summaryrefslogtreecommitdiffstats
path: root/tests/defs.tcl
blob: 245ec6adb52d60b14f180900692cdec71d1285f4 (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
# defs.tcl --
#
#	This file contains support code for the Tcl/Tk test suite.It is
#	It is normally sourced by the individual files in the test suite
#	before they run their tests.  This improved approach to testing
#	was designed and initially implemented by Mary Ann May-Pumphrey
#	of Sun Microsystems.
#
# Copyright (c) 1990-1994 The Regents of the University of California.
# Copyright (c) 1994-1996 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
# All rights reserved.
# 
# RCS: @(#) $Id: defs.tcl,v 1.5 1999/05/25 20:40:54 stanton Exp $

# Initialize wish shell

if {[info exists tk_version]} {
    tk appname tktest
    wm title . tktest
} else {

    # Ensure that we have a minimal auto_path so we don't pick up extra junk.

    set auto_path [list [info library]]
}

# create the "tcltest" namespace for all testing variables and procedures

namespace eval tcltest {
    set procList [list test cleanupTests dotests saveState restoreState \
	    normalizeMsg makeFile removeFile makeDirectory removeDirectory \
	    viewFile bytestring set_iso8859_1_locale restore_locale \
	    safeFetch threadReap]
    if {[info exists tk_version]} {
	lappend procList setupbg dobg bgReady cleanupbg fixfocus
    }
    foreach proc $procList {
	namespace export $proc
    }

    # ::tcltest::verbose defaults to "b"

    variable verbose "b"

    # match defaults to the empty list

    variable match {}

    # skip defaults to the empty list

    variable skip {}

    # Tests should not rely on the current working directory.
    # Files that are part of the test suite should be accessed relative to
    # ::tcltest::testsDir.

    set originalDir [pwd]
    set tDir [file join $originalDir [file dirname [info script]]]
    cd $tDir
    variable testsDir [pwd]
    cd $originalDir

    # Count the number of files tested (0 if all.tcl wasn't called).
    # The all.tcl file will set testSingleFile to false, so stats will
    # not be printed until all.tcl 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.

    variable numTestFiles 0
    variable testSingleFile true
    variable currentFailure false
    variable failFiles {}

    # Tests should remove all files they create.  The test suite will
    # check the current working dir for files created by the tests.
    # ::tcltest::filesMade keeps track of such files created using the
    # ::tcltest::makeFile and ::tcltest::makeDirectory procedures.
    # ::tcltest::filesExisted stores the names of pre-existing files.

    variable filesMade {}
    variable filesExisted {}

    # ::tcltest::numTests will store test files as indices and the list
    # of files (that should not have been) left behind by the test files.

    array set ::tcltest::createdNewFiles {}

    # initialize ::tcltest::numTests array to keep track fo the number of
    # tests that pass, fial, and are skipped.

    array set numTests [list Total 0 Passed 0 Skipped 0 Failed 0]

    # initialize ::tcltest::skippedBecause array to keep track of
    # constraints that kept tests from running

    array set ::tcltest::skippedBecause {}

    # tests that use thread need to know which is the main thread

    variable ::tcltest::mainThread 1
    if {[info commands testthread] != {}} {
	set ::tcltest::mainThread [testthread names]
    }
}

# If there is no "memory" command (because memory debugging isn't
# enabled), generate a dummy command that does nothing.

if {[info commands memory] == ""} {
    proc memory args {}
}

# ::tcltest::initConfig --
#
# Check configuration information that will determine which tests
# to run.  To do this, create an array ::tcltest::testConfig.  Each
# element has a 0 or 1 value.  If the element is "true" then tests
# with that constraint will be run, otherwise tests with that constraint
# will be skipped.  See the README file for the list of built-in
# constraints defined in this procedure.
#
# Arguments:
#	none
#
# Results:
#	The ::tcltest::testConfig array is reset to have an index for
#	each built-in test constraint.

