summaryrefslogtreecommitdiffstats
path: root/c++/test/tattr.cpp
blob: 2290fff9e1556924cb914721c50294b0065bd9be (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*****************************************************************************
   FILE
   tattr.cpp - HDF5 C++ testing the functionalities associated with the
        C attribute interface (H5A)

 ***************************************************************************/
#ifdef OLD_HEADER_FILENAME
#include <iostream.h>
#else
#include <iostream>
#endif
using std::cerr;
using std::endl;

#include <string>
#include "H5Cpp.h" // C++ API header file
using namespace H5;

#include "h5test.h"
#include "h5cpputil.h" // C++ utilility header file

const H5std_string FILE_BASIC("tattr_basic.h5");
const H5std_string FILE_COMPOUND("tattr_compound.h5");
const H5std_string FILE_SCALAR("tattr_scalar.h5");
const H5std_string FILE_MULTI("tattr_multi.h5");
const H5std_string FILE_DTYPE("tattr_dtype.h5");
const H5std_string ATTR_TMP_NAME("temp_attr_name");
const H5std_string FATTR_TMP_NAME("temp_fattr_name");
const size_t       ATTR_MAX_DIMS = 7;

/* 3-D dataset with fixed dimensions */
const int     SPACE1_RANK = 3;
const hsize_t SPACE1_DIM1 = 3;
const hsize_t SPACE1_DIM2 = 15;
const hsize_t SPACE1_DIM3 = 13;

/* Object names */
const H5std_string DSET1_NAME("Dataset1");
const H5std_string GROUP1_NAME("/Group1");
const H5std_string TYPE1_NAME("/Type");

/* Attribute Rank & Dimensions */
const H5std_string ATTR1_NAME("Attr1");
const int          ATTR1_RANK             = 1;
const hsize_t      ATTR1_DIM1             = 3;
int                attr_data1[ATTR1_DIM1] = {512, -234, 98123}; /* Test data for 1st attribute */

// File attribute, using the same rank and dimensions as ATTR1_NAME's
const H5std_string FATTR1_NAME("File Attr1");
const H5std_string FATTR2_NAME("File Attr2");

const H5std_string ATTR2_NAME("Attr2");
const int          ATTR2_RANK          = 2;
const hsize_t      ATTR2_DIM1          = 2;
const hsize_t      ATTR2_DIM2          = 2;
int attr_data2[ATTR2_DIM1][ATTR2_DIM2] = {{7614, -416}, {197814, -3}}; /* Test data for 2nd attribute */

const H5std_string ATTR3_NAME("Attr3");
const int          ATTR3_RANK                                     = 3;
const hsize_t      ATTR3_DIM1                                     = 2;
const hsize_t      ATTR3_DIM2                                     = 2;
const hsize_t      ATTR3_DIM3                                     = 2;
double             attr_data3[ATTR3_DIM1][ATTR3_DIM2][ATTR3_DIM3] = {
    {{2.3, -26.1}, {0.123, -10.0}}, {{981724.2, -0.91827}, {2.0, 23.0}}}; /* Test data for 3rd attribute */

const H5std_string ATTR4_NAME("Attr4");
const int          ATTR4_RANK = 2;
const hsize_t      ATTR4_DIM1 = 2;
const hsize_t      ATTR4_DIM2 = 2;

const H5std_string ATTR4_FIELDNAME1("i");
const H5std_string ATTR4_FIELDNAME2("d");
const H5std_string ATTR4_FIELDNAME3("c");
size_t             attr4_field1_off = 0;
size_t             attr4_field2_off = 0;
size_t             attr4_field3_off = 0;
struct attr4_struct {
    int    i;
    double d;
    char   c;
} attr_data4[ATTR4_DIM1][ATTR4_DIM2] = {
    {{3, -26.1, 'd'}, {-100000, 0.123, '3'}},
    {{-23, 981724.2, 'Q'}, {0, 2.0, '\n'}}}; // Test data for 4th attribute

const H5std_string ATTR5_NAME("Attr5");
const int          ATTR5_RANK = 0;
float              attr_data5 = (float)-5.123; // Test data for 5th attribute

/* Info for another attribute */
const H5std_string ATTR1A_NAME("Attr1_a");
int                attr_data1a[ATTR1_DIM1] = {256, 11945, -22107};

/*-------------------------------------------------------------------------
 * Function:    test_attr_basic_write
 *
 * Purpose      Test basic write attribute on both datasets and groups.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_basic_write()
{
    hsize_t dims1[]                = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
    hsize_t dims2[]                = {ATTR1_DIM1};
    hsize_t dims3[]                = {ATTR2_DIM1, ATTR2_DIM2};
    int     read_data1[ATTR1_DIM1] = {0}; // Buffer for reading 1st attribute
    hsize_t i;

    // Output message about test being performed
    SUBTEST("Basic Attribute Writing Functions");

    try {
        // Create file
        H5File fid1(FILE_BASIC, H5F_ACC_TRUNC);

        // Create dataspace for dataset
        DataSpace ds_space(SPACE1_RANK, dims1);

        /*
         *                Test attribute with dataset
         */

        // Create a dataset
        DataSet dataset = fid1.createDataSet(DSET1_NAME, PredType::NATIVE_UCHAR, ds_space);

        // Create dataspace for attribute
        DataSpace att_space(ATTR1_RANK, dims2);

        // Create a file attribute
        Attribute file_attr2 = fid1.createAttribute(FATTR1_NAME, PredType::NATIVE_INT, att_space);

        // Create a file attribute
        Attribute file_attr1 = fid1.createAttribute(FATTR2_NAME, PredType::NATIVE_INT, att_space);

        // Create an attribute for the dataset
        Attribute ds_attr1 = dataset.createAttribute(ATTR1_NAME, PredType::NATIVE_INT, att_space);

        // Try creating an attribute that already exists.  This should fail
        // since two attributes cannot have the same name.  If an exception
        // is not thrown for this action by createAttribute, then throw an
        // invalid action exception.
        try {
            Attribute invalid_attr = dataset.createAttribute(ATTR1_NAME, PredType::NATIVE_INT, att_space);

            // continuation here, that means no exception has been thrown
            throw InvalidActionException("H5File::createDataSet",
                                         "Library allowed overwrite of existing dataset");
        }
        catch (AttributeIException &E) // catching invalid creating attribute
        {
        } // do nothing, exception expected

        // Write attribute information
        ds_attr1.write(PredType::NATIVE_INT, attr_data1);

        // Read attribute information immediately, without closing attribute
        ds_attr1.read(PredType::NATIVE_INT, read_data1);

        // Verify values read in
        for (i = 0; i < ATTR1_DIM1; i++)
            if (attr_data1[i] != read_data1[i])
                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d,read_data1[%d]=%d\n", __LINE__,
                              i, attr_data1[i], i, read_data1[i]);

        // Create two more attributes for this dataset, but only write to one.
        Attribute ds_attr2 = dataset.createAttribute(ATTR2_NAME, PredType::NATIVE_INT, att_space);
        Attribute ds_attr3 = dataset.createAttribute(ATTR3_NAME, PredType::NATIVE_INT, att_space);

        // Write attribute information
        ds_attr2.write(PredType::NATIVE_INT, attr_data1a);

        // Read attribute information immediately, without closing attribute
        ds_attr2.read(PredType::NATIVE_INT, read_data1);

        // Verify values read in
        for (i = 0; i < ATTR1_DIM1; i++)
            if (attr_data1a[i] != read_data1[i])
                TestErrPrintf("%d: attribute data different: attr_data1a[%d]=%d,read_data1[%d]=%d\n",
                              __LINE__, i, attr_data1a[i], i, read_data1[i]);

        // Close both attributes
        ds_attr1.close();
        ds_attr2.close();
        ds_attr3.close();

        /*
         *                Test attribute with group
         */

        // Create group in file fid1
        Group group = fid1.createGroup(GROUP1_NAME);

        // Create dataspace for attribute
        DataSpace sid3(ATTR2_RANK, dims3);

        // Create an attribute for the group
        Attribute gr_attr = group.createAttribute(ATTR2_NAME, PredType::NATIVE_INT, sid3);

        // Check storage size for attribute
        hsize_t attr_size = gr_attr.getStorageSize();
        verify_val((long)attr_size, (long)(ATTR2_DIM1 * ATTR2_DIM2 * sizeof(int)),
                   "Attribute::getStorageSize", __LINE__, __FILE__);

        // Try to create the same attribute again (should fail)
        try {
            Attribute invalid_attr = group.createAttribute(ATTR2_NAME, PredType::NATIVE_INT, sid3);
            // continuation here, that means no exception has been thrown
            throw InvalidActionException("H5Group::createAttribute",
                                         "Attempting to create an existing attribute");
        }
        catch (AttributeIException &E) // catching invalid creating attribute
        {
        } // do nothing, exception expected

