summaryrefslogtreecommitdiffstats
path: root/java/test/TestH5.java
blob: b5bc3c1e64ff36b8c5929c27ded1274e5c7e147b (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * 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://www.hdfgroup.org/licenses.               *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

package test;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Reader;
import java.io.StreamTokenizer;

import hdf.hdf5lib.H5;
import hdf.hdf5lib.HDF5Constants;
import hdf.hdf5lib.exceptions.HDF5Exception;
import hdf.hdf5lib.exceptions.HDF5LibraryException;

import org.junit.After;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;

/**
 * @author xcao
 *
 */
public class TestH5 {
    @Rule
    public TestName testname                       = new TestName();
    private static final String H5_FILE            = "testData.h5";
    private static final String EXPORT_FILE        = "testExport.txt";
    private static final String H5_REGION_FILE     = "trefer_reg.h5";
    private static final String EXPORT_REGION_FILE = "testExportReg.txt";
    private static final String H5_ATTR_FILE       = "trefer_attr.h5";
    private static final String EXPORT_ATTR_FILE   = "testExportAttr.txt";
    private static final String H5_DREG_FILE       = "tdatareg.h5";
    private static final String EXPORT_DREG_FILE   = "testExportDReg.txt";
    private static final String H5_AREG_FILE       = "tattrreg.h5";
    private static final String EXPORT_AREG_FILE   = "testExportAReg.txt";
    private static final int DIM_X                 = 4;
    private static final int DIM_Y                 = 6;
    private static final int DIM_BLKS              = 36;
    private static final int DIM_PNTS              = 10;
    private static final int DIM_ATTR              = 12;
    private static final int RANK                  = 2;
    long H5fid                                     = HDF5Constants.H5I_INVALID_HID;
    long H5dsid                                    = HDF5Constants.H5I_INVALID_HID;
    long H5did                                     = HDF5Constants.H5I_INVALID_HID;
    long[] H5dims                                  = {DIM_X, DIM_Y};

    private final void _deleteFile(String filename)
    {
        File file = null;
        try {
            file = new File(filename);
        }
        catch (Throwable err) {
        }

        if (file.exists()) {
            try {
                file.delete();
            }
            catch (SecurityException e) {
            }
        }
    }

    private final long _createDataset(long fid, long dsid, String name, long dapl)
    {
        long did = HDF5Constants.H5I_INVALID_HID;
        try {
            did = H5.H5Dcreate(fid, name, HDF5Constants.H5T_STD_I32LE, dsid, HDF5Constants.H5P_DEFAULT,
                               HDF5Constants.H5P_DEFAULT, dapl);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Dcreate: " + err);
        }
        assertTrue("TestH5._createDataset: ", did > 0);

        return did;
    }

    private final void _createH5File()
    {
        try {
            H5fid  = H5.H5Fcreate(H5_FILE, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
                                  HDF5Constants.H5P_DEFAULT);
            H5dsid = H5.H5Screate_simple(2, H5dims, null);
            H5did  = _createDataset(H5fid, H5dsid, "dset", HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5Pfapl.createH5file: " + err);
        }
        assertTrue("TestH5.createH5file: H5.H5Fcreate: ", H5fid > 0);
        assertTrue("TestH5.createH5file: H5.H5Screate_simple: ", H5dsid > 0);
        assertTrue("TestH5.createH5file: _createDataset: ", H5did > 0);

        try {
            H5.H5Fflush(H5fid, HDF5Constants.H5F_SCOPE_LOCAL);
        }
        catch (Throwable err) {
            err.printStackTrace();
        }
    }

    private final void _closeH5File()
    {
        if (H5did >= 0)
            try {
                H5.H5Dclose(H5did);
            }
            catch (Exception ex) {
            }
        if (H5dsid > 0)
            try {
                H5.H5Sclose(H5dsid);
            }
            catch (Exception ex) {
            }
        if (H5fid > 0)
            try {
                H5.H5Fclose(H5fid);
            }
            catch (Exception ex) {
            }
        H5fid  = HDF5Constants.H5I_INVALID_HID;
        H5dsid = HDF5Constants.H5I_INVALID_HID;
        H5did  = HDF5Constants.H5I_INVALID_HID;
    }