proc ::tcltest::initConfig {} {

    global tcl_platform tcl_interactive tk_version

    catch {unset ::tcltest::testConfig}

    # The following trace procedure makes it so that we can safely refer to
    # non-existent members of the ::tcltest::testConfig 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 ::tcltest::testConfig("X") is defined.

    trace variable ::tcltest::testConfig r ::tcltest::safeFetch

    proc ::tcltest::safeFetch {n1 n2 op} {
	if {($n2 != {}) && ([info exists ::tcltest::testConfig($n2)] == 0)} {
	    set ::tcltest::testConfig($n2) 0
	}
    }

    set ::tcltest::testConfig(unixOnly) \
	    [expr {$tcl_platform(platform) == "unix"}]
    set ::tcltest::testConfig(macOnly) \
	    [expr {$tcl_platform(platform) == "macintosh"}]
    set ::tcltest::testConfig(pcOnly) \
	    [expr {$tcl_platform(platform) == "windows"}]

    set ::tcltest::testConfig(unix) $::tcltest::testConfig(unixOnly)
    set ::tcltest::testConfig(mac) $::tcltest::testConfig(macOnly)
    set ::tcltest::testConfig(pc) $::tcltest::testConfig(pcOnly)

    set ::tcltest::testConfig(unixOrPc) \
	    [expr {$::tcltest::testConfig(unix) || $::tcltest::testConfig(pc)}]
    set ::tcltest::testConfig(macOrPc) \
	    [expr {$::tcltest::testConfig(mac) || $::tcltest::testConfig(pc)}]
    set ::tcltest::testConfig(macOrUnix) \
	    [expr {$::tcltest::testConfig(mac) || $::tcltest::testConfig(unix)}]

    set ::tcltest::testConfig(nt) [expr {$tcl_platform(os) == "Windows NT"}]
    set ::tcltest::testConfig(95) [expr {$tcl_platform(os) == "Windows 95"}]

    # The following config 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.

    set ::tcltest::testConfig(tempNotPc) [expr {!$::tcltest::testConfig(pc)}]
    set ::tcltest::testConfig(tempNotMac) [expr {!$::tcltest::testConfig(mac)}]
    set ::tcltest::testConfig(tempNotUnix) [expr {!$::tcltest::testConfig(unix)}]

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

    set ::tcltest::testConfig(pcCrash) [expr {!$::tcltest::testConfig(pc)}]
    set ::tcltest::testConfig(macCrash) [expr {!$::tcltest::testConfig(mac)}]
    set ::tcltest::testConfig(unixCrash) [expr {!$::tcltest::testConfig(unix)}]

    # Set the "fonts" constraint for wish apps

    if {[info exists tk_version]} {
	set ::tcltest::testConfig(fonts) 1
	catch {destroy .e}
	entry .e -width 0 -font {Helvetica -12} -bd 1
	.e insert end "a.bcd"
	if {([winfo reqwidth .e] != 37) || ([winfo reqheight .e] != 20)} {
	    set ::tcltest::testConfig(fonts) 0
	}
	destroy .e
	catch {destroy .t}
	text .t -width 80 -height 20 -font {Times -14} -bd 1
	pack .t
	.t insert end "This is\na dot."
	update
	set x [list [.t bbox 1.3] [.t bbox 2.5]]
	destroy .t
	if {[string match {{22 3 6 15} {31 18 [34] 15}} $x] == 0} {
	    set ::tcltest::testConfig(fonts) 0
	}
    }

    # Skip empty tests

    set ::tcltest::testConfig(emptyTest) 0

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

    set ::tcltest::testConfig(knownBug) 0

    # By default, non-portable tests are skipped.

    set ::tcltest::testConfig(nonPortable) 0

    # Some tests require user interaction.

    set ::tcltest::testConfig(userInteraction) 0

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

    set ::tcltest::testConfig(interactive) $tcl_interactive

    # 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.

    set ::tcltest::testConfig(root) 0
    set ::tcltest::testConfig(notRoot) 1
    set user {}
    if {$tcl_platform(platform) == "unix"} {
	catch {set user [exec whoami]}
	if {$user == ""} {
	    catch {regexp {^[^(]*\(([^)]*)\)} [exec id] dummy user}
	}
	if {($user == "root") || ($user == "")} {
	    set ::tcltest::testConfig(root) 1
	    set ::tcltest::testConfig(notRoot) 0
	}
    }