        // Write attribute information
        gr_attr.write(PredType::NATIVE_INT, attr_data2);

        // Check storage size for attribute
        attr_size = gr_attr.getStorageSize();
        verify_val((long)attr_size, (long)(ATTR2_DIM1 * ATTR2_DIM2 * sizeof(int)),
                   "Attribute::getStorageSize", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_basic_write()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_basic_write()

/*-------------------------------------------------------------------------
 * Function:    test_attr_getname
 *
 * Purpose      Test getting attribute name.
 *
 * Description
 *  Test these functions:
 *  A. ssize_t Attribute::getName(char* attr_name, size_t buf_size)
 *    1. With arbitrary buf_size that is larger than the name size
 *    2. With arbitrary buf_size that is smaller than the name's length.
 *    3. With a buf_size that equals the name's length.
 *
 *  B. ssize_t Attribute::getName(H5std_string& attr_name, size_t buf_size)
 *    1. With buffer smaller than the actual name
 *    2. Same test but with retiring overloaded function
 *        ssize_t Attribute::getName(size_t buf_size, H5std_string& attr_name)
 *
 *  C. H5std_string Attribute::getName()
 *
 *  D. H5std_string Attribute::getName(size_t len)
 *
 *  E. ssize_t Attribute::getName(H5std_string& attr_name, size_t buf_size)
 *        With buffer size equals the name's length, i.e., buf_size=0
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_getname()
{
    // Output message about test being performed
    SUBTEST("Testing all overloads of Attribute::getName");

    try {
        //
        // Open the file FILE_BASIC and test getName with its attribute
        //

        // Open file
        H5File fid1(FILE_BASIC, H5F_ACC_RDWR);

        // Check for existence of attribute FATTR1_NAME
        bool attr_exists = fid1.attrExists(FATTR1_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists", "Attribute should exist but does not");

        // Open attribute
        Attribute fattr1(fid1.openAttribute(FATTR1_NAME));

        // A. Get attribute name with
        // ssize_t Attribute::getName(char* attr_name, size_t buf_size)
        // using different buffer sizes and verify against FATTR1_NAME (3 cases)

        // 1. With arbitrary buf_size that is larger than the name size
        size_t buf_size    = FATTR1_NAME.length() + 10;
        char * fattr1_name = new char[buf_size + 1];
        HDmemset(fattr1_name, 0, buf_size + 1);
        ssize_t name_size = 0; // actual length of attribute name
        name_size         = fattr1.getName(fattr1_name, buf_size + 1);
        CHECK(name_size, FAIL, "Attribute::getName", __LINE__, __FILE__);
        verify_val((size_t)name_size, FATTR1_NAME.length(), "Attribute::getName", __LINE__, __FILE__);
        verify_val((const char *)fattr1_name, FATTR1_NAME, "Attribute::getName", __LINE__, __FILE__);
        delete[] fattr1_name;

        // 2. With arbitrary buf_size that is smaller than the name's length.
        // Let's try 4 first characters in the name.
        buf_size           = 4;
        char short_name[5] = "File"; // to verify the read name
        fattr1_name        = new char[buf_size + 1];
        HDmemset(fattr1_name, 0, buf_size + 1);
        name_size = fattr1.getName(fattr1_name, buf_size + 1);
        CHECK(name_size, FAIL, "Attribute::getName", __LINE__, __FILE__);
        verify_val((size_t)name_size, FATTR1_NAME.size(), "Attribute::getName", __LINE__, __FILE__);
        verify_val((const char *)fattr1_name, (const char *)short_name, "Attribute::getName", __LINE__,
                   __FILE__);
        delete[] fattr1_name;

        // 3. With a buf_size that equals the name's length.
        buf_size    = FATTR1_NAME.length();
        fattr1_name = new char[buf_size + 1];
        HDmemset(fattr1_name, 0, buf_size + 1);
        name_size = fattr1.getName(fattr1_name, buf_size + 1);
        CHECK(name_size, FAIL, "Attribute::getName", __LINE__, __FILE__);
        verify_val(fattr1_name, FATTR1_NAME, "Attribute::getName", __LINE__, __FILE__);
        delete[] fattr1_name;

        // B. Get attribute name with
        // ssize_t Attribute::getName(H5std_string& attr_name, size_t buf_size)
        // using buffer smaller than the actual name
        buf_size = 4;
        H5std_string fattr1_name2;
        name_size = fattr1.getName(fattr1_name2, buf_size);
        verify_val(fattr1_name2, "File", "Attribute::getName", __LINE__, __FILE__);

        // Same test as above, but with deprecated overloaded function
        // ssize_t Attribute::getName(size_t buf_size, H5std_string& attr_name)
        // using buffer smaller than the actual name
        H5std_string fattr1_name2a;
        name_size = fattr1.getName(fattr1_name2a, buf_size);
        verify_val(fattr1_name2a, "File", "Attribute::getName", __LINE__, __FILE__);

        // C. Get file attribute's name with
        // H5std_string Attribute::getName()
        H5std_string fattr1_name3 = fattr1.getName();
        verify_val(fattr1_name3, FATTR1_NAME, "Attribute::getName", __LINE__, __FILE__);

        //
        // D. Test getName getting part of an attribute's name using
        // H5std_string Attribute::getName(len)
        //

        // Open dataset DSET1_NAME
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Check for existence of attribute
        attr_exists = dataset.attrExists(ATTR1_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists", "Attribute should exist but does not");

        // Open attribute
        Attribute attr1(dataset.openAttribute(ATTR1_NAME));

        size_t       len         = 4;
        H5std_string dattr_name1 = attr1.getName(len);
        verify_val(dattr_name1, "Attr", "Attribute::getName", __LINE__, __FILE__);

        // E. Get dataset's attribute name with
        // H5std_string Attribute::getName(H5std_string attr_name, buf_size=0)
        H5std_string dattr_name2;
        name_size = attr1.getName(dattr_name2);
        verify_val(dattr_name2, ATTR1_NAME, "Attribute::getName", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_getname()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_getname()

/*-------------------------------------------------------------------------
 * Function:    test_attr_rename
 *
 * Purpose      Test renaming attribute function.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_rename()
{
    int     read_data1[ATTR1_DIM1] = {0}; // Buffer for reading the attribute
    hsize_t i;

    // Output message about test being performed
    SUBTEST("Checking for Existence and Renaming Attribute");

    try {
        // Open file
        H5File fid1(FILE_BASIC, H5F_ACC_RDWR);

        // Check and rename attribute belonging to a file

        // Check for existence of attribute
        bool attr_exists = fid1.attrExists(FATTR1_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists", "Attribute should exist but does not");

        // Change attribute name
        fid1.renameAttr(FATTR1_NAME, FATTR_TMP_NAME);

        // Open attribute again
        Attribute fattr1(fid1.openAttribute(FATTR_TMP_NAME));

        // Verify new attribute name
        H5std_string fattr_name = fattr1.getName();
        verify_val(fattr_name, FATTR_TMP_NAME, "Attribute::getName", __LINE__, __FILE__);

        int num_attrs = fid1.getNumAttrs();
        verify_val(num_attrs, 2, "Attribute::getNumAttrs", __LINE__, __FILE__);

        // Change first file attribute back to the original name
        fid1.renameAttr(FATTR_TMP_NAME, FATTR1_NAME);

        // Open the dataset
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Check and rename attribute belonging to a dataset

        // Check for existence of attribute
        attr_exists = dataset.attrExists(ATTR1_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists", "Attribute should exist but does not");

        // Change attribute name
        dataset.renameAttr(ATTR1_NAME, ATTR_TMP_NAME);

        // Open attribute again
        Attribute attr1(dataset.openAttribute(ATTR_TMP_NAME));

        // Verify new attribute name
        H5std_string attr_name = attr1.getName();
        verify_val(attr_name, ATTR_TMP_NAME, "Attribute::getName", __LINE__, __FILE__);

        // Read attribute information immediately, without closing attribute
        attr1.read(PredType::NATIVE_INT, read_data1);

        // Verify values read in
        for (i = 0; i < ATTR1_DIM1; i++)
            if (attr_data1[i] != read_data1[i])
                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d,read_data1[%d]=%d\n", __LINE__,
                              i, attr_data1[i], i, read_data1[i]);

        // Close attribute
        attr1.close();

        // Check for existence of second attribute
        attr_exists = dataset.attrExists(ATTR2_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists", "Attribute should exist but does not");

        // Open the second attribute
        Attribute attr2(dataset.openAttribute(ATTR2_NAME));

