---- Error testing output: $outputMatch"
	} else {
	    puts [outputChannel] "---- Output was:\n$outData"
	    puts [outputChannel] "---- Output should have been\
		    ($match matching):\n$output"
	}
    }
    if {$errorFailure} {
	if {$errorCompare} {
	    puts [outputChannel] "---- Error testing errorOutput: $errorMatch"
	} else {
	    puts [outputChannel] "---- Error output was:\n$errData"
	    puts [outputChannel] "---- Error output should have\
		    been ($match matching):\n$errorOutput"
	}
    }
    if {$cleanupFailure} {
	puts [outputChannel] "---- Test cleanup failed:\n$cleanupMsg"
	if {[info exists errorInfo(cleanup)]} {
	    puts [outputChannel] "---- errorInfo(cleanup): $errorInfo(cleanup)"
	    puts [outputChannel] "---- errorCode(cleanup): $errorCode(cleanup)"
	}
    }
    if {$coreFailure} {
	puts [outputChannel] "---- Core file produced while running\
		test!  $coreMsg"
    }
    puts [outputChannel] "==== $name FAILED\n"

    incr testLevel -1
    return
}

# Skipped --
#
# Given a test name and it constraints, returns a boolean indicating
# whether the current configuration says the test should be skipped.
#
# Side Effects:  Maintains tally of total tests seen and tests skipped.
#
proc tcltest::Skipped {name constraints} {
    variable testLevel
    variable numTests
    variable testConstraints

    if {$testLevel == 1} {
	incr numTests(Total)
    }
    # skip the test if it's name matches an element of skip
    foreach pattern [skip] {
	if {[string match $pattern $name]} {
	    if {$testLevel == 1} {
		incr numTests(Skipped)
		DebugDo 1 {AddToSkippedBecause userSpecifiedSkip}
	    }
	    return 1
	}
    }
    # skip the test if it's name doesn't match any element of match
    set ok 0
    foreach pattern [match] {
	if {[string match $pattern $name]} {
	    set ok 1
	    break
	}
    }
    if {!$ok} {
	if {$testLevel == 1} {
	    incr numTests(Skipped)
	    DebugDo 1 {AddToSkippedBecause userSpecifiedNonMatch}
	}
	return 1
    }
    if {$constraints eq {}} {
	# If we're limited to the listed constraints and there aren't
	# any listed, then we shouldn't run the test.
	if {[limitConstraints]} {
	    AddToSkippedBecause userSpecifiedLimitConstraint
	    if {$testLevel == 1} {
		incr numTests(Skipped)
	    }
	    return 1
	}
    } else {
	# "constraints" argument exists;
	# make sure that the constraints are satisfied.

	set doTest 0
	if {[string match {*[$\[]*} $constraints] != 0} {
	    # full expression, e.g. {$foo > [info tclversion]}
	    catch {set doTest [uplevel #0 [list expr $constraints]]}
	} elseif {[regexp {[^.:_a-zA-Z0-9 \n\r\t]+} $constraints] != 0} {
	    # something like {a || b} should be turned into
	    # $testConstraints(a) || $testConstraints(b).
	    regsub -all {[.\w]+} $constraints {$testConstraints(&)} c
	    catch {set doTest [eval [list expr $c]]}
	} elseif {![catch {llength $constraints}]} {
	    # just simple constraints such as {unixOnly fonts}.
	    set doTest 1
	    foreach constraint $constraints {
		if {(![info exists testConstraints($constraint)]) \
			|| (!$testConstraints($constraint))} {
		    set doTest 0

		    # store the constraint that kept the test from
		    # running
		    set constraints $constraint
		    break
		}
	    }
	}
	
	if {!$doTest} {
	    if {[IsVerbose skip]} {
		puts [outputChannel] "++++ $name SKIPPED: $constraints"
	    }

	    if {$testLevel == 1} {
		incr numTests(Skipped)
		AddToSkippedBecause $constraints
	    }
	    return 1
	}
    }
    return 0
}

# RunTest --
#
# This is where the body of a test is evaluated.  The combination of
# [RunTest] and [Eval] allows the output and error output of the test
# body to be captured for comparison against the expected values.

proc tcltest::RunTest {name script} {
    DebugPuts 3 "Running $name {$script}"