    public void _openH5File(String filename, String dsetname)
    {
        try {
            H5fid = H5.H5Fopen(filename, HDF5Constants.H5F_ACC_RDONLY, HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5._openH5file: " + err);
        }
        assertTrue("TestH5._openH5file: H5.H5Fopen: ", H5fid >= 0);
        try {
            H5did = H5.H5Dopen(H5fid, dsetname, HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5._openH5file: " + err);
        }
        assertTrue("TestH5._openH5file: H5.H5Dopen: ", H5did >= 0);
        try {
            H5dsid = H5.H5Dget_space(H5did);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5._openH5file: " + err);
        }
        assertTrue("TestH5._openH5file: H5.H5Screate_simple: ", H5dsid > 0);
    }

    public final void _deleteH5file()
    {
        _closeH5File();
        _deleteFile(H5_FILE);
    }

    @After
    public void closeH5File() throws HDF5LibraryException
    {
        _closeH5File();
        assertTrue("H5 open ids is 0", H5.getOpenIDCount() == 0);
        System.out.println();
    }

    @Before
    public void verifyCount() throws NullPointerException, HDF5Exception
    {
        assertTrue("H5 open ids is 0", H5.getOpenIDCount() == 0);
        System.out.print(testname.getMethodName());
    }

    /**
     * Test method for {@link hdf.hdf5lib.H5#J2C(int)}.
     * NOTE:
     * H5F_ACC_DEBUG no longer prints any special debug info. Even though the symbol is
     * being retained hdf java does not access the symbol.
     */
    @Test
    public void testJ2C()
    {
        int H5F_ACC_RDONLY   = 0x0000;
        int H5F_ACC_RDWR     = 0x0001;
        int H5F_ACC_TRUNC    = 0x0002;
        int H5F_ACC_EXCL     = 0x0004;
        int H5F_ACC_CREAT    = 0x0010;
        int H5F_OBJ_FILE     = 0x0001;
        int H5F_OBJ_DATASET  = 0x0002;
        int H5F_OBJ_GROUP    = 0x0004;
        int H5F_OBJ_DATATYPE = 0x0008;
        int H5F_OBJ_ATTR     = 0x0010;
        int H5F_OBJ_ALL   = H5F_OBJ_FILE | H5F_OBJ_DATASET | H5F_OBJ_GROUP | H5F_OBJ_DATATYPE | H5F_OBJ_ATTR;
        int H5F_OBJ_LOCAL = 0x0020;

        int definedValues[] = {H5F_ACC_RDONLY,   H5F_ACC_RDWR, H5F_ACC_TRUNC,   H5F_ACC_EXCL,
                               H5F_ACC_CREAT,    H5F_OBJ_FILE, H5F_OBJ_DATASET, H5F_OBJ_GROUP,
                               H5F_OBJ_DATATYPE, H5F_OBJ_ATTR, H5F_OBJ_ALL,     H5F_OBJ_LOCAL};

        int j2cValues[] = {
            HDF5Constants.H5F_ACC_RDONLY,  HDF5Constants.H5F_ACC_RDWR,  HDF5Constants.H5F_ACC_TRUNC,
            HDF5Constants.H5F_ACC_EXCL,    HDF5Constants.H5F_ACC_CREAT, HDF5Constants.H5F_OBJ_FILE,
            HDF5Constants.H5F_OBJ_DATASET, HDF5Constants.H5F_OBJ_GROUP, HDF5Constants.H5F_OBJ_DATATYPE,
            HDF5Constants.H5F_OBJ_ATTR,    HDF5Constants.H5F_OBJ_ALL,   HDF5Constants.H5F_OBJ_LOCAL};

        for (int i = 0; i < definedValues.length; i++) {
            assertEquals(definedValues[i], j2cValues[i]);
        }

        assertFalse(H5F_ACC_RDONLY == HDF5Constants.H5F_ACC_RDWR);
        assertFalse(H5F_OBJ_FILE == HDF5Constants.H5F_OBJ_GROUP);
    }

    /**
     * Test method for {@link hdf.hdf5lib.H5#H5error_off()}.
     */
    @Test
    public void testH5error_off()
    {
        try {
            H5.H5error_off();
        }
        catch (Throwable err) {
            fail("H5.H5error_off failed: " + err);
        }
    }