        // Verify second attribute name
        H5std_string attr2_name = attr2.getName();
        verify_val(attr2_name, ATTR2_NAME, "Attribute::getName", __LINE__, __FILE__);

        // Read attribute information immediately, without closing attribute
        attr2.read(PredType::NATIVE_INT, read_data1);

        // Verify values read in
        for (i = 0; i < ATTR1_DIM1; i++)
            if (attr_data1a[i] != read_data1[i])
                TestErrPrintf("%d: attribute data different: attr_data1a[%d]=%d,read_data1[%d]=%d\n",
                              __LINE__, i, attr_data1a[i], i, read_data1[i]);

        // Close attribute
        attr2.close();

        // Change first attribute back to the original name
        dataset.renameAttr(ATTR_TMP_NAME, ATTR1_NAME);

        // Check for existence of attribute after renaming
        attr_exists = dataset.attrExists(ATTR1_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists", "Attribute should exist but does not");

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_rename()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_rename()

/*-------------------------------------------------------------------------
 * Function:    test_attr_basic_read
 *
 * Purpose      Test basic read attribute.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_basic_read()
{
    hsize_t i, j;

    // Output message about test being performed
    SUBTEST("Basic Attribute Reading Functions");

    try {
        // Open file
        H5File fid1(FILE_BASIC, H5F_ACC_RDWR);

        // Open the dataset
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Verify the correct number of attributes
        int num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 3, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Verify the correct number of attributes another way
        H5O_info2_t oinfo;
        HDmemset(&oinfo, 0, sizeof(oinfo));
        dataset.getObjinfo(oinfo, H5O_INFO_NUM_ATTRS);
        verify_val(oinfo.num_attrs, 3, "DataSet::getObjinfo", __LINE__, __FILE__);

        // Open an attribute for the dataset
        Attribute ds_attr = dataset.openAttribute(ATTR1_NAME);

        // Read attribute information
        int read_data1[ATTR1_DIM1] = {0}; // Buffer for reading 1st attribute
        ds_attr.read(PredType::NATIVE_INT, &read_data1);

        // Verify values read in
        for (i = 0; i < ATTR1_DIM1; i++)
            if (attr_data1[i] != read_data1[i])
                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d, read_data1[%d]=%d\n",
                              __LINE__, i, attr_data1[i], i, read_data1[i]);

        /*
         *                Test attribute with group
         */
        // Open the group
        Group group = fid1.openGroup(GROUP1_NAME);

        // Verify the correct number of attributes
        num_attrs = group.getNumAttrs();
        verify_val(num_attrs, 1, "Group::getNumAttrs", __LINE__, __FILE__);

        // Verify the correct number of attributes another way
        HDmemset(&oinfo, 0, sizeof(oinfo));
        group.getObjinfo(oinfo, H5O_INFO_NUM_ATTRS);
        verify_val(oinfo.num_attrs, 1, "Group::getObjinfo", __LINE__, __FILE__);

        // Open an attribute for the group
        Attribute gr_attr = group.openAttribute(ATTR2_NAME);

        // Buffer for reading 2nd attribute
        int read_data2[ATTR2_DIM1][ATTR2_DIM2] = {{0}};

        // Read attribute information
        gr_attr.read(PredType::NATIVE_INT, read_data2);

        // Verify values read in
        for (i = 0; i < ATTR2_DIM1; i++)
            for (j = 0; j < ATTR2_DIM2; j++)
                if (attr_data2[i][j] != read_data2[i][j]) {
                    TestErrPrintf(
                        "%d: attribute data different: attr_data2[%d][%d]=%d, read_data2[%d][%d]=%d\n",
                        __LINE__, i, j, attr_data2[i][j], i, j, read_data2[i][j]);
                }
        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_basic_read()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_basic_read()

/*-------------------------------------------------------------------------
 * Function:    test_attr_compound_write
 *
 * Purpose      Test writing attributes with compound datatype.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_compound_write()
{

    // Output message about test being performed
    SUBTEST("Multiple Attribute Functions");

    try {
        // Create file
        H5File fid1(FILE_COMPOUND.c_str(), H5F_ACC_TRUNC);

        // Create dataspace for dataset
        hsize_t   dims1[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
        DataSpace sid1(SPACE1_RANK, dims1);

        // Create a dataset
        DataSet dataset = fid1.createDataSet(DSET1_NAME, PredType::NATIVE_UCHAR, sid1);

        // Create the attribute datatype.
        CompType comp_type(sizeof(struct attr4_struct));

        attr4_field1_off = HOFFSET(struct attr4_struct, i);
        comp_type.insertMember(ATTR4_FIELDNAME1, attr4_field1_off, PredType::NATIVE_INT);

        attr4_field2_off = HOFFSET(struct attr4_struct, d);
        comp_type.insertMember(ATTR4_FIELDNAME2, attr4_field2_off, PredType::NATIVE_DOUBLE);

        attr4_field3_off = HOFFSET(struct attr4_struct, c);
        comp_type.insertMember(ATTR4_FIELDNAME3, attr4_field3_off, PredType::NATIVE_SCHAR);

        // Create dataspace for 1st attribute
        hsize_t   dims2[] = {ATTR4_DIM1, ATTR4_DIM2};
        DataSpace sid2(ATTR4_RANK, dims2);

        // Create complex attribute for the dataset
        Attribute attr = dataset.createAttribute(ATTR4_NAME, comp_type, sid2);

        // Try to create the same attribute again (should fail)
        try {
            Attribute invalid_attr = dataset.createAttribute(ATTR4_NAME, comp_type, sid2);
        }
        catch (AttributeIException &E) // catching invalid creating attribute
        {
        } // do nothing, exception expected

        // Write complex attribute data
        attr.write(comp_type, attr_data4);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_compound_write()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_compound_write()

/*-------------------------------------------------------------------------
 * Function:    test_attr_compound_read
 *
 * Purpose      Test reading attributes with compound datatype.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_compound_read()
{
    hsize_t             dims[ATTR_MAX_DIMS];                // Attribute dimensions
    size_t              size;                               // Attribute datatype size as stored in file
    size_t              offset;                             // Attribute datatype field offset
    struct attr4_struct read_data4[ATTR4_DIM1][ATTR4_DIM2]; // Buffer for reading 4th attribute

    // Output message about test being performed
    SUBTEST("Basic Attribute Functions");

    try {
        // Open file
        H5File fid1(FILE_COMPOUND, H5F_ACC_RDWR);

        // Open the dataset
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Verify the correct number of attributes
        int num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 1, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Verify the correct number of attributes another way
        H5O_info2_t oinfo;
        HDmemset(&oinfo, 0, sizeof(oinfo));
        dataset.getObjinfo(oinfo, H5O_INFO_NUM_ATTRS);
        verify_val(oinfo.num_attrs, 1, "DataSet::getObjinfo", __LINE__, __FILE__);

        // Open 1st attribute for the dataset
        Attribute attr = dataset.openAttribute((unsigned)0);

        /* Verify Dataspace */

        // Get the dataspace of the attribute
        DataSpace space = attr.getSpace();

        // Get the rank of the dataspace and verify it
        int rank = space.getSimpleExtentNdims();
        verify_val(rank, ATTR4_RANK, "DataSpace::getSimpleExtentNdims", __LINE__, __FILE__);

        // Get the dims of the dataspace and verify them
        int ndims = space.getSimpleExtentDims(dims);
        verify_val(ndims, ATTR4_RANK, "DataSpace::getSimpleExtentDims", __LINE__, __FILE__);
        verify_val((long)dims[0], (long)ATTR4_DIM1, "DataSpace::getSimpleExtentDims", __LINE__, __FILE__);
        verify_val((long)dims[1], (long)ATTR4_DIM2, "DataSpace::getSimpleExtentDims", __LINE__, __FILE__);

        // Get the class of the datatype that is used by attr
        H5T_class_t type_class = attr.getTypeClass();

        // Verify that the type is of compound datatype
        verify_val(type_class, H5T_COMPOUND, "Attribute::getTypeClass", __LINE__, __FILE__);

        // Get the compound datatype
        CompType datatype = attr.getCompType();

        // Verify the number of fields in the datatype, which must be 3
        int fields = datatype.getNmembers();
        verify_val(fields, 3, "CompType::getNmembers", __LINE__, __FILE__);