    # If there is no "memory" command (because memory debugging isn't
    # enabled), then don't attempt to use the command.

    if {[llength [info commands memory]] == 1} {
	memory tag $name
    }

    set code [catch {uplevel 1 $script} actualAnswer]

    return [list $actualAnswer $code]
}

#####################################################################

# tcltest::cleanupTestsHook --
#
#	This hook allows a harness that builds upon tcltest to specify
#       additional things that should be done at cleanup.
#

if {[llength [info commands tcltest::cleanupTestsHook]] == 0} {
    proc tcltest::cleanupTestsHook {} {}
}

# tcltest::cleanupTests --
#
# Remove files and dirs created using the makeFile and makeDirectory
# commands since the last time this proc was invoked.
#
# Print the names of the files created without the makeFile command
# since the tests were invoked.
#
# Print the number tests (total, passed, failed, and skipped) since the
# tests were invoked.
#
# Restore original environment (as reported by special variable env).
#
# Arguments:
#      calledFromAllFile - if 0, behave as if we are running a single
#      test file within an entire suite of tests.  if we aren't running
#      a single test file, then don't report status.  check for new
#      files created during the test run and report on them.  if 1,
#      report collated status from all the test file runs.
#
# Results:
#      None.
#
# Side Effects:
#      None
#

proc tcltest::cleanupTests {{calledFromAllFile 0}} {
    variable filesMade
    variable filesExisted
    variable createdNewFiles
    variable testSingleFile
    variable numTests
    variable numTestFiles
    variable failFiles
    variable skippedBecause
    variable currentFailure
    variable originalEnv
    variable originalTclPlatform
    variable coreModTime

    FillFilesExisted
    set testFileName [file tail [info script]]

    # Hook to handle reporting to a parent interpreter
    if {[llength [info commands [namespace current]::ReportToMaster]]} {
	ReportToMaster $numTests(Total) $numTests(Passed) $numTests(Skipped) \
	    $numTests(Failed) [array get skippedBecause] \
	    [array get createdNewFiles]
	set testSingleFile false
    }

    # Call the cleanup hook
    cleanupTestsHook

    # Remove files and directories created by the makeFile and
    # makeDirectory procedures.  Record the names of files in
    # workingDirectory that were not pre-existing, and associate them
    # with the test file that created them.

    if {!$calledFromAllFile} {
	foreach file $filesMade {
	    if {[file exists $file]} {
		DebugDo 1 {Warn "cleanupTests deleting $file..."}
		catch {file delete -force -- $file}
	    }
	}
	set currentFiles {}
	foreach file [glob -nocomplain \
		-directory [temporaryDirectory] *] {
	    lappend currentFiles [file tail $file]
	}
	set newFiles {}
	foreach file $currentFiles {
	    if {$file ni $filesExisted} {
		lappend newFiles $file
	    }
	}
	set filesExisted $currentFiles
	if {[llength $newFiles] > 0} {
	    set createdNewFiles($testFileName) $newFiles
	}
    }

    if {$calledFromAllFile || $testSingleFile} {

	# print stats

	puts -nonewline [outputChannel] "$testFileName:"
	foreach index [list "Total" "Passed" "Skipped" "Failed"] {
	    puts -nonewline [outputChannel] \
		    "\t$index\t$numTests($index)"
	}
	puts [outputChannel] ""

	# print number test files sourced
	# print names of files that ran tests which failed

	if {$calledFromAllFile} {
	    puts [outputChannel] \
		    "Sourced $numTestFiles Test Files."
	    set numTestFiles 0
	    if {[llength $failFiles] > 0} {
		puts [outputChannel] \
			"Files with failing tests: $failFiles"
		set failFiles {}
	    }
	}

	# if any tests were skipped, print the constraints that kept
	# them from running.

	set constraintList [array names skippedBecause]
	if {[llength $constraintList] > 0} {
	    puts [outputChannel] \
		    "Number of tests skipped for each constraint:"
	    foreach constraint [lsort $constraintList] {
		puts [outputChannel] \
			"\t$skippedBecause($constraint)\t$constraint"
		unset skippedBecause($constraint)
	    }
	}