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

    if {[catch {set f [open defs r]}]} {
	set ::tcltest::testConfig(nonBlockFiles) 1
    } else {
	if {[catch {fconfigure $f -blocking off}] == 0} {
	    set ::tcltest::testConfig(nonBlockFiles) 1
	} else {
	    set ::tcltest::testConfig(nonBlockFiles) 0
	}
	close $f
    }

    # 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).

    if {$tcl_platform(platform) == "unix"} {
	if {[catch {exec uname -X | fgrep {Release = 3.2v}}] == 0} {
	    set ::tcltest::testConfig(asyncPipeClose) 0
	} else {
	    set ::tcltest::testConfig(asyncPipeClose) 1
	}
    } else {
	set ::tcltest::testConfig(asyncPipeClose) 1
    }

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

    set ::tcltest::testConfig(eformat) 1
    if {[string compare "[format %g 5e-5]" "5e-05"] != 0} {
	set ::tcltest::testConfig(eformat) 0
    }

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

    set ::tcltest::testConfig(unixExecs) 1
    if {$tcl_platform(platform) == "macintosh"} {
	set ::tcltest::testConfig(unixExecs) 0
    }
    if {($::tcltest::testConfig(unixExecs) == 1) && \
	    ($tcl_platform(platform) == "windows")} {
	if {[catch {exec cat defs}] == 1} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec echo hello}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec sh -c echo hello}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec wc defs}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {$::tcltest::testConfig(unixExecs) == 1} {
	    exec echo hello > removeMe
	    if {[catch {exec rm removeMe}] == 1} {
		set ::tcltest::testConfig(unixExecs) 0
	    }
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec sleep 1}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec fgrep unixExecs defs}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec ps}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec echo abc > removeMe}] == 0) && \
		([catch {exec chmod 644 removeMe}] == 1) && \
		([catch {exec rm removeMe}] == 0)} {
	    set ::tcltest::testConfig(unixExecs) 0
	} else {
	    catch {exec rm -f removeMe}
	}
	if {($::tcltest::testConfig(unixExecs) == 1) && \
		([catch {exec mkdir removeMe}] == 1)} {
	    set ::tcltest::testConfig(unixExecs) 0
	} else {
	    catch {exec rm -r removeMe}
	}
    }
}

::tcltest::initConfig


# ::tcltest::processCmdLineArgs --
#
#	Use command line args to set the verbose, skip, and
#	match variables.  This procedure must be run after
#	constraints are initialized, because some constraints can be
#	overridden.
#
# Arguments:
#	none
#
# Results:
#	::tcltest::verbose is set to <value>

proc ::tcltest::processCmdLineArgs {} {
    global argv

    # The "argv" var doesn't exist in some cases, so use {}
    # The "argv" var doesn't exist in some cases.

    if {(![info exists argv]) || ([llength $argv] < 2)} {
	set flagArray {}
    } else {
	set flagArray $argv
    }

    if {[catch {array set flag $flagArray}]} {
	puts stderr "Error:  odd number of command line args specified:"
	puts stderr "        $argv"
	exit
    }
    
    # Allow for 1-char abbreviations, where applicable (e.g., -match == -m).
    # Note that -verbose cannot be abbreviated to -v in wish because it
    # conflicts with the wish option -visual.

    foreach arg {-verbose -match -skip -constraints} {
	set abbrev [string range $arg 0 1]
	if {([info exists flag($abbrev)]) && \
		([lsearch -exact $flagArray $arg] < \
		[lsearch -exact $flagArray $abbrev])} {
	    set flag($arg) $flag($abbrev)
	}
    }

    # Set ::tcltest::workingDir to [pwd].
    # Save the names of files that already exist in ::tcltest::workingDir.

    set ::tcltest::workingDir [pwd]
    foreach file [glob -nocomplain [file join $::tcltest::workingDir *]] {
	lappend ::tcltest::filesExisted [file tail $file]
    }