        // Verify that the fields have the same names as when the type
        // was created
        int j;
        for (j = 0; j < fields; j++) {
            H5std_string fieldname = datatype.getMemberName(j);
            if (!((fieldname == ATTR4_FIELDNAME1) || (fieldname == ATTR4_FIELDNAME2) ||
                  (fieldname == ATTR4_FIELDNAME3)))
                TestErrPrintf("%d:invalid field name for field #%d: %s\n", __LINE__, j, fieldname.c_str());
        } /* end for */

        offset = datatype.getMemberOffset(0);
        verify_val(offset, attr4_field1_off, "DataType::getMemberOffset", __LINE__, __FILE__);

        offset = datatype.getMemberOffset(1);
        verify_val(offset, attr4_field2_off, "DataType::getMemberOffset", __LINE__, __FILE__);

        offset = datatype.getMemberOffset(2);
        verify_val(offset, attr4_field3_off, "DataType::getMemberOffset", __LINE__, __FILE__);

        /* Verify each field's type, class & size */

        // Get and verify the type class of the first member
        type_class = datatype.getMemberClass(0);
        verify_val(type_class, H5T_INTEGER, "DataType::getMemberClass", __LINE__, __FILE__);
        // Get and verify the order of this member's type
        IntType     i_type = datatype.getMemberIntType(0);
        H5T_order_t order  = i_type.getOrder();
        verify_val(order, PredType::NATIVE_INT.getOrder(), "DataType::getOrder", __LINE__, __FILE__);

        // Get and verify the size of this member's type
        size = i_type.getSize();
        verify_val(size, PredType::NATIVE_INT.getSize(), "DataType::getSize", __LINE__, __FILE__);

        // Get and verify class, order, and size of the second member's type
        type_class = datatype.getMemberClass(1);
        verify_val(type_class, H5T_FLOAT, "DataType::getMemberClass", __LINE__, __FILE__);
        FloatType f_type = datatype.getMemberFloatType(1);
        order            = f_type.getOrder();
        verify_val(order, PredType::NATIVE_DOUBLE.getOrder(), "DataType::getOrder", __LINE__, __FILE__);
        size = f_type.getSize();
        verify_val(size, PredType::NATIVE_DOUBLE.getSize(), "DataType::getSize", __LINE__, __FILE__);

        // Get and verify class, order, and size of the third member's type
        type_class = datatype.getMemberClass(2);
        verify_val(type_class, H5T_INTEGER, "DataType::getMemberClass", __LINE__, __FILE__);
        // Note: H5T_INTEGER is correct here!

        StrType s_type = datatype.getMemberStrType(2);
        order          = s_type.getOrder();
        verify_val(order, PredType::NATIVE_SCHAR.getOrder(), "DataType::getOrder", __LINE__, __FILE__);
        size = s_type.getSize();
        verify_val(size, PredType::NATIVE_SCHAR.getSize(), "DataType::getSize", __LINE__, __FILE__);

        // Read attribute information
        attr.read(datatype, read_data4);

        // Verify values read in
        hsize_t ii, jj;
        for (ii = 0; ii < ATTR4_DIM1; ii++)
            for (jj = 0; jj < ATTR4_DIM2; jj++)
                if (HDmemcmp(&attr_data4[ii][jj], &read_data4[ii][jj], sizeof(struct attr4_struct))) {
                    TestErrPrintf(
                        "%d:attribute data different: attr_data4[%d][%d].i=%d, read_data4[%d][%d].i=%d\n",
                        __LINE__, ii, jj, attr_data4[ii][jj].i, ii, jj, read_data4[ii][jj].i);
                    TestErrPrintf(
                        "%d:attribute data different: attr_data4[%d][%d].d=%f, read_data4[%d][%d].d=%f\n",
                        __LINE__, ii, jj, attr_data4[ii][jj].d, ii, jj, read_data4[ii][jj].d);
                    TestErrPrintf(
                        "%d:attribute data different: attr_data4[%d][%d].c=%c, read_data4[%d][%d].c=%c\n",
                        __LINE__, ii, jj, attr_data4[ii][jj].c, ii, jj, read_data4[ii][jj].c);
                } /* end if */

        // Verify name
        H5std_string attr_name = attr.getName();
        verify_val(attr_name, ATTR4_NAME, "Attribute::getName", __LINE__, __FILE__);
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_compound_read()", __LINE__, __FILE__, E.getCDetailMsg());
    }

    try {
        // Now, try truncating the file to make sure reference counting is good.
        // If any references to ids in the previous block are left unterminated,
        // the truncating will fail, because the file will not be closed in
        // the file.close() above.
        H5File file1(FILE_COMPOUND, H5F_ACC_TRUNC);

        PASSED();
    } // end try block

    catch (FileIException &E) {
        issue_fail_msg("test_attr_compound_read()", __LINE__, __FILE__,
                       "Unable to truncate file, possibly because some objects are left opened");
    }
} // test_attr_compound_read()

/*-------------------------------------------------------------------------
 * Function:    test_attr_scalar_write
 *
 * Purpose      Test scalar attribute writing functionality.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_scalar_write()
{
    // Output message about test being performed
    SUBTEST("Basic Scalar Attribute Writing Functions");

    try {
        // Create file
        H5File fid1(FILE_SCALAR, H5F_ACC_TRUNC);

        // Create dataspace for dataset
        hsize_t   dims1[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
        DataSpace sid1(SPACE1_RANK, dims1);

        // Create a dataset
        DataSet dataset = fid1.createDataSet(DSET1_NAME, PredType::NATIVE_UCHAR, sid1);

        // Close dataset's dataspace
        sid1.close();

        // Create dataspace for attribute
        DataSpace att_space(ATTR5_RANK, NULL);

        // Create an attribute for the dataset
        Attribute ds_attr = dataset.createAttribute(ATTR5_NAME, PredType::NATIVE_FLOAT, att_space);

        // Try creating an attribute that already exists.  This should fail
        // since two attributes cannot have the same name.  If an exception
        // is not thrown for this action by createAttribute, then throw an
        // invalid action exception.
        try {
            Attribute invalid_attr = dataset.createAttribute(ATTR5_NAME, PredType::NATIVE_FLOAT, att_space);

            // continuation here, that means no exception has been thrown
            throw InvalidActionException("H5File::createDataSet",
                                         "Library allowed overwrite of existing dataset");
        }
        catch (AttributeIException &E) // catching invalid creating attribute
        {
        } // do nothing, exception expected

        // Write attribute information
        ds_attr.write(PredType::NATIVE_FLOAT, &attr_data5);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_scalar_write()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_scalar_write()

/*-------------------------------------------------------------------------
 * Function:    test_attr_scalar_read
 *
 * Purpose      Test scalar attribute reading functionality.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
/* Epsilon for floating-point comparisons */
#define FP_EPSILON 0.000001F

static void
test_attr_scalar_read()
{
    // Output message about test being performed
    SUBTEST("Basic Scalar Attribute Reading Functions");

    try {
        // Open file
        H5File fid1(FILE_SCALAR, H5F_ACC_RDWR);

        // Open the dataset
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Verify the correct number of attributes
        int num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 1, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Open an attribute for the dataset
        Attribute ds_attr = dataset.openAttribute(ATTR5_NAME);

        // Read attribute information
        float read_data2 = 0.0; // Buffer for reading 1st attribute
        ds_attr.read(PredType::NATIVE_FLOAT, &read_data2);
        if (HDfabs(read_data2 - attr_data5) > FP_EPSILON)
            verify_val(read_data2, attr_data5, FP_EPSILON, "Attribute::read", __LINE__, __FILE__);

        // Get the dataspace of the attribute
        DataSpace att_space = ds_attr.getSpace();

        // Make certain the dataspace is scalar
        H5S_class_t space_type = att_space.getSimpleExtentType();
        verify_val(space_type, H5S_SCALAR, "DataSpace::getSimpleExtentType", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_scalar_read()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_scalar_read()

/*-------------------------------------------------------------------------
 * Function:    test_attr_mult_write
 *
 * Purpose      Test writing multiple attributes.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_mult_write()
{
    // Output message about test being performed
    SUBTEST("Multiple Attribute Writing Functions");

    try {
        // Create file
        H5File fid1(FILE_MULTI, H5F_ACC_TRUNC);

        // Create dataspace for dataset
        hsize_t   dims1[] = {SPACE1_DIM1, SPACE1_DIM2, SPACE1_DIM3};
        DataSpace ds_space(SPACE1_RANK, dims1);

        // Create a dataset
        DataSet dataset = fid1.createDataSet(DSET1_NAME, PredType::NATIVE_UCHAR, ds_space);

        // Create dataspace for 1st attribute
        hsize_t   dims2[] = {ATTR1_DIM1};
        DataSpace att_space(ATTR1_RANK, dims2);

        // Create 1st attribute for the dataset
        Attribute ds_attr = dataset.createAttribute(ATTR1_NAME, PredType::NATIVE_INT, att_space);

        // Write attribute information
        ds_attr.write(PredType::NATIVE_INT, attr_data1);