	# report the names of test files in createdNewFiles, and reset
	# the array to be empty.

	set testFilesThatTurded [lsort [array names createdNewFiles]]
	if {[llength $testFilesThatTurded] > 0} {
	    puts [outputChannel] "Warning: files left behind:"
	    foreach testFile $testFilesThatTurded {
		puts [outputChannel] \
			"\t$testFile:\t$createdNewFiles($testFile)"
		unset createdNewFiles($testFile)
	    }
	}

	# reset filesMade, filesExisted, and numTests

	set filesMade {}
	foreach index [list "Total" "Passed" "Skipped" "Failed"] {
	    set numTests($index) 0
	}

	# exit only if running Tk in non-interactive mode
	# This should be changed to determine if an event
	# loop is running, which is the real issue.
	# Actually, this doesn't belong here at all.  A package
	# really has no business [exit]-ing an application.
	if {![catch {package present Tk}] && ![testConstraint interactive]} {
	    exit
	}
    } else {

	# if we're deferring stat-reporting until all files are sourced,
	# then add current file to failFile list if any tests in this
	# file failed

	if {$currentFailure && ($testFileName ni $failFiles)} {
	    lappend failFiles $testFileName
	}
	set currentFailure false

	# restore the environment to the state it was in before this package
	# was loaded

	set newEnv {}
	set changedEnv {}
	set removedEnv {}
	foreach index [array names ::env] {
	    if {[info exists originalEnv($index)]} {
		if {$::env($index) != $originalEnv($index)} {
		    lappend changedEnv $index
		    set ::env($index) $originalEnv($index)
		}
	    }
	}
	foreach index [array names ::env] {
	    if {![info exists originalEnv($index)]} {
		lappend newEnv $index
		unset ::env($index)
	    }
	}
	foreach index [array names originalEnv] {
	    if {![info exists ::env($index)]} {
		lappend removedEnv $index
		set ::env($index) $originalEnv($index)
	    }
	}
	if {[llength $newEnv] > 0} {
	    puts [outputChannel] \
		    "env array elements created:\t$newEnv"
	}
	if {[llength $changedEnv] > 0} {
	    puts [outputChannel] \
		    "env array elements changed:\t$changedEnv"
	}
	if {[llength $removedEnv] > 0} {
	    puts [outputChannel] \
		    "env array elements removed:\t$removedEnv"
	}

	set changedTclPlatform {}
	foreach index [array names originalTclPlatform] {
	    if {$::tcl_platform($index) \
		    != $originalTclPlatform($index)} {
		lappend changedTclPlatform $index
		set ::tcl_platform($index) $originalTclPlatform($index)
	    }
	}
	if {[llength $changedTclPlatform] > 0} {
	    puts [outputChannel] "tcl_platform array elements\
		    changed:\t$changedTclPlatform"
	}

	if {[file exists [file join [workingDirectory] core]]} {
	    if {[preserveCore] > 1} {
		puts "rename core file (> 1)"
		puts [outputChannel] "produced core file! \
			Moving file to: \
			[file join [temporaryDirectory] core-$testFileName]"
		catch {file rename -force -- \
			[file join [workingDirectory] core] \
			[file join [temporaryDirectory] core-$testFileName]
		} msg
		if {$msg ne {}} {
		    PrintError "Problem renaming file: $msg"
		}
	    } else {
		# Print a message if there is a core file and (1) there
		# previously wasn't one or (2) the new one is different
		# from the old one.

		if {[info exists coreModTime]} {
		    if {$coreModTime != [file mtime \
			    [file join [workingDirectory] core]]} {
			puts [outputChannel] "A core file was created!"
		    }
		} else {
		    puts [outputChannel] "A core file was created!"
		}
	    }
	}
    }
    flush [outputChannel]
    flush [errorChannel]
    return
}

#####################################################################

# Procs that determine which tests/test files to run

# tcltest::GetMatchingFiles
#
#       Looks at the patterns given to match and skip files and uses
#	them to put together a list of the tests that will be run.
#
# Arguments:
#       directory to search
#
# Results:
#       The constructed list is returned to the user.  This will
#	primarily be used in 'all.tcl' files.  It is used in
#	runAllTests.
#
# Side Effects:
#       None