    /**
     * Test method for {@link hdf.hdf5lib.H5#H5open()}.
     */
    @Test
    public void testH5open()
    {
        try {
            H5.H5open();
        }
        catch (Throwable err) {
            fail("H5.H5open failed: " + err);
        }
    }

    /**
     * Test method for {@link hdf.hdf5lib.H5#H5garbage_collect()}.
     */
    @Test
    public void testH5garbage_collect()
    {
        try {
            H5.H5garbage_collect();
        }
        catch (Throwable err) {
            fail("H5.H5garbage_collect failed: " + err);
        }
    }

    /**
     * Test method for
     * {@link hdf.hdf5lib.H5#H5set_free_list_limits(int, int, int, int, int, int)}
     * .
     */
    @Test
    public void testH5set_free_list_limits()
    {
        int reg_global_lim = 1;
        int reg_list_lim   = 1;
        int arr_global_lim = 1;
        int arr_list_lim   = 1;
        int blk_global_lim = 1;
        int blk_list_lim   = 1;

        try {
            H5.H5set_free_list_limits(reg_global_lim, reg_list_lim, arr_global_lim, arr_list_lim,
                                      blk_global_lim, blk_list_lim);
        }
        catch (Throwable err) {
            fail("H5.H5set_free_list_limits failed: " + err);
        }
    }

    /**
     * Test method for {@link hdf.hdf5lib.H5#H5get_libversion(int[])}.
     */
    @Test
    public void testH5get_libversion()
    {
        int libversion[] = {1, 13, 2};

        try {
            H5.H5get_libversion(libversion);
        }
        catch (Throwable err) {
            fail("H5.H5get_libversion: " + err);
        }

        for (int i = 0; i < 2; i++)
            assertEquals(H5.LIB_VERSION[i], libversion[i]);

        for (int i = 0; i < 2; i++)
            assertFalse(libversion[i] == 0);
    }

    /**
     * Test method for {@link hdf.hdf5lib.H5#H5get_libversion(int[])}
     * to ensure a null libversion parameter causes the function to
     * fail.
     */
    @Test
    public void testH5get_libversion_null_param()
    {
        try {
            H5.H5get_libversion(null);
        }
        catch (Throwable err) {
            return;
        }

        fail("H5.H5get_libversion: succeeded with a null libversion parameter!");
    }

    /**
     * Test method for
     * {@link hdf.hdf5lib.H5#H5check_version(int, int, int)}.
     */
    @Test
    public void testH5check_version()
    {
        int majnum = 1, minnum = 13, relnum = 3;

        try {
            H5.H5check_version(majnum, minnum, relnum);
        }
        catch (Throwable err) {
            fail("H5.H5check_version failed: " + err);
        }

        try {
            H5.H5check_version(-1, 0, 0);
        }
        catch (Throwable err) {
            fail("H5.H5check_version failed: " + err);
        }
    }

    @Test
    public void testIsSerializable()
    {
        H5 test                   = new H5();
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ObjectOutputStream oos;
        try {
            oos = new ObjectOutputStream(out);
            oos.writeObject(test);
            oos.close();
        }
        catch (IOException err) {
            err.printStackTrace();
            fail("ObjectOutputStream failed: " + err);
        }
        assertTrue(out.toByteArray().length > 0);
    }

    @SuppressWarnings("static-access")
    @Test
    public void serializeToDisk()
    {
        try {
            H5 test = new H5();

            FileOutputStream fos   = new FileOutputStream("temph5.ser");
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(test);
            oos.close();
        }
        catch (Exception ex) {
            fail("Exception thrown during test: " + ex.toString());
        }

        try {
            FileInputStream fis   = new FileInputStream("temph5.ser");
            ObjectInputStream ois = new ObjectInputStream(fis);
            H5 test               = (hdf.hdf5lib.H5)ois.readObject();
            ois.close();

            assertTrue("H5.LIB_VERSION[0]", test.LIB_VERSION[0] == H5.LIB_VERSION[0]);
            assertTrue("H5.LIB_VERSION[1]", test.LIB_VERSION[1] == H5.LIB_VERSION[1]);
            //            assertTrue("H5.LIB_VERSION[2]", test.LIB_VERSION[2]==H5.LIB_VERSION[2]);

            // Clean up the file
            new File("temph5.ser").delete();
        }
        catch (Exception ex) {
            fail("Exception thrown during test: " + ex.toString());
        }
    }