    # Set ::tcltest::verbose to the arg of the -verbose flag, if given

    if {[info exists flag(-verbose)]} {
	set ::tcltest::verbose $flag(-verbose)
    }

    # Set ::tcltest::match to the arg of the -match flag, if given

    if {[info exists flag(-match)]} {
	set ::tcltest::match $flag(-match)
    }

    # Set ::tcltest::skip to the arg of the -skip flag, if given

    if {[info exists flag(-skip)]} {
	set ::tcltest::skip $flag(-skip)
    }

    # Use the -constraints flag, if given, to turn on constraints that are
    # turned off by default: userInteractive knownBug nonPortable.  This
    # code fragment must be run after constraints are initialized.

    if {[info exists flag(-constraints)]} {
	foreach elt $flag(-constraints) {
	    set ::tcltest::testConfig($elt) 1
	}
    }
}

::tcltest::processCmdLineArgs


# ::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.
#

proc ::tcltest::cleanupTests {{calledFromAllFile 0}} {
    set tail [file tail [info script]]

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

    if {!$calledFromAllFile} {

	foreach file $::tcltest::filesMade {
	    if {[file exists $file]} {
		catch {file delete -force $file}
	    }
	}
	set currentFiles {}
	foreach file [glob -nocomplain [file join $::tcltest::workingDir *]] {
	    lappend currentFiles [file tail $file]
	}
	set newFiles {}
	foreach file $currentFiles {
	    if {[lsearch -exact $::tcltest::filesExisted $file] == -1} {
		lappend newFiles $file
	    }
	}
	set ::tcltest::filesExisted $currentFiles
	if {[llength $newFiles] > 0} {
	    set ::tcltest::createdNewFiles($tail) $newFiles
	}
    }

    if {$calledFromAllFile || $::tcltest::testSingleFile} {

	# print stats

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

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

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

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

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

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

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

	# reset filesMade, filesExisted, and numTests

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

	# exit only if running Tk in non-interactive mode

	global tk_version tcl_interactive
	if {[info exists tk_version] && !$tcl_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

	incr ::tcltest::numTestFiles
	if {($::tcltest::currentFailure) && \
		([lsearch -exact $::tcltest::failFiles $tail] == -1)} {
	    lappend ::tcltest::failFiles $tail
	}
	set ::tcltest::currentFailure false
    }
}


# test --
#
# This procedure runs a test and prints an error message if the test fails.
# If ::tcltest::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
# ::tcltest::match variable, if it matches an element in
# ::tcltest::skip, or if one of the elements of "constraints" turns
# out not to be true.
#
# 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.
# constraints -		A list of one or more keywords, each of
#			which must be the name of an element in
#			the array "::tcltest::testConfig".  If any of these
#			elements is zero, the test is skipped.
#			This argument may be omitted.
# script -		Script to run to carry out the test.  It must
#			return a result that can be checked for
#			correctness.
# expectedAnswer -	Expected result from script.

proc ::tcltest::test {name description script expectedAnswer args} {
    incr ::tcltest::numTests(Total)

    # skip the test if it's name matches an element of skip

    foreach pattern $::tcltest::skip {
	if {[string match $pattern $name]} {
	    incr ::tcltest::numTests(Skipped)
	    return
	}
    }
    # skip the test if it's name doesn't match any element of match

    if {[llength $::tcltest::match] > 0} {
	set ok 0
	foreach pattern $::tcltest::match {
	    if {[string match $pattern $name]} {
		set ok 1
		break
	    }
        }
	if {!$ok} {
	    incr ::tcltest::numTests(Skipped)
	    return
	}
    }
    set i [llength $args]
    if {$i == 0} {
	set constraints {}
    } elseif {$i == 1} {

	# "constraints" argument exists;  shuffle arguments down, then
	# make sure that the constraints are satisfied.

	set constraints $script
	set script $expectedAnswer
	set expectedAnswer [lindex $args 0]
	set doTest 0
	if {[string match {*[$\[]*} $constraints] != 0} {