        // Create dataspace for 2nd attribute
        hsize_t   dims3[] = {ATTR2_DIM1, ATTR2_DIM2};
        DataSpace att2_space(ATTR2_RANK, dims3);

        // Create 2nd attribute for the dataset
        Attribute ds_attr2 = dataset.createAttribute(ATTR2_NAME, PredType::NATIVE_INT, att2_space);

        // Write 2nd attribute information
        ds_attr2.write(PredType::NATIVE_INT, attr_data2);

        // Create dataspace for 3rd attribute
        hsize_t   dims4[] = {ATTR3_DIM1, ATTR3_DIM2, ATTR3_DIM3};
        DataSpace att3_space(ATTR3_RANK, dims4);

        // Create 3rd attribute for the dataset
        Attribute ds_attr3 = dataset.createAttribute(ATTR3_NAME, PredType::NATIVE_DOUBLE, att3_space);

        // Try creating an attribute that already exists.  This should fail
        // since two attributes cannot have the same name.  If an exception
        // is not thrown for this action by createAttribute, then throw an
        // invalid action exception.
        try {
            Attribute invalid_attr = dataset.createAttribute(ATTR3_NAME, PredType::NATIVE_DOUBLE, att3_space);

            // continuation here, that means no exception has been thrown
            throw InvalidActionException("DataSet::createAttribute",
                                         "Attempting to create a duplicate attribute");
        }
        catch (AttributeIException &E) // catching invalid creating attribute
        {
        } // do nothing, exception expected

        // Write 3rd attribute information
        ds_attr3.write(PredType::NATIVE_DOUBLE, attr_data3);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_mult_write()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_mult_write()

/*-------------------------------------------------------------------------
 * Function:    test_attr_mult_read
 *
 * Purpose      Test reading multiple attributes.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_mult_read()
{
    int     read_data1[ATTR1_DIM1]                         = {0};     // Buffer for reading 1st attribute
    int     read_data2[ATTR2_DIM1][ATTR2_DIM2]             = {{0}};   // Buffer for reading 2nd attribute
    double  read_data3[ATTR3_DIM1][ATTR3_DIM2][ATTR3_DIM3] = {{{0}}}; // Buffer for reading 3rd attribute
    hsize_t i, j, k;

    // Output message about test being performed
    SUBTEST("Multiple Attribute Reading Functions");

    try {
        // Open file
        H5File fid1(FILE_MULTI, H5F_ACC_RDWR);

        // Open the dataset
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Verify the correct number of attributes
        int num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 3, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Open 1st attribute for the dataset
        Attribute attr = dataset.openAttribute((unsigned)0);

        /* Verify Dataspace */

        // Get the dataspace of the attribute
        DataSpace space = attr.getSpace();

        // Get the rank of the dataspace and verify it
        int rank = space.getSimpleExtentNdims();
        verify_val(rank, ATTR1_RANK, "DataSpace::getSimpleExtentNdims", __LINE__, __FILE__);

        // Get the dims of the dataspace and verify them
        hsize_t dims[ATTR_MAX_DIMS]; // Attribute dimensions
        int     ndims = space.getSimpleExtentDims(dims);
        if ((long)dims[0] != (long)ATTR1_DIM1)
            TestErrPrintf("%d:attribute dimensions different: dims[0]=%d, should be %d\n", __LINE__,
                          (int)dims[0], ATTR1_DIM1);

        /* Verify Datatype */

        // Get the class of the datatype that is used by attr
        H5T_class_t type_class = attr.getTypeClass();

        // Verify that the type is of integer datatype
        verify_val(type_class, H5T_INTEGER, "Attribute::getTypeClass", __LINE__, __FILE__);

        // Get the integer datatype
        IntType i_type1 = attr.getIntType();

        // Get and verify the order of this type
        H5T_order_t order = i_type1.getOrder();
        verify_val(order, PredType::NATIVE_INT.getOrder(), "DataType::getOrder", __LINE__, __FILE__);

        // Get and verify the size of this type
        size_t size = i_type1.getSize();
        verify_val(size, PredType::NATIVE_INT.getSize(), "DataType::getSize", __LINE__, __FILE__);

        // Read attribute information
        attr.read(PredType::NATIVE_INT, read_data1);

        // Verify values read in
        for (i = 0; i < ATTR1_DIM1; i++)
            if (attr_data1[i] != read_data1[i])
                TestErrPrintf("%d: attribute data different: attr_data1[%d]=%d,read_data1[%d]=%d\n", __LINE__,
                              i, attr_data1[i], i, read_data1[i]);

        // Verify Name
        H5std_string attr_name = attr.getName();
        verify_val(attr_name, ATTR1_NAME, "DataType::getName", __LINE__, __FILE__);

        attr.close();
        space.close();

        // Open 2nd attribute for the dataset
        attr = dataset.openAttribute((unsigned)1);

        /* Verify Dataspace */

        // Get the dataspace of the attribute
        space = attr.getSpace();

        // Get the rank of the dataspace and verify it
        rank = space.getSimpleExtentNdims();
        verify_val(rank, ATTR2_RANK, "DataSpace::getSimpleExtentNdims", __LINE__, __FILE__);

        // Get the dims of the dataspace and verify them
        ndims = space.getSimpleExtentDims(dims);

        verify_val((long)dims[0], (long)ATTR2_DIM1, "DataSpace::getSimpleExtentDims", __LINE__, __FILE__);
        verify_val((long)dims[1], (long)ATTR2_DIM2, "DataSpace::getSimpleExtentDims", __LINE__, __FILE__);

        /* Verify Datatype */

        // Get the class of the datatype that is used by attr
        type_class = attr.getTypeClass();

        // Verify that the type is of integer datatype
        verify_val(type_class, H5T_INTEGER, "Attribute::getTypeClass", __LINE__, __FILE__);

        // Get the integer datatype
        IntType i_type2 = attr.getIntType();

        // Get and verify the order of this type
        order = i_type2.getOrder();
        verify_val(order, PredType::NATIVE_INT.getOrder(), "DataType::getOrder", __LINE__, __FILE__);

        // Get and verify the size of this type
        size = i_type2.getSize();
        verify_val(size, PredType::NATIVE_INT.getSize(), "DataType::getSize", __LINE__, __FILE__);

        // Read attribute information
        attr.read(PredType::NATIVE_INT, read_data2);
        // attr.read(i_type, read_data2);

        // Verify values read in
        for (i = 0; i < ATTR2_DIM1; i++)
            for (j = 0; j < ATTR2_DIM2; j++)
                if (attr_data2[i][j] != read_data2[i][j])
                    TestErrPrintf(
                        "%d: attribute data different: attr_data2[%d][%d]=%d, read_data2[%d][%d]=%d\n",
                        __LINE__, i, j, attr_data2[i][j], i, j, read_data2[i][j]);

        // Verify Name
        attr_name = attr.getName();
        verify_val(attr_name, ATTR2_NAME, "DataType::getName", __LINE__, __FILE__);
        attr.close();
        space.close();

        // Open 3rd attribute for the dataset
        attr = dataset.openAttribute((unsigned)2);

        /* Verify Dataspace */

        // Get the dataspace of the attribute
        space = attr.getSpace();

        // Get the rank of the dataspace and verify it
        rank = space.getSimpleExtentNdims();
        verify_val(rank, ATTR3_RANK, "DataSpace::getSimpleExtentNdims", __LINE__, __FILE__);

        // Get the dims of the dataspace and verify them
        ndims = space.getSimpleExtentDims(dims);
        verify_val((long)dims[0], (long)ATTR3_DIM1, "attribute dimensions", __FILE__, __LINE__);
        verify_val((long)dims[1], (long)ATTR3_DIM2, "attribute dimensions", __FILE__, __LINE__);
        verify_val((long)dims[2], (long)ATTR3_DIM3, "attribute dimensions", __FILE__, __LINE__);

        /* Verify Datatype */

        // Get the class of the datatype that is used by attr
        type_class = attr.getTypeClass();

        // Verify that the type is of compound datatype
        verify_val(type_class, H5T_FLOAT, "Attribute::getTypeClass", __LINE__, __FILE__);

        // Get the double datatype
        FloatType f_type = attr.getFloatType();

        // Get and verify the order of this type
        order = f_type.getOrder();
        verify_val(order, PredType::NATIVE_DOUBLE.getOrder(), "DataType::getOrder", __LINE__, __FILE__);

        // Get and verify the size of this type
        size = f_type.getSize();
        verify_val(size, PredType::NATIVE_DOUBLE.getSize(), "DataType::getSize", __LINE__, __FILE__);

        // Read attribute information
        attr.read(PredType::NATIVE_DOUBLE, read_data3);