# a lower case version is needed for compatibility with tcltest 1.0
proc tcltest::getMatchingFiles args {GetMatchingFiles {*}$args}

proc tcltest::GetMatchingFiles { args } {
    if {[llength $args]} {
	set dirList $args
    } else {
	# Finding tests only in [testsDirectory] is normal operation.
	# This procedure is written to accept multiple directory arguments
	# only to satisfy version 1 compatibility.
	set dirList [list [testsDirectory]]
    }

    set matchingFiles [list]
    foreach directory $dirList {

	# List files in $directory that match patterns to run.
	set matchFileList [list]
	foreach match [matchFiles] {
	    set matchFileList [concat $matchFileList \
		    [glob -directory $directory -types {b c f p s} \
		    -nocomplain -- $match]]
	}

	# List files in $directory that match patterns to skip.
	set skipFileList [list]
	foreach skip [skipFiles] {
	    set skipFileList [concat $skipFileList \
		    [glob -directory $directory -types {b c f p s} \
		    -nocomplain -- $skip]]
	}

	# Add to result list all files in match list and not in skip list
	foreach file $matchFileList {
	    if {$file ni $skipFileList} {
		lappend matchingFiles $file
	    }
	}
    }

    if {[llength $matchingFiles] == 0} {
	PrintError "No test files remain after applying your match and\
		skip patterns!"
    }
    return $matchingFiles
}

# tcltest::GetMatchingDirectories --
#
#	Looks at the patterns given to match and skip directories and
#	uses them to put together a list of the test directories that we
#	should attempt to run.  (Only subdirectories containing an
#	"all.tcl" file are put into the list.)
#
# Arguments:
#	root directory from which to search
#
# Results:
#	The constructed list is returned to the user.  This is used in
#	the primary all.tcl file.
#
# Side Effects:
#       None.

proc tcltest::GetMatchingDirectories {rootdir} {

    # Determine the skip list first, to avoid [glob]-ing over subdirectories
    # we're going to throw away anyway.  Be sure we skip the $rootdir if it
    # comes up to avoid infinite loops.
    set skipDirs [list $rootdir]
    foreach pattern [skipDirectories] {
	set skipDirs [concat $skipDirs [glob -directory $rootdir -types d \
		-nocomplain -- $pattern]]
    }

    # Now step through the matching directories, prune out the skipped ones
    # as you go.
    set matchDirs [list]
    foreach pattern [matchDirectories] {
	foreach path [glob -directory $rootdir -types d -nocomplain -- \
		$pattern] {
	    if {$path ni $skipDirs} {
		set matchDirs [concat $matchDirs [GetMatchingDirectories $path]]
		if {[file exists [file join $path all.tcl]]} {
		    lappend matchDirs $path
		}
	    }
	}
    }

    if {[llength $matchDirs] == 0} {
	DebugPuts 1 "No test directories remain after applying match\
		and skip patterns!"
    }
    return $matchDirs
}

# tcltest::runAllTests --
#
#	prints output and sources test files according to the match and
#	skip patterns provided.  after sourcing test files, it goes on
#	to source all.tcl files in matching test subdirectories.
#
# Arguments:
#	shell being tested
#
# Results:
#	None.
#
# Side effects:
#	None.

proc tcltest::runAllTests { {shell ""} } {
    variable testSingleFile
    variable numTestFiles
    variable numTests
    variable failFiles
    variable DefaultValue

    FillFilesExisted
    if {[llength [info level 0]] == 1} {
	set shell [interpreter]
    }

    set testSingleFile false

    puts [outputChannel] "Tests running in interp:  $shell"
    puts [outputChannel] "Tests located in:  [testsDirectory]"
    puts [outputChannel] "Tests running in:  [workingDirectory]"
    puts [outputChannel] "Temporary files stored in\
	    [temporaryDirectory]"

    # [file system] first available in Tcl 8.4
    if {![catch {file system [testsDirectory]} result]
	    && ([lindex $result 0] ne "native")} {
	# If we aren't running in the native filesystem, then we must
	# run the tests in a single process (via 'source'), because
	# trying to run then via a pipe will fail since the files don't
	# really exist.
	singleProcess 1
    }

    if {[singleProcess]} {
	puts [outputChannel] \
		"Test files sourced into current interpreter"
    } else {
	puts [outputChannel] \
		"Test files run in separate interpreters"
    }
    if {[llength [skip]] > 0} {
	puts [outputChannel] "Skipping tests that match:  [skip]"
    }
    puts [outputChannel] "Running tests that match:  [match]"

    if {[llength [skipFiles]] > 0} {
	puts [outputChannel] \
		"Skipping test files that match:  [skipFiles]"
    }
    if {[llength [matchFiles]] > 0} {
	puts [outputChannel] \
		"Only running test files that match:  [matchFiles]"
    }

    set timeCmd {clock format [clock seconds]}
    puts [outputChannel] "Tests began at [eval $timeCmd]"