	    # full expression, e.g. {$foo > [info tclversion]}

	    catch {set doTest [uplevel #0 expr $constraints]}

	} elseif {[regexp {[^.a-zA-Z0-9 ]+} $constraints] != 0} {

	    # something like {a || b} should be turned into 
	    # $::tcltest::testConfig(a) || $::tcltest::testConfig(b).

 	    regsub -all {[.a-zA-Z0-9]+} $constraints \
		    {$::tcltest::testConfig(&)} c
	    catch {set doTest [eval expr $c]}
	} else {

	    # just simple constraints such as {unixOnly fonts}.

	    set doTest 1
	    foreach constraint $constraints {
		if {![info exists ::tcltest::testConfig($constraint)]
			|| !$::tcltest::testConfig($constraint)} {
		    set doTest 0

		    # store the constraint that kept the test from running

		    set constraints $constraint
		    break
		}
	    }
	}
	if {$doTest == 0} {
	    incr ::tcltest::numTests(Skipped)
	    if {[string first s $::tcltest::verbose] != -1} {
		puts stdout "++++ $name SKIPPED: $constraints"
	    }

	    # add the constraint to the list of constraints the kept tests
	    # from running

	    if {[info exists ::tcltest::skippedBecause($constraints)]} {
		incr ::tcltest::skippedBecause($constraints)
	    } else {
		set ::tcltest::skippedBecause($constraints) 1
	    }
	    return	
	}
    } else {
	error "wrong # args: must be \"test name description ?constraints? script expectedAnswer\""
    }
    memory tag $name
    set code [catch {uplevel $script} actualAnswer]
    if {$code != 0 || [string compare $actualAnswer $expectedAnswer] != 0} {
	incr ::tcltest::numTests(Failed)
	set ::tcltest::currentFailure true
	if {[string first b $::tcltest::verbose] == -1} {
	    set script ""
	}
	puts stdout "\n==== $name $description FAILED"
	if {$script != ""} {
	    puts stdout "==== Contents of test case:"
	    puts stdout $script
	}
	if {$code != 0} {
	    if {$code == 1} {
		puts stdout "==== Test generated error:"
		puts stdout $actualAnswer
	    } elseif {$code == 2} {
		puts stdout "==== Test generated return exception;  result was:"
		puts stdout $actualAnswer
	    } elseif {$code == 3} {
		puts stdout "==== Test generated break exception"
	    } elseif {$code == 4} {
		puts stdout "==== Test generated continue exception"
	    } else {
		puts stdout "==== Test generated exception $code;  message was:"
		puts stdout $actualAnswer
	    }
	} else {
	    puts stdout "---- Result was:\n$actualAnswer"
	}
	puts stdout "---- Result should have been:\n$expectedAnswer"
	puts stdout "==== $name FAILED\n" 
    } else { 
	incr ::tcltest::numTests(Passed)
	if {[string first p $::tcltest::verbose] != -1} {
	    puts stdout "++++ $name PASSED"
	}
    }
}

# ::tcltest::dotests --
#
#	takes two arguments--the name of the test file (such
#	as "parse.test"), and a pattern selecting the tests you want to
#	execute.  It sets ::tcltest::matching to the second argument, calls
#	"source" on the file specified in the first argument, and restores
#	::tcltest::matching to its pre-call value at the end.
#
# Arguments:
#	file    name of tests file to source
#	args    pattern selecting the tests you want to execute
#
# Results:
#	none

proc ::tcltest::dotests {file args} {
    set savedTests $::tcltest::match
    set ::tcltest::match $args
    source $file
    set ::tcltest::match $savedTests
}