        // Verify values read in
        for (i = 0; i < ATTR3_DIM1; i++)
            for (j = 0; j < ATTR3_DIM2; j++)
                for (k = 0; k < ATTR3_DIM3; k++)
                    if (attr_data3[i][j][k] != read_data3[i][j][k])
                        TestErrPrintf("%d: attribute data different: attr_data3[%d][%d][%d]=%f, "
                                      "read_data3[%d][%d][%d]=%f\n",
                                      __LINE__, i, j, k, attr_data3[i][j][k], i, j, k, read_data3[i][j][k]);

        // Verify Name
        attr_name = attr.getName();
        verify_val(attr_name, ATTR3_NAME, "DataType::getName", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_mult_read()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_mult_read()

/*-------------------------------------------------------------------------
 * Function:    test_attr_delete
 *
 * Purpose      Test deleting attribute from different hdf5 objects.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_delete()
{
    H5std_string attr_name; // Buffer for attribute names

    // Output message about test being performed
    SUBTEST("Removing Attribute Function");

    try {
        // Open file.
        H5File fid1(FILE_BASIC, H5F_ACC_RDWR);

        // Get the number of file attributes
        int num_attrs = fid1.getNumAttrs();
        verify_val(num_attrs, 2, "H5File::getNumAttrs", __LINE__, __FILE__);

        // Delete the second file attribute
        fid1.removeAttr(FATTR2_NAME);

        // Get the number of file attributes
        num_attrs = fid1.getNumAttrs();
        verify_val(num_attrs, 1, "H5File::getNumAttrs", __LINE__, __FILE__);

        // Verify the name of the only file attribute left
        Attribute fattr = fid1.openAttribute((unsigned)0);
        attr_name       = fattr.getName();
        verify_val(attr_name, FATTR1_NAME, "Attribute::getName", __LINE__, __FILE__);
        fattr.close();

        // Test deleting non-existing attribute

        // Open the dataset
        DataSet dataset = fid1.openDataSet(DSET1_NAME);

        // Verify the correct number of attributes
        num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 3, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Try to delete bogus attribute, should fail
        try {
            dataset.removeAttr("Bogus");

            // continuation here, that means no exception has been thrown
            throw InvalidActionException("DataSet::removeAttr",
                                         "Attempting to remove non-existing attribute");
        }
        catch (AttributeIException &E) // catching invalid removing attribute
        {
        } // do nothing, exception expected

        // Test deleting dataset's attributes

        // Verify the correct number of attributes
        num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 3, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Delete middle (2nd) attribute
        dataset.removeAttr(ATTR2_NAME);

        // Verify the correct number of attributes
        num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 2, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Open 1st attribute for the dataset
        Attribute attr = dataset.openAttribute((unsigned)0);

        // Verify Name
        attr_name = attr.getName();
        verify_val(attr_name, ATTR1_NAME, "Attribute::getName", __LINE__, __FILE__);

        // Close attribute
        attr.close();

        // Open last (formally 3rd) attribute for the dataset
        attr = dataset.openAttribute((unsigned)1);

        // Verify Name
        attr_name = attr.getName();
        verify_val(attr_name, ATTR3_NAME, "Attribute::getName", __LINE__, __FILE__);

        attr.close();

        // Delete first attribute
        dataset.removeAttr(ATTR1_NAME);

        // Verify the correct number of attributes
        num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 1, "DataSet::getNumAttrs", __LINE__, __FILE__);

        // Open the only attribute for the dataset (formally 3rd)
        attr = dataset.openAttribute((unsigned)0);

        // Verify Name
        attr_name = attr.getName();
        verify_val(attr_name, ATTR3_NAME, "Attribute::getName", __LINE__, __FILE__);
        // Close attribute
        attr.close();

        // Delete first attribute
        dataset.removeAttr(ATTR3_NAME);

        // Verify the correct number of attributes
        num_attrs = dataset.getNumAttrs();
        verify_val(num_attrs, 0, "DataSet::getNumAttrs", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_delete()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_delete()

/*-------------------------------------------------------------------------
 * Function:    test_attr_dtype_shared
 *
 * Purpose      Test accessing attributes using shared datatypes.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_dtype_shared()
{
    int data  = 8; // Data to write
    int rdata = 0; // Data read in
#ifndef H5_NO_DEPRECATED_SYMBOLS
    H5G_stat_t statbuf; // Object's information
#endif
    h5_stat_size_t filesize; // Size of file after modifications

    // Output message about test being performed
    SUBTEST("Shared Datatypes with Attributes");

    try {
        // Create a file
        H5File fid1(FILE_DTYPE, H5F_ACC_TRUNC);

        // Close file
        fid1.close();

        // Get size of file
        h5_stat_size_t empty_filesize; // Size of empty file
        empty_filesize = h5_get_file_size(FILE_DTYPE.c_str(), H5P_DEFAULT);
        if (empty_filesize < 0)
            TestErrPrintf("Line %d: file size wrong!\n", __LINE__);

        // Open the file again
        fid1.openFile(FILE_DTYPE, H5F_ACC_RDWR);

        // Enclosing to work around the issue of unused variables and/or
        // objects created by copy constructors stay around until end of
        // scope, causing incorrect number of ref counts.
        { // First enclosed block

            // Create a datatype to commit and use
            IntType dtype(PredType::NATIVE_INT);

            // Commit datatype to file
            dtype.commit(fid1, TYPE1_NAME);

#ifndef H5_NO_DEPRECATED_SYMBOLS
            // Check reference count on named datatype
            fid1.getObjinfo(TYPE1_NAME, statbuf);
            verify_val((int)statbuf.nlink, 1, "DataType::getObjinfo", __LINE__, __FILE__);
#endif

            // Create dataspace for dataset
            DataSpace dspace;

            DataSet dset = fid1.createDataSet(DSET1_NAME, dtype, dspace);

#ifndef H5_NO_DEPRECATED_SYMBOLS
            // Check reference count on named datatype
            fid1.getObjinfo(TYPE1_NAME, statbuf);
            verify_val((int)statbuf.nlink, 2, "H5File::getObjinfo", __LINE__, __FILE__);
#endif

            // Create attribute on dataset
            Attribute attr = dset.createAttribute(ATTR1_NAME, dtype, dspace);

#ifndef H5_NO_DEPRECATED_SYMBOLS
            // Check reference count on named datatype
            fid1.getObjinfo(TYPE1_NAME, statbuf);
            verify_val((int)statbuf.nlink, 3, "DataSet::getObjinfo", __LINE__, __FILE__);
#endif

            // Close attribute
            attr.close();

            // Delete attribute
            dset.removeAttr(ATTR1_NAME);

#ifndef H5_NO_DEPRECATED_SYMBOLS
            // Check reference count on named datatype
            fid1.getObjinfo(TYPE1_NAME, statbuf);
            verify_val((int)statbuf.nlink, 2, "DataSet::getObjinfo after DataSet::removeAttr", __LINE__,
                       __FILE__);
#endif

            // Create attribute on dataset
            attr = dset.createAttribute(ATTR1_NAME, dtype, dspace);

#ifndef H5_NO_DEPRECATED_SYMBOLS
            // Check reference count on named datatype
            fid1.getObjinfo(TYPE1_NAME, statbuf);
            verify_val((int)statbuf.nlink, 3, "DataSet::createAttribute", __LINE__, __FILE__);
#endif

            // Write data into the attribute
            attr.write(PredType::NATIVE_INT, &data);

            // Close attribute, dataset, dataspace, datatype, and file
            attr.close();
            dset.close();
            dspace.close();
            dtype.close();
        } // end of first enclosing

        fid1.close();

        // Open the file again
        fid1.openFile(FILE_DTYPE, H5F_ACC_RDWR);

        { // Second enclosed block...