    # Run each of the specified tests
    foreach file [lsort [GetMatchingFiles]] {
	set tail [file tail $file]
	puts [outputChannel] $tail
	flush [outputChannel]

	if {[singleProcess]} {
	    incr numTestFiles
	    uplevel 1 [list ::source $file]
	} else {
	    # Pass along our configuration to the child processes.
	    # EXCEPT for the -outfile, because the parent process
	    # needs to read and process output of children.
	    set childargv [list]
	    foreach opt [Configure] {
		if {$opt eq "-outfile"} {continue}
		set value [Configure $opt]
		# Don't bother passing default configuration options
		if {$value eq $DefaultValue($opt)} {
			continue
		}
		lappend childargv $opt $value
	    }
	    set cmd [linsert $childargv 0 | $shell $file]
	    if {[catch {
		incr numTestFiles
		set pipeFd [open $cmd "r"]
		while {[gets $pipeFd line] >= 0} {
		    if {[regexp [join {
			    {^([^:]+):\t}
			    {Total\t([0-9]+)\t}
			    {Passed\t([0-9]+)\t}
			    {Skipped\t([0-9]+)\t}
			    {Failed\t([0-9]+)}
			    } ""] $line null testFile \
			    Total Passed Skipped Failed]} {
			foreach index {Total Passed Skipped Failed} {
			    incr numTests($index) [set $index]
			}
			if {$Failed > 0} {
			    lappend failFiles $testFile
			}
		    } elseif {[regexp [join {
			    {^Number of tests skipped }
			    {for each constraint:}
			    {|^\t(\d+)\t(.+)$}
			    } ""] $line match skipped constraint]} {
			if {[string match \t* $match]} {
			    AddToSkippedBecause $constraint $skipped
			}
		    } else {
			puts [outputChannel] $line
		    }
		}
		close $pipeFd
	    } msg]} {
		puts [outputChannel] "Test file error: $msg"
		# append the name of the test to a list to be reported
		# later
		lappend testFileFailures $file
	    }
	}
    }

    # cleanup
    puts [outputChannel] "\nTests ended at [eval $timeCmd]"
    cleanupTests 1
    if {[info exists testFileFailures]} {
	puts [outputChannel] "\nTest files exiting with errors:  \n"
	foreach file $testFileFailures {
	    puts [outputChannel] "  [file tail $file]\n"
	}
    }

    # Checking for subdirectories in which to run tests
    foreach directory [GetMatchingDirectories [testsDirectory]] {
	set dir [file tail $directory]
	puts [outputChannel] [string repeat ~ 44]
	puts [outputChannel] "$dir test began at [eval $timeCmd]\n"
	
	uplevel 1 [list ::source [file join $directory all.tcl]]
	
	set endTime [eval $timeCmd]
	puts [outputChannel] "\n$dir test ended at $endTime"
	puts [outputChannel] ""
	puts [outputChannel] [string repeat ~ 44]
    }
    return
}

#####################################################################

# Test utility procs - not used in tcltest, but may be useful for
# testing.

# tcltest::loadTestedCommands --
#
#     Uses the specified script to load the commands to test. Allowed to
#     be empty, as the tested commands could have been compiled into the
#     interpreter.
#
# Arguments
#     none
#
# Results
#     none
#
# Side Effects:
#     none.

proc tcltest::loadTestedCommands {} {
    return [uplevel 1 [loadScript]]
}

# tcltest::saveState --
#
#	Save information regarding what procs and variables exist.
#
# Arguments:
#	none
#
# Results:
#	Modifies the variable saveState
#
# Side effects:
#	None.

proc tcltest::saveState {} {
    variable saveState
    uplevel 1 [list ::set [namespace which -variable saveState]] \
	    {[::list [::info procs] [::info vars]]}
    DebugPuts  2 "[lindex [info level 0] 0]: $saveState"
    return
}