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

proc ::tcltest::leakfiles {old} {
    if {[catch {testchannel open} new]} {
        return {}
    }
    set leak {}
    foreach p $new {
    	if {[lsearch $old $p] < 0} {
	    lappend leak $p
	}
    }
    return $leak
}

set ::tcltest::saveState {}

proc ::tcltest::saveState {} {
    uplevel #0 {set ::tcltest::saveState [list [info procs] [info vars]]}
}

proc ::tcltest::restoreState {} {
    foreach p [info procs] {
	if {[lsearch [lindex $::tcltest::saveState 0] $p] < 0} {
	    rename $p {}
	}
    }
    foreach p [uplevel #0 {info vars}] {
	if {[lsearch [lindex $::tcltest::saveState 1] $p] < 0} {
	    uplevel #0 "unset $p"
	}
    }
}

proc ::tcltest::normalizeMsg {msg} {
    regsub "\n$" [string tolower $msg] "" msg
    regsub -all "\n\n" $msg "\n" msg
    regsub -all "\n\}" $msg "\}" msg
    return $msg
}

# 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.
#
proc ::tcltest::makeFile {contents name} {
    set fd [open $name w]
    fconfigure $fd -translation lf
    if {[string index $contents [expr {[string length $contents] - 1}]] == "\n"} {
	puts -nonewline $fd $contents
    } else {
	puts $fd $contents
    }
    close $fd

    set fullName [file join [pwd] $name]
    if {[lsearch -exact $::tcltest::filesMade $fullName] == -1} {
	lappend ::tcltest::filesMade $fullName
    }
}

proc ::tcltest::removeFile {name} {
    file delete $name
}

# 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.
#
proc ::tcltest::makeDirectory {name} {
    file mkdir $name

    set fullName [file join [pwd] $name]
    if {[lsearch -exact $::tcltest::filesMade $fullName] == -1} {
	lappend ::tcltest::filesMade $fullName
    }
}

proc ::tcltest::removeDirectory {name} {
    file delete -force $name
}

proc ::tcltest::viewFile {name} {
    global tcl_platform
    if {($tcl_platform(platform) == "macintosh") || \
		($::tcltest::testConfig(unixExecs) == 0)} {
	set f [open $name]
	set data [read -nonewline $f]
	close $f
	return $data
    } else {
	exec cat $name
    }
}

#
# 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.

proc ::tcltest::bytestring {string} {
    encoding convertfrom identity $string
}

# Locate tcltest executable

if {![info exists tk_version]} {
    set tcltest [info nameofexecutable]

    if {$tcltest == "{}"} {
	set tcltest {}
    }
}

set ::tcltest::testConfig(stdio) 0
catch {
    catch {file delete -force tmp}
    set f [open tmp w]
    puts $f {
	exit
    }
    close $f

    set f [open "|[list $tcltest tmp]" r]
    close $f
    
    set ::tcltest::testConfig(stdio) 1
}
catch {file delete -force tmp}

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

catch {socket} msg
set ::tcltest::testConfig(socket) \
	[expr {$msg != "sockets are not available on this system"}]

#
# Internationalization / ISO support procs     -- dl
#

if {[info commands testlocale]==""} {

    # No testlocale command, no tests...
    # (it could be that we are a sub interp and we could just load
    # the Tcltest package but that would interfere with tests
    # that tests packages/loading in slaves...)

    set ::tcltest::testConfig(hasIsoLocale) 0
} else {
    proc ::tcltest::set_iso8859_1_locale {} {
	set ::tcltest::previousLocale [testlocale ctype]
	testlocale ctype $::tcltest::isoLocale
    }

    proc ::tcltest::restore_locale {} {
	testlocale ctype $::tcltest::previousLocale
    }

    if {![info exists ::tcltest::isoLocale]} {
	set ::tcltest::isoLocale fr
        switch $tcl_platform(platform) {
	    "unix" {

		# Try some 'known' values for some platforms:

		switch -exact -- $tcl_platform(os) {
		    "FreeBSD" {
			set ::tcltest::isoLocale fr_FR.ISO_8859-1
		    }
		    HP-UX {
			set ::tcltest::isoLocale fr_FR.iso88591
		    }
		    Linux -
		    IRIX {
			set ::tcltest::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 ::tcltest::isoLocale iso_8859_1
		    }
		}
	    }
	    "windows" {
		set ::tcltest::isoLocale French
	    }
	}
    }

    set ::tcltest::testConfig(hasIsoLocale) \
	    [string length [::tcltest::set_iso8859_1_locale]]
    ::tcltest::restore_locale
} 

