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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.File;

import hdf.hdf5lib.H5;
import hdf.hdf5lib.HDF5Constants;
import hdf.hdf5lib.exceptions.HDF5LibraryException;
import hdf.hdf5lib.structs.H5G_info_t;
import hdf.hdf5lib.structs.H5O_token_t;

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

public class TestH5G {
    @Rule
    public TestName testname              = new TestName();
    private static final String H5_FILE   = "testG.h5";
    private static final String H5_FILE2  = "testG2.h5";
    private static final String[] GROUPS  = {"/G1",          "/G1/G11",      "/G1/G12",     "/G1/G11/G111",
                                            "/G1/G11/G112", "/G1/G11/G113", "/G1/G11/G114"};
    private static final String[] GROUPS2 = {"/G1", "/G1/G14", "/G1/G12", "/G1/G13", "/G1/G11"};
    long H5fid                            = HDF5Constants.H5I_INVALID_HID;
    long H5fid2                           = HDF5Constants.H5I_INVALID_HID;

    private final long _createGroup(long fid, String name)
    {
        long gid = HDF5Constants.H5I_INVALID_HID;
        try {
            gid = H5.H5Gcreate(fid, name, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT,
                               HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Gcreate: " + err);
        }
        assertTrue("TestH5G._createGroup: ", gid > 0);

        return gid;
    }

    private final long _createGroup2(long fid, String name)
    {
        long gid  = HDF5Constants.H5I_INVALID_HID;
        long gcpl = HDF5Constants.H5I_INVALID_HID;
        try {
            gcpl = H5.H5Pcreate(HDF5Constants.H5P_GROUP_CREATE); // create gcpl
        }
        catch (final Exception ex) {
            fail("H5.H5Pcreate(): " + ex);
        }
        assertTrue("TestH5G._createGroup2: ", gcpl >= 0);
        try {
            H5.H5Pset_link_creation_order(gcpl,
                                          HDF5Constants.H5P_CRT_ORDER_TRACKED +
                                              HDF5Constants.H5P_CRT_ORDER_INDEXED); // Set link creation order
        }
        catch (final Exception ex) {
            try {
                H5.H5Pclose(gcpl);
            }
            catch (final Exception exx) {
            }
            fail("H5.H5Pset_link_creation_order: " + ex);
        }
        try {
            gid = H5.H5Gcreate(fid, name, HDF5Constants.H5P_DEFAULT, gcpl, HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Gcreate: " + err);
        }
        finally {
            try {
                H5.H5Pclose(gcpl);
            }
            catch (final Exception ex) {
            }
        }
        assertTrue("TestH5G._createGroup2: ", gid > 0);

        return gid;
    }

    private final long _openGroup(long fid, String name)
    {
        long gid = HDF5Constants.H5I_INVALID_HID;
        try {
            gid = H5.H5Gopen(fid, name, HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            gid = HDF5Constants.H5I_INVALID_HID;
            err.printStackTrace();
            fail("H5.H5Gopen: " + err);
        }
        assertTrue("TestH5G._openGroup: ", gid > 0);

        return gid;
    }

    private final void _deleteFile(String filename)
    {
        File file = new File(filename);

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

    @Before
    public void createH5file() throws HDF5LibraryException, NullPointerException
    {
        assertTrue("H5 open ids is 0", H5.getOpenIDCount() == 0);
        System.out.print(testname.getMethodName());

        try {
            H5fid = H5.H5Fcreate(H5_FILE, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
                                 HDF5Constants.H5P_DEFAULT);

            H5fid2 = H5.H5Fcreate(H5_FILE2, HDF5Constants.H5F_ACC_TRUNC, HDF5Constants.H5P_DEFAULT,
                                  HDF5Constants.H5P_DEFAULT);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.createH5file: " + err);
        }
        assertTrue("TestH5G.createH5file: H5.H5Fcreate: ", H5fid > 0);
        assertTrue("TestH5G.createH5file: H5.H5Fcreate: ", H5fid2 > 0);

        long gid = HDF5Constants.H5I_INVALID_HID;

        for (int i = 0; i < GROUPS.length; i++) {
            gid = _createGroup(H5fid, GROUPS[i]);
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }

        for (int i = 0; i < GROUPS2.length; i++) {
            gid = _createGroup2(H5fid2, GROUPS2[i]);
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }

        H5.H5Fflush(H5fid, HDF5Constants.H5F_SCOPE_LOCAL);
        H5.H5Fflush(H5fid2, HDF5Constants.H5F_SCOPE_LOCAL);
    }

    @After
    public void deleteH5file() throws HDF5LibraryException
    {
        if (H5fid > 0) {
            try {
                H5.H5Fclose(H5fid);
            }
            catch (Exception ex) {
            }
        }
        if (H5fid2 > 0) {
            try {
                H5.H5Fclose(H5fid2);
            }
            catch (Exception ex) {
            }
        }
        _deleteFile(H5_FILE);
        _deleteFile(H5_FILE2);
        System.out.println();
    }