# tcltest::restoreState --
#
#	Remove procs and variables that didn't exist before the call to
#       [saveState].
#
# Arguments:
#	none
#
# Results:
#	Removes procs and variables from your environment if they don't
#	exist in the saveState variable.
#
# Side effects:
#	None.

proc tcltest::restoreState {} {
    variable saveState
    foreach p [uplevel 1 {::info procs}] {
	if {($p ni [lindex $saveState 0]) && ("[namespace current]::$p" ne
		[uplevel 1 [list ::namespace origin $p]])} {

	    DebugPuts 2 "[lindex [info level 0] 0]: Removing proc $p"
	    uplevel 1 [list ::catch [list ::rename $p {}]]
	}
    }
    foreach p [uplevel 1 {::info vars}] {
	if {$p ni [lindex $saveState 1]} {
	    DebugPuts 2 "[lindex [info level 0] 0]:\
		    Removing variable $p"
	    uplevel 1 [list ::catch [list ::unset $p]]
	}
    }
    return
}

# tcltest::normalizeMsg --
#
#	Removes "extra" newlines from a string.
#
# Arguments:
#	msg        String to be modified
#
# Results:
#	string with extra newlines removed
#
# Side effects:
#	None.

proc tcltest::normalizeMsg {msg} {
    regsub "\n$" [string tolower $msg] "" msg
    set msg [string map [list "\n\n" "\n"] $msg]
    return [string map [list "\n\}" "\}"] $msg]
}

# tcltest::makeFile --
#
# Create a new file with the name <name>, and write <contents> to it.
#
# If this file hasn't been created via makeFile since the last time
# cleanupTests was called, add it to the $filesMade list, so it will be
# removed by the next call to cleanupTests.
#
# Arguments:
#	contents        content of the new file
#       name            name of the new file
#       directory       directory name for new file
#
# Results:
#	absolute path to the file created
#
# Side effects:
#	None.

proc tcltest::makeFile {contents name {directory ""}} {
    variable filesMade
    FillFilesExisted

    if {[llength [info level 0]] == 3} {
	set directory [temporaryDirectory]
    }

    set fullName [file join $directory $name]

    DebugPuts 3 "[lindex [info level 0] 0]:\
	     putting ``$contents'' into $fullName"

    set fd [open $fullName w]
    chan configure $fd -translation lf
    if {[string index $contents end] eq "\n"} {
	puts -nonewline $fd $contents
    } else {
	puts $fd $contents
    }
    close $fd

    if {$fullName ni $filesMade} {
	lappend filesMade $fullName
    }
    return $fullName
}

# tcltest::removeFile --
#
#	Removes the named file from the filesystem
#
# Arguments:
#	name          file to be removed
#       directory     directory from which to remove file
#
# Results:
#	return value from [file delete]
#
# Side effects:
#	None.

proc tcltest::removeFile {name {directory ""}} {
    variable filesMade
    FillFilesExisted
    if {[llength [info level 0]] == 2} {
	set directory [temporaryDirectory]
    }
    set fullName [file join $directory $name]
    DebugPuts 3 "[lindex [info level 0] 0]: removing $fullName"
    set idx [lsearch -exact $filesMade $fullName]
    set filesMade [lreplace $filesMade $idx $idx]
    if {$idx == -1} {
	DebugDo 1 {
	    Warn "removeFile removing \"$fullName\":\n  not created by makeFile"
	}
    } 
    if {![file isfile $fullName]} {
	DebugDo 1 {
	    Warn "removeFile removing \"$fullName\":\n  not a file"
	}
    }
    return [file delete -- $fullName]
}

# tcltest::makeDirectory --
#
# Create a new dir with the name <name>.
#
# If this dir hasn't been created via makeDirectory since the last time
# cleanupTests was called, add it to the $directoriesMade list, so it
# will be removed by the next call to cleanupTests.
#
# Arguments:
#       name            name of the new directory
#       directory       directory in which to create new dir
#
# Results:
#	absolute path to the directory created
#
# Side effects:
#	None.

proc tcltest::makeDirectory {name {directory ""}} {
    variable filesMade
    FillFilesExisted
    if {[llength [info level 0]] == 2} {
	set directory [temporaryDirectory]
    }
    set fullName [file join $directory $name]
    DebugPuts 3 "[lindex [info level 0] 0]: creating $fullName"
    file mkdir $fullName
    if {$fullName ni $filesMade} {
	lappend filesMade $fullName
    }
    return $fullName
}