    @Test
    public void testH5export_dataset()
    {
        int[][] dset_data   = new int[DIM_X][DIM_Y];
        int[][] dset_indata = new int[DIM_X][DIM_Y];
        int FILLVAL         = 99;

        _createH5File();

        // Initialize the dataset.
        for (int indx = 0; indx < DIM_X; indx++)
            for (int jndx = 0; jndx < DIM_Y; jndx++)
                dset_data[indx][jndx] = FILLVAL;

        try {
            if (H5did >= 0)
                H5.H5Dwrite(H5did, HDF5Constants.H5T_STD_I32LE, HDF5Constants.H5S_ALL, HDF5Constants.H5S_ALL,
                            HDF5Constants.H5P_DEFAULT, dset_data);
        }
        catch (Exception e) {
            e.printStackTrace();
        }

        _closeH5File();

        _openH5File(H5_FILE, "/dset");

        try {
            H5.H5export_dataset(EXPORT_FILE, H5fid, "/dset", 99);
        }
        catch (HDF5LibraryException err) {
            err.printStackTrace();
            fail("H5export_dataset failed: " + err);
        }

        File file = new File(EXPORT_FILE);

        try {
            Reader reader                   = new FileReader(EXPORT_FILE);
            StreamTokenizer streamTokenizer = new StreamTokenizer(reader);
            int indx                        = 0;
            int jndx                        = 0;
            while (streamTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
                if (streamTokenizer.ttype == StreamTokenizer.TT_NUMBER) {
                    dset_indata[indx][jndx] = (int)streamTokenizer.nval;
                    jndx++;
                    if (jndx >= DIM_Y) {
                        jndx = 0;
                        indx++;
                    }
                }
            }
            reader.close();
        }
        catch (IOException err) {
            err.printStackTrace();
            fail("read file failed: " + err);
        }
        for (int row = 0; row < DIM_X; row++)
            for (int col = 0; col < DIM_Y; col++) {
                assertTrue("H5export_dataset: <" + row + "," + col + ">" + dset_indata[row][col] + "=99",
                           dset_indata[row][col] == 99);
            }
        _deleteH5file();
    }

    @Test
    public void testH5export_region()
    {
        int[] dset_data_expect = {66,  69,  72,  75,  78,  81,  96,  99,  102, 105, 108, 111,
                                  126, 129, 132, 135, 138, 141, 156, 159, 162, 165, 168, 171,
                                  186, 189, 192, 195, 198, 201, 216, 219, 222, 225, 228, 231,
                                  207, 66,  252, 48,  84,  96,  12,  14,  213, 99};
        int[] dset_indata      = new int[DIM_BLKS + DIM_PNTS];
        String objName         = "/Dataset1";

        _openH5File(H5_REGION_FILE, objName);

        try {
            H5.H5export_dataset(EXPORT_REGION_FILE, H5fid, objName, 99);
        }
        catch (HDF5LibraryException err) {
            err.printStackTrace();
            fail("H5export_dataset failed: " + err);
        }

        File file = new File(EXPORT_REGION_FILE);

        try {
            Reader reader                   = new FileReader(EXPORT_REGION_FILE);
            StreamTokenizer streamTokenizer = new StreamTokenizer(reader);
            int indx                        = 0;
            while (streamTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
                if (streamTokenizer.ttype == StreamTokenizer.TT_NUMBER) {
                    dset_indata[indx] = (int)streamTokenizer.nval;
                    indx++;
                }
            }
            reader.close();
        }
        catch (IOException err) {
            err.printStackTrace();
            fail("read file failed: " + err);
        }
        for (int row = 0; row < DIM_X; row++)
            assertTrue("testH5export_region: <" + row + ">" + dset_indata[row],
                       dset_indata[row] == dset_data_expect[row]);
    }

    @Test
    public void testH5export_attribute()
    {
        int[] dset_data_expect = {0, 3, 6, 9, 1, 4, 7, 10, 2, 5, 8, 11};
        int[] dset_indata      = new int[DIM_ATTR];
        String objName         = "/Dataset3";

        _openH5File(H5_ATTR_FILE, objName);

        try {
            H5.H5export_dataset(EXPORT_ATTR_FILE, H5did, objName, 99);
        }
        catch (HDF5LibraryException err) {
            err.printStackTrace();
            fail("H5export_dataset failed: " + err);
        }