#
# procedures that are Tk specific
#

if {[info exists tk_version]} {

    # If the main window isn't already mapped (e.g. because the tests are
    # being run automatically) , specify a precise size for it so that the
    # user won't have to position it manually.

    if {![winfo ismapped .]} {
	wm geometry . +0+0
	update
    }

    # The following code can be used to perform tests involving a second
    # process running in the background.
    
    # Locate the tktest executable

    set ::tcltest::tktest [info nameofexecutable]
    if {$::tcltest::tktest == "{}"} {
	set ::tcltest::tktest {}
	puts stdout \
		"Unable to find tktest executable, skipping multiple process tests."
    }

    # Create background process
    
    proc ::tcltest::setupbg args {
	if {$::tcltest::tktest == ""} {
	    error "you're not running tktest so setupbg should not have been called"
	}
	if {[info exists ::tcltest::fd] && ($::tcltest::fd != "")} {
	    cleanupbg
	}
	
	# The following code segment cannot be run on Windows prior
	# to Tk 8.1b3 due to a channel I/O bug.

	global tcl_platform
	set ::tcltest::fd [open "|[list $::tcltest::tktest -geometry +0+0 -name tktest] $args" r+]
	puts $::tcltest::fd "puts foo; flush stdout"
	flush $::tcltest::fd
	if {[gets $::tcltest::fd data] < 0} {
	    error "unexpected EOF from \"$::tcltest::tktest\""
	}
	if {[string compare $data foo]} {
	    error "unexpected output from background process \"$data\""
	}
	fileevent $::tcltest::fd readable bgReady
    }
    
    # Send a command to the background process, catching errors and
    # flushing I/O channels

    proc ::tcltest::dobg {command} {
	puts $::tcltest::fd "catch [list $command] msg; update; puts \$msg; puts **DONE**; flush stdout"
	flush $::tcltest::fd
	set ::tcltest::bgDone 0
	set ::tcltest::bgData {}
	tkwait variable ::tcltest::bgDone
	set ::tcltest::bgData
    }

    # Data arrived from background process.  Check for special marker
    # indicating end of data for this command, and make data available
    # to dobg procedure.

    proc ::tcltest::bgReady {} {
	set x [gets $::tcltest::fd]
	if {[eof $::tcltest::fd]} {
	    fileevent $::tcltest::fd readable {}
	    set ::tcltest::bgDone 1
	} elseif {$x == "**DONE**"} {
	    set ::tcltest::bgDone 1
	} else {
	    append ::tcltest::bgData $x
	}
    }

    # Exit the background process, and close the pipes

    proc ::tcltest::cleanupbg {} {
	catch {
	    puts $::tcltest::fd "exit"
	    close $::tcltest::fd
	}
	set ::tcltest::fd ""
    }

    # Clean up focus after using generate event, which
    # can leave the window manager with the wrong impression
    # about who thinks they have the focus. (BW)
    
    proc ::tcltest::fixfocus {} {
	catch {destroy .focus}
	toplevel .focus
	wm geometry .focus +0+0
	entry .focus.e
	.focus.e insert 0 "fixfocus"
	pack .focus.e
	update
	focus -force .focus.e
	destroy .focus
    }
}

# 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.

if {[info commands testthread] != {}} {
    proc ::tcltest::threadReap {} {
	testthread errorproc ThreadNullError
	while {[llength [testthread names]] > 1} {
	    foreach tid [testthread names] {
		if {$tid != $::tcltest::mainThread} {
		    catch {testthread send -async $tid {testthread exit}}
		    update
		}
	    }
	}
	testthread errorproc ThreadError
	return [llength [testthread names]]
    }
} else {
    proc ::tcltest::threadReap {} {
	return 1
    }   
}

# Need to catch the import because it fails if defs.tcl is sourced
# more than once.

catch {namespace import ::tcltest::*}
return