# tcltest::removeDirectory --
#
#	Removes a named directory from the file system.
#
# Arguments:
#	name          Name of the directory to remove
#       directory     Directory from which to remove
#
# Results:
#	return value from [file delete]
#
# Side effects:
#	None

proc tcltest::removeDirectory {name {directory ""}} {
    variable filesMade
    FillFilesExisted
    if {[llength [info level 0]] == 2} {
	set directory [temporaryDirectory]
    }
    set fullName [file join $directory $name]
    DebugPuts 3 "[lindex [info level 0] 0]: deleting $fullName"
    set idx [lsearch -exact $filesMade $fullName]
    set filesMade [lreplace $filesMade $idx $idx]
    if {$idx == -1} {
	DebugDo 1 {
	    Warn "removeDirectory removing \"$fullName\":\n  not created\
		    by makeDirectory"
	}
    } 
    if {![file isdirectory $fullName]} {
	DebugDo 1 {
	    Warn "removeDirectory removing \"$fullName\":\n  not a directory"
	}
    }
    return [file delete -force -- $fullName]
}

# tcltest::viewFile --
#
#	reads the content of a file and returns it
#
# Arguments:
#	name of the file to read
#       directory in which file is located
#
# Results:
#	content of the named file
#
# Side effects:
#	None.

proc tcltest::viewFile {name {directory ""}} {
    FillFilesExisted
    if {[llength [info level 0]] == 2} {
	set directory [temporaryDirectory]
    }
    set fullName [file join $directory $name]
    set f [open $fullName]
    set data [read -nonewline $f]
    close $f
    return $data
}

# tcltest::bytestring --
#
# Construct a string that consists of the requested sequence of bytes,
# as opposed to a string of properly formed UTF-8 characters.
# This allows the tester to
# 1. Create denormalized or improperly formed strings to pass to C
#    procedures that are supposed to accept strings with embedded NULL
#    bytes.
# 2. Confirm that a string result has a certain pattern of bytes, for
#    instance to confirm that "\xe0\0" in a Tcl script is stored
#    internally in UTF-8 as the sequence of bytes "\xc3\xa0\xc0\x80".
#
# Generally, it's a bad idea to examine the bytes in a Tcl string or to
# construct improperly formed strings in this manner, because it involves
# exposing that Tcl uses UTF-8 internally.
#
# Arguments:
#	string being converted
#
# Results:
#	result fom encoding
#
# Side effects:
#	None

proc tcltest::bytestring {string} {
    return [encoding convertfrom identity $string]
}

# tcltest::OpenFiles --
#
#	used in io tests, uses testchannel
#
# Arguments:
#	None.
#
# Results:
#	???
#
# Side effects:
#	None.

proc tcltest::OpenFiles {} {
    if {[catch {testchannel open} result]} {
	return {}
    }
    return $result
}

# tcltest::LeakFiles --
#
#	used in io tests, uses testchannel
#
# Arguments:
#	None.
#
# Results:
#	???
#
# Side effects:
#	None.

proc tcltest::LeakFiles {old} {
    if {[catch {testchannel open} new]} {
	return {}
    }
    set leak {}
    foreach p $new {
	if {$p ni $old} {
	    lappend leak $p
	}
    }
    return $leak
}

#
# Internationalization / ISO support procs     -- dl
#

# tcltest::SetIso8859_1_Locale --
#
#	used in cmdIL.test, uses testlocale
#
# Arguments:
#	None.
#
# Results:
#	None.
#
# Side effects:
#	None.

proc tcltest::SetIso8859_1_Locale {} {
    variable previousLocale
    variable isoLocale
    if {[info commands testlocale] != ""} {
	set previousLocale [testlocale ctype]
	testlocale ctype $isoLocale
    }
    return
}

# tcltest::RestoreLocale --
#
#	used in cmdIL.test, uses testlocale
#
# Arguments:
#	None.
#
# Results:
#	None.
#
# Side effects:
#	None.

proc tcltest::RestoreLocale {} {
    variable previousLocale
    if {[info commands testlocale] != ""} {
	testlocale ctype $previousLocale
    }
    return
}