        File file = new File(EXPORT_ATTR_FILE);

        try {
            Reader reader                   = new FileReader(EXPORT_ATTR_FILE);
            StreamTokenizer streamTokenizer = new StreamTokenizer(reader);
            int indx                        = 0;
            int jndx                        = 0;
            while (streamTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
                if (streamTokenizer.ttype == StreamTokenizer.TT_NUMBER) {
                    dset_indata[indx] = (int)streamTokenizer.nval;
                    indx++;
                }
            }
            reader.close();
        }
        catch (IOException err) {
            err.printStackTrace();
            fail("read file failed: " + err);
        }
        for (int row = 0; row < DIM_X; row++)
            assertTrue("testH5export_attribute: <" + row + ">" + dset_indata[row],
                       dset_indata[row] == dset_data_expect[row]);
    }

    @Test
    public void testH5export_regdataset()
    {
        int[] dset_data_expect = {66,  69,  72,  75,  78,  81,  96,  99,  102, 105, 108, 111,
                                  126, 129, 132, 135, 138, 141, 156, 159, 162, 165, 168, 171,
                                  186, 189, 192, 195, 198, 201, 216, 219, 222, 225, 228, 231,
                                  207, 66,  252, 48,  84,  96,  12,  14,  213, 99};
        int[] dset_indata      = new int[DIM_BLKS + DIM_PNTS];
        String objName         = "/Dataset1";

        _openH5File(H5_DREG_FILE, objName);

        try {
            H5.H5export_dataset(EXPORT_DREG_FILE, H5fid, objName, 99);
        }
        catch (HDF5LibraryException err) {
            err.printStackTrace();
            fail("H5export_dataset failed: " + err);
        }

        File file = new File(EXPORT_DREG_FILE);

        try {
            Reader reader                   = new FileReader(EXPORT_DREG_FILE);
            StreamTokenizer streamTokenizer = new StreamTokenizer(reader);
            int indx                        = 0;
            while (streamTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
                if (streamTokenizer.ttype == StreamTokenizer.TT_NUMBER) {
                    dset_indata[indx] = (int)streamTokenizer.nval;
                    indx++;
                }
            }
            reader.close();
        }
        catch (IOException err) {
            err.printStackTrace();
            fail("read file failed: " + err);
        }
        for (int row = 0; row < DIM_X; row++)
            assertTrue("testH5export_regdataset: <" + row + ">" + dset_indata[row],
                       dset_indata[row] == dset_data_expect[row]);
    }

    @Test
    public void testH5export_attrdataset()
    {
        int[] dset_data_expect = {66,  69,  72,  75,  78,  81,  96,  99,  102, 105, 108, 111,
                                  126, 129, 132, 135, 138, 141, 156, 159, 162, 165, 168, 171,
                                  186, 189, 192, 195, 198, 201, 216, 219, 222, 225, 228, 231,
                                  207, 66,  252, 48,  84,  96,  12,  14,  213, 99};
        int[] dset_indata      = new int[DIM_BLKS + DIM_PNTS];
        String dsetName        = "/Dataset1";
        String objName         = "Attribute1";

        _openH5File(H5_AREG_FILE, dsetName);

        try {
            H5.H5export_attribute(EXPORT_AREG_FILE, H5did, objName, 99);
        }
        catch (HDF5LibraryException err) {
            err.printStackTrace();
            fail("H5export_attribute failed: " + err);
        }

        File file = new File(EXPORT_AREG_FILE);

        try {
            Reader reader                   = new FileReader(EXPORT_AREG_FILE);
            StreamTokenizer streamTokenizer = new StreamTokenizer(reader);
            int indx                        = 0;
            int jndx                        = 0;
            while (streamTokenizer.nextToken() != StreamTokenizer.TT_EOF) {
                if (streamTokenizer.ttype == StreamTokenizer.TT_NUMBER) {
                    dset_indata[indx] = (int)streamTokenizer.nval;
                    indx++;
                }
            }
            reader.close();
        }
        catch (IOException err) {
            err.printStackTrace();
            fail("read file failed: " + err);
        }
        for (int row = 0; row < DIM_X; row++)
            assertTrue("testH5export_attrdataset: <" + row + ">" + dset_indata[row],
                       dset_indata[row] == dset_data_expect[row]);
    }
}