            // Open dataset
            DataSet *dset2 = new DataSet(fid1.openDataSet(DSET1_NAME));

            // Open attribute
            Attribute *attr2 = new Attribute(dset2->openAttribute(ATTR1_NAME));

            // Read data from the attribute
            attr2->read(PredType::NATIVE_INT, &rdata);
            verify_val(data, rdata, "Attribute::read", __LINE__, __FILE__);

            // Close attribute and dataset
            delete attr2;
            delete dset2;

#ifndef H5_NO_DEPRECATED_SYMBOLS
            // Check reference count on named datatype
            fid1.getObjinfo(TYPE1_NAME, statbuf);
            verify_val((int)statbuf.nlink, 3, "DataSet::openAttribute", __LINE__, __FILE__);
#endif
        } // end of second enclosing

        // Unlink the dataset
        fid1.unlink(DSET1_NAME);

#ifndef H5_NO_DEPRECATED_SYMBOLS
        // Check reference count on named datatype
        fid1.getObjinfo(TYPE1_NAME, statbuf);
        verify_val((int)statbuf.nlink, 1, "H5File::unlink", __LINE__, __FILE__);
#endif

        // Unlink the named datatype
        fid1.unlink(TYPE1_NAME);

        // Close file
        fid1.close();

        // Check size of file
        filesize = h5_get_file_size(FILE_DTYPE.c_str(), H5P_DEFAULT);
        verify_val((long)filesize, (long)empty_filesize, "Checking file size", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_dtype_shared()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_dtype_shared()

/*-------------------------------------------------------------------------
 * Function:    test_string_attr
 *
 * Purpose      Test read/write string attribute.
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
/* Info for a string attribute */
const H5std_string ATTR1_FL_STR_NAME("String_attr 1");
const H5std_string ATTR2_FL_STR_NAME("String_attr 2");
const H5std_string ATTR_VL_STR_NAME("String_attr");
const H5std_string ATTRSTR_DATA("String Attribute");
const int          ATTR_LEN = 17;

static void
test_string_attr()
{
    // Output message about test being performed
    SUBTEST("I/O on FL and VL String Attributes");

    try {
        // Create file
        H5File fid1(FILE_BASIC, H5F_ACC_RDWR);

        //
        // Fixed-lenth string attributes
        //
        // Create a fixed-length string datatype to refer to.
        StrType fls_type(0, ATTR_LEN);

        // Open the root group.
        Group root = fid1.openGroup("/");

        // Create dataspace for the attribute.
        DataSpace att_space(H5S_SCALAR);

        /* Test Attribute::write(...,const void *buf) with Fixed len string */

        // Create an attribute for the root group.
        Attribute gr_flattr1 = root.createAttribute(ATTR1_FL_STR_NAME, fls_type, att_space);

        // Write data to the attribute.
        gr_flattr1.write(fls_type, ATTRSTR_DATA.c_str());

        /* Test Attribute::write(...,const H5std_string& strg) with FL string */

        // Create an attribute for the root group.
        Attribute gr_flattr2 = root.createAttribute(ATTR2_FL_STR_NAME, fls_type, att_space);

        // Write data to the attribute.
        gr_flattr2.write(fls_type, ATTRSTR_DATA);

        /* Test Attribute::read(...,void *buf) with FL string */

        // Read and verify the attribute string as a string of chars.
        char flstring_att_check[ATTR_LEN];
        gr_flattr1.read(fls_type, flstring_att_check);
        if (HDstrcmp(flstring_att_check, ATTRSTR_DATA.c_str()) != 0)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,flstring_att_check=%s\n",
                          __LINE__, ATTRSTR_DATA.c_str(), flstring_att_check);

        // Read and verify the attribute string as a string of chars; buffer
        // is dynamically allocated.
        size_t attr_size = gr_flattr1.getInMemDataSize();
        char * fl_dyn_string_att_check;
        fl_dyn_string_att_check = new char[attr_size + 1];
        gr_flattr1.read(fls_type, fl_dyn_string_att_check);
        if (HDstrcmp(fl_dyn_string_att_check, ATTRSTR_DATA.c_str()) != 0)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,flstring_att_check=%s\n",
                          __LINE__, ATTRSTR_DATA.c_str(), fl_dyn_string_att_check);
        delete[] fl_dyn_string_att_check;

        /* Test Attribute::read(...,H5std_string& strg) with FL string */

        // Read and verify the attribute string as an std::string.
        H5std_string read_flstr1;
        gr_flattr1.read(fls_type, read_flstr1);
        if (read_flstr1 != ATTRSTR_DATA)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,read_flstr1=%s\n", __LINE__,
                          ATTRSTR_DATA.c_str(), read_flstr1.c_str());

        // Read and verify the attribute string as a string of chars.
        HDstrcpy(flstring_att_check, "");
        gr_flattr2.read(fls_type, flstring_att_check);
        if (HDstrcmp(flstring_att_check, ATTRSTR_DATA.c_str()) != 0)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,flstring_att_check=%s\n",
                          __LINE__, ATTRSTR_DATA.c_str(), flstring_att_check);

        /* Test Attribute::read(...,H5std_string& strg) with FL string */

        // Read and verify the attribute string as an std::string.
        H5std_string read_flstr2;
        gr_flattr2.read(fls_type, read_flstr2);
        if (read_flstr2 != ATTRSTR_DATA)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,read_flstr2=%s\n", __LINE__,
                          ATTRSTR_DATA.c_str(), read_flstr2.c_str());

        //
        // Variable-lenth string attributes
        //
        // Create a variable length string datatype to refer to.
        StrType vls_type(0, H5T_VARIABLE);

        // Create an attribute for the root group.
        Attribute gr_vlattr = root.createAttribute(ATTR_VL_STR_NAME, vls_type, att_space);

        // Write data to the attribute.
        gr_vlattr.write(vls_type, ATTRSTR_DATA);

        /* Test Attribute::read(...,void *buf) with Variable len string */
        // Read and verify the attribute string as a string of chars.
        char *string_att_check;
        gr_vlattr.read(vls_type, &string_att_check);
        if (HDstrcmp(string_att_check, ATTRSTR_DATA.c_str()) != 0)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,string_att_check=%s\n",
                          __LINE__, ATTRSTR_DATA.c_str(), string_att_check);
        HDfree(string_att_check);

        /* Test Attribute::read(...,H5std_string& strg) with VL string */
        // Read and verify the attribute string as an std::string.
        H5std_string read_str;
        gr_vlattr.read(vls_type, read_str);
        if (read_str != ATTRSTR_DATA)
            TestErrPrintf("Line %d: Attribute data different: ATTRSTR_DATA=%s,read_str=%s\n", __LINE__,
                          ATTRSTR_DATA.c_str(), read_str.c_str());
        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_string_attr()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_string_attr()

/*-------------------------------------------------------------------------
 * Function:    test_attr_exists
 *
 * Purpose      Test checking for attribute existence.
 *
 * Return       None
 *
 * Note
 *              Additional attrExists tests are in test_attr_rename().
 *-------------------------------------------------------------------------
 */
static void
test_attr_exists()
{
    // Output message about test being performed
    SUBTEST("Check Attribute Existence");

    try {
        // Open file.
        H5File fid1(FILE_BASIC, H5F_ACC_RDWR);

        // Open the root group.
        Group root = fid1.openGroup("/");

        // Check for existence of attribute
        bool attr_exists = fid1.attrExists(ATTR1_FL_STR_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists",
                                         "fid1, ATTR1_FL_STR_NAMEAttribute should exist but does not");

        // Check for existence of attribute
        attr_exists = fid1.attrExists(FATTR1_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists",
                                         "fid1,FATTR2_NAMEAttribute should exist but does not");

        // Open a group.
        Group group = fid1.openGroup(GROUP1_NAME);

        // Check for existence of attribute
        attr_exists = group.attrExists(ATTR2_NAME);
        if (attr_exists == false)
            throw InvalidActionException("H5File::attrExists",
                                         "group, ATTR2_NAMEAttribute should exist but does not");

        PASSED();
    } // end try block

    catch (InvalidActionException &E) {
        issue_fail_msg("test_attr_exists()", __LINE__, __FILE__, E.getCDetailMsg());
    }
    catch (Exception &E) {
        issue_fail_msg("test_attr_exists()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_exists()

/*-------------------------------------------------------------------------
 * Function:    test_attr_dense_create
 *
 * Purpose      Test phase change properties
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
const H5std_string FILE_CRTPROPS("tattr_crt_properties.h5");
const int          NAME_BUF_SIZE   = 1024;
const unsigned     MAX_COMPACT_DEF = 8;
const unsigned     MIN_DENSE_DEF   = 6;

static void
test_attr_dense_create(FileCreatPropList &fcpl, FileAccPropList &fapl)
{
    // Output message about test being performed
    SUBTEST("Dense Attribute Storage Creation");

    try {
        // Create file
        H5File fid1(FILE_CRTPROPS, H5F_ACC_TRUNC, fcpl, fapl);

        // Close file
        fid1.close();

        // Get size of file
        h5_stat_size_t empty_filesize; // Size of empty file
        empty_filesize = h5_get_file_size(FILE_CRTPROPS.c_str(), fapl.getId());
        if (empty_filesize < 0)
            TestErrPrintf("Line %d: file size wrong!\n", __LINE__);

        // Re-open file
        fid1.openFile(FILE_CRTPROPS, H5F_ACC_RDWR, fapl);

        // Create dataspace for dataset
        DataSpace ds_space(H5S_SCALAR);

        //  Create dataset creation property list.
        DSetCreatPropList dcpl;

        // Create a dataset
        DataSet dataset = fid1.createDataSet(DSET1_NAME, PredType::NATIVE_UCHAR, ds_space, dcpl);

        unsigned max_compact = 0, min_dense = 0;