# tcltest::threadReap --
#
#	Kill all threads except for the main thread.
#	Do nothing if testthread is not defined.
#
# Arguments:
#	none.
#
# Results:
#	Returns the number of existing threads.
#
# Side Effects:
#       none.
#

proc tcltest::threadReap {} {
    if {[info commands testthread] ne {}} {

	# testthread built into tcltest

	testthread errorproc ThreadNullError
	while {[llength [testthread names]] > 1} {
	    foreach tid [testthread names] {
		if {$tid != [mainThread]} {
		    catch {
			testthread send -async $tid {testthread exit}
		    }
		}
	    }
	    ## Enter a bit a sleep to give the threads enough breathing
	    ## room to kill themselves off, otherwise the end up with a
	    ## massive queue of repeated events
	    after 1
	}
	testthread errorproc ThreadError
	return [llength [testthread names]]
    } elseif {[info commands thread::id] ne {}} {
	
	# Thread extension

	thread::errorproc ThreadNullError
	while {[llength [thread::names]] > 1} {
	    foreach tid [thread::names] {
		if {$tid != [mainThread]} {
		    catch {thread::send -async $tid {thread::exit}}
		}
	    }
	    ## Enter a bit a sleep to give the threads enough breathing
	    ## room to kill themselves off, otherwise the end up with a
	    ## massive queue of repeated events
	    after 1
	}
	thread::errorproc ThreadError
	return [llength [thread::names]]
    } else {
	return 1
    }
    return 0
}

# Initialize the constraints and set up command line arguments
namespace eval tcltest {
    # Define initializers for all the built-in contraint definitions
    DefineConstraintInitializers

    # Set up the constraints in the testConstraints array to be lazily
    # initialized by a registered initializer, or by "false" if no
    # initializer is registered.
    trace add variable testConstraints read [namespace code SafeFetch]

    # Only initialize constraints at package load time if an
    # [initConstraintsHook] has been pre-defined.  This is only
    # for compatibility support.  The modern way to add a custom
    # test constraint is to just call the [testConstraint] command
    # straight away, without all this "hook" nonsense.
    if {[namespace current] eq
	    [namespace qualifiers [namespace which initConstraintsHook]]} {
	InitConstraints
    } else {
	proc initConstraintsHook {} {}
    }

    # Define the standard match commands
    customMatch exact	[list string equal]
    customMatch glob	[list string match]
    customMatch regexp	[list regexp --]

    # If the TCLTEST_OPTIONS environment variable exists, configure
    # tcltest according to the option values it specifies.  This has
    # the effect of resetting tcltest's default configuration.
    proc ConfigureFromEnvironment {} {
	upvar #0 env(TCLTEST_OPTIONS) options
	if {[catch {llength $options} msg]} {
	    Warn "invalid TCLTEST_OPTIONS \"$options\":\n  invalid\
		    Tcl list: $msg"
	    return
	}
	if {[llength $options] % 2} {
	    Warn "invalid TCLTEST_OPTIONS: \"$options\":\n  should be\
		    -option value ?-option value ...?"
	    return
	}
	if {[catch {Configure {*}$options} msg]} {
	    Warn "invalid TCLTEST_OPTIONS: \"$options\":\n  $msg"
	    return
	}
    }
    if {[info exists ::env(TCLTEST_OPTIONS)]} {
	ConfigureFromEnvironment
    }

    proc LoadTimeCmdLineArgParsingRequired {} {
	set required false
	if {[info exists ::argv] && ("-help" in $::argv)} {
	    # The command line asks for -help, so give it (and exit)
	    # right now.  ([configure] does not process -help)
	    set required true
	}
	foreach hook { PrintUsageInfoHook processCmdLineArgsHook
			processCmdLineArgsAddFlagsHook } {
	    if {[namespace current] eq
		    [namespace qualifiers [namespace which $hook]]} {
		set required true
	    } else {
		proc $hook args {}
	    }
	}
	return $required
    }

    # Only initialize configurable options from the command line arguments
    # at package load time if necessary for backward compatibility.  This
    # lets the tcltest user call [configure] for themselves if they wish.
    # Traces are established for auto-configuration from the command line
    # if any configurable options are accessed before the user calls
    # [configure].
    if {[LoadTimeCmdLineArgParsingRequired]} {
	ProcessCmdLineArgs
    } else {
	EstablishAutoConfigureTraces
    }

    package provide [namespace tail [namespace current]] $Version
}