        // Retrieve limits for compact/dense attribute storage
        dcpl.getAttrPhaseChange(max_compact, min_dense);
        verify_val(max_compact, MAX_COMPACT_DEF, "DSetCreatPropList::getAttrPhaseChange", __LINE__, __FILE__);
        verify_val(min_dense, MIN_DENSE_DEF, "DSetCreatPropList::getAttrPhaseChange", __LINE__, __FILE__);

        // Set new compact/dense attribute storage limits to some random numbers
        dcpl.setAttrPhaseChange(7, 5);

        // Retrieve limits for compact/dense attribute storage and verify them
        dcpl.getAttrPhaseChange(max_compact, min_dense);
        verify_val(max_compact, static_cast<unsigned>(7), "DSetCreatPropList::getAttrPhaseChange", __LINE__,
                   __FILE__);
        verify_val(min_dense, static_cast<unsigned>(5), "DSetCreatPropList::getAttrPhaseChange", __LINE__,
                   __FILE__);

        // Close property list
        dcpl.close();

        // H5O__is_attr_dense_test - un-usable

        // Add attributes, until just before converting to dense storage
        char     attr_name[NAME_BUF_SIZE];
        unsigned attr_num;
        for (attr_num = 0; attr_num < max_compact; attr_num++) {
            // Create attribute
            sprintf(attr_name, "attr %02u", attr_num);
            Attribute attr = dataset.createAttribute(attr_name, PredType::NATIVE_UINT, ds_space);

            // Write data to the attribute
            attr.write(PredType::NATIVE_UINT, &attr_num);
        } // end for

        // H5O__is_attr_dense_test - un-usable

        { // Add one more attribute, to push into "dense" storage

            // Create another attribute
            sprintf(attr_name, "attr %02u", attr_num);
            Attribute attr = dataset.createAttribute(attr_name, PredType::NATIVE_UINT, ds_space);

            // Write data to the attribute
            attr.write(PredType::NATIVE_UINT, &attr_num);
        }

        // Attempt to add attribute again, which should fail
        try {
            // Create another attribute
            sprintf(attr_name, "attr %02u", attr_num);
            Attribute attr = dataset.createAttribute(attr_name, PredType::NATIVE_UINT, ds_space);

            // continuation here, that means no exception has been thrown
            throw InvalidActionException("DataSet::createAttribute",
                                         "Maximum number of attributes has been reached");
        }
        catch (AttributeIException &E) // catching invalid action
        {
        } // do nothing, exception expected

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_dense_create()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_dense_create()

/*-------------------------------------------------------------------------
 * Function:    test_attr_corder_create_basic
 *
 * Purpose      Test creation order properties
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
static void
test_attr_corder_create_basic(FileCreatPropList &fcpl, FileAccPropList &fapl)
{
    // Output message about test being performed
    SUBTEST("Basic Code for Attributes with Creation Order Info");

    try {
        // Create file
        H5File fid1(FILE_CRTPROPS, H5F_ACC_TRUNC, fcpl, fapl);

        //  Create dataset creation property list.
        DSetCreatPropList dcpl;

        // Get creation order indexing on object
        unsigned crt_order_flags = 0;
        crt_order_flags          = dcpl.getAttrCrtOrder();
        verify_val(crt_order_flags, (unsigned)0, "DSetCreatPropList::getAttrCrtOrder", __LINE__, __FILE__);

        // Setting invalid combination of a attribute order creation order
        // indexing on should fail
        try {
            dcpl.setAttrCrtOrder(H5P_CRT_ORDER_INDEXED);

            // continuation here, that means no exception has been thrown
            throw InvalidActionException("DSetCreatPropList::getAttrCrtOrder",
                                         "Indexing cannot be set alone, order tracking is required");
        }
        catch (PropListIException &E) // catching invalid action
        {
        } // do nothing, exception expected

        // Set attribute creation order tracking & indexing for object then
        // verify them
        dcpl.setAttrCrtOrder(H5P_CRT_ORDER_TRACKED | H5P_CRT_ORDER_INDEXED);
        crt_order_flags = dcpl.getAttrCrtOrder();
        verify_val(crt_order_flags, (unsigned)(H5P_CRT_ORDER_TRACKED | H5P_CRT_ORDER_INDEXED),
                   "DSetCreatPropList::getAttrCrtOrder", __LINE__, __FILE__);

        // Create dataspace for dataset
        DataSpace ds_space(H5S_SCALAR);

        // Create a dataset
        DataSet dataset = fid1.createDataSet(DSET1_NAME, PredType::NATIVE_UCHAR, ds_space, dcpl);

        // Close dataspace
        ds_space.close();

        // Check on dataset's attribute storage status.
        // NOTE: Wrappers not available yet (H5O__is_attr_empty_test
        // and H5O__is_attr_dense_test)

        // Close dataset
        dataset.close();

        // Close property list
        dcpl.close();

        // Close file
        fid1.close();

        // Re-open file
        fid1.openFile(FILE_CRTPROPS, H5F_ACC_RDWR, fapl);

        // Open dataset created previously
        dataset = fid1.openDataSet(DSET1_NAME);

        // Retrieve dataset creation property list for the dataset
        dcpl = dataset.getCreatePlist();

        // Query the attribute creation properties
        crt_order_flags = dcpl.getAttrCrtOrder();
        verify_val(crt_order_flags, (unsigned)(H5P_CRT_ORDER_TRACKED | H5P_CRT_ORDER_INDEXED),
                   "DSetCreatPropList::getAttrCrtOrder", __LINE__, __FILE__);

        PASSED();
    } // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr_corder_create_basic()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr_corder_create_basic()

/*-------------------------------------------------------------------------
 * Function:    test_attr
 *
 * Purpose      Main attribute testing routine
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
extern "C" void
test_attr()
{
    // Output message about test being performed
    MESSAGE(5, ("Testing Attributes\n"));

    try {
        // Create a default file access property list
        FileAccPropList fapl;

        // Copy the file access property list for new format test
        FileAccPropList fapl_new = fapl;

        // Set the "use the latest version of the format" bounds for creating
        // objects in the file
        fapl_new.setLibverBounds(H5F_LIBVER_LATEST, H5F_LIBVER_LATEST);

        // Create a default file creation property list
        FileCreatPropList fcpl;

        // Copy the file creation property list for new format test
        FileCreatPropList fcpl_new = fcpl;

        // Wrappers for ..._shared_mesg_nindexes are not available, skip
        // use_shared test

        // Loop over using new group format
        unsigned new_format;
        for (new_format = FALSE; new_format <= TRUE; new_format++) {
            FileAccPropList curr_fapl;

            // Set the file access proplist for the type of format
            if (new_format) {
                MESSAGE(7, ("testing with new file format\n"));
                curr_fapl = fapl_new;
            }
            else {
                MESSAGE(7, ("testing with old file format\n"));
                curr_fapl = fapl;
            }

            test_attr_basic_write(); // Test basic H5A writing code
            test_attr_getname();     // Test overloads of Attribute::getName
            test_attr_rename();      // Test renaming attribute
            test_attr_basic_read();  // Test basic H5A reading code

            test_attr_compound_write(); // Test complex datatype H5A writing code
            test_attr_compound_read();  // Test complex datatype H5A reading code

            test_attr_scalar_write(); // Test scalar dataspace H5A writing code
            test_attr_scalar_read();  // Test scalar dataspace H5A reading code

            test_attr_mult_write(); // Test writing multiple attributes
            test_attr_mult_read();  // Test reading multiple attributes
            test_attr_delete();     // Test deleting attributes

            test_attr_dtype_shared(); // Test using shared datatypes in attributes

            test_string_attr(); // Test read/write string attribute
            test_attr_exists(); // Test H5Location::attrExists

            // Test with new format
            if (new_format) {
                // Test dense attribute storage creation
                test_attr_dense_create(fcpl, curr_fapl);

                // Test create objects with attribute creation info
                test_attr_corder_create_basic(fcpl, curr_fapl);
            }
        } // end for
    }     // end try block

    catch (Exception &E) {
        issue_fail_msg("test_attr()", __LINE__, __FILE__, E.getCDetailMsg());
    }
} // test_attr()

/*-------------------------------------------------------------------------
 * Function:    cleanup_attr
 *
 * Purpose      Cleanup temporary test files
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
extern "C" void
cleanup_attr()
{
    HDremove(FILE_BASIC.c_str());
    HDremove(FILE_COMPOUND.c_str());
    HDremove(FILE_SCALAR.c_str());
    HDremove(FILE_MULTI.c_str());
    HDremove(FILE_DTYPE.c_str());
    HDremove(FILE_CRTPROPS.c_str());
}