    @Test
    public void testH5Gopen()
    {
        long gid = HDF5Constants.H5I_INVALID_HID;
        for (int i = 0; i < GROUPS.length; i++) {
            try {
                gid = H5.H5Gopen(H5fid, GROUPS[i], HDF5Constants.H5P_DEFAULT);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gopen: H5.H5Gopen: " + err);
            }
            assertTrue("TestH5G.testH5Gopen: ", gid > 0);
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }
    }

    @Test
    public void testH5Gget_create_plist()
    {
        long gid = HDF5Constants.H5I_INVALID_HID;
        long pid = HDF5Constants.H5I_INVALID_HID;

        for (int i = 0; i < GROUPS.length; i++) {
            try {
                gid = H5.H5Gopen(H5fid, GROUPS[i], HDF5Constants.H5P_DEFAULT);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_create_plist: H5.H5Gopen: " + err);
            }
            assertTrue("TestH5G.testH5Gget_create_plist: ", gid > 0);

            try {
                pid = H5.H5Gget_create_plist(gid);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_create_plist: H5.H5Gget_create_plist: " + err);
            }
            assertTrue("TestH5G.testH5Gget_create_plist: ", pid > 0);

            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }
    }

    @Test
    public void testH5Gget_info()
    {
        H5G_info_t info = null;

        for (int i = 0; i < GROUPS.length; i++) {

            try {
                info = H5.H5Gget_info(H5fid);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_info: H5.H5Gget_info: " + err);
            }
            assertNotNull("TestH5G.testH5Gget_info: ", info);
        }
    }

    @Test
    public void testH5Gget_info_by_name()
    {
        H5G_info_t info = null;

        for (int i = 0; i < GROUPS.length; i++) {
            try {
                info = H5.H5Gget_info_by_name(H5fid, GROUPS[i], HDF5Constants.H5P_DEFAULT);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_info_by_name: H5.H5Gget_info_by_name: " + err);
            }
            assertNotNull("TestH5G.testH5Gget_info_by_name: ", info);
        }
    }

    @Test
    public void testH5Gget_info_by_idx()
    {
        H5G_info_t info = null;
        for (int i = 0; i < 2; i++) {
            try {
                info = H5.H5Gget_info_by_idx(H5fid, "/G1", HDF5Constants.H5_INDEX_NAME,
                                             HDF5Constants.H5_ITER_INC, i, HDF5Constants.H5P_DEFAULT);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_info_by_idx: H5.H5Gget_info_by_idx: " + err);
            }
            assertNotNull("TestH5G.testH5Gget_info_by_idx: ", info);
        }
    }

    @Test
    public void testH5Gget_obj_info_all()
    {
        H5G_info_t info = null;

        long gid = _openGroup(H5fid, GROUPS[0]);

        try {
            info = H5.H5Gget_info(gid);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all: H5.H5Gget_info: " + err);
        }
        finally {
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }
        assertNotNull("TestH5G.testH5Gget_obj_info_all: ", info);
        assertTrue("TestH5G.testH5Gget_obj_info_all: number of links is empty", info.nlinks > 0);
        String objNames[]       = new String[(int)info.nlinks];
        int objTypes[]          = new int[(int)info.nlinks];
        int lnkTypes[]          = new int[(int)info.nlinks];
        H5O_token_t objTokens[] = new H5O_token_t[(int)info.nlinks];

        int names_found = 0;
        try {
            names_found = H5.H5Gget_obj_info_all(H5fid, GROUPS[0], objNames, objTypes, lnkTypes, objTokens,
                                                 HDF5Constants.H5_INDEX_NAME);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all: H5.H5Gget_obj_info_all: " + err);
        }

        assertTrue("number found[" + names_found + "] different than expected[" + objNames.length + "]",
                   names_found == objNames.length);
        for (int i = 0; i < objNames.length; i++) {
            assertNotNull("name #" + i + " does not exist", objNames[i]);
            assertTrue("TestH5G.testH5Gget_obj_info_all: ", objNames[i].length() > 0);
        }
    }

    @Test
    public void testH5Gget_obj_info_all_gid()
    {
        H5G_info_t info = null;

        long gid = _openGroup(H5fid, GROUPS[0]);

        try {
            info = H5.H5Gget_info(gid);
            assertNotNull("TestH5G.testH5Gget_obj_info_all_gid: ", info);
            assertTrue("TestH5G.testH5Gget_obj_info_all_gid: number of links is empty", info.nlinks > 0);
            String objNames[]       = new String[(int)info.nlinks];
            H5O_token_t objTokens[] = new H5O_token_t[(int)info.nlinks];
            int lnkTypes[]          = new int[(int)info.nlinks];
            int objTypes[]          = new int[(int)info.nlinks];

            int names_found = 0;
            try {
                names_found = H5.H5Gget_obj_info_all(gid, null, objNames, objTypes, lnkTypes, objTokens,
                                                     HDF5Constants.H5_INDEX_NAME);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_obj_info_all_gid: H5.H5Gget_obj_info_all: " + err);
            }

            assertTrue("TestH5G.testH5Gget_obj_info_all_gid: number found[" + names_found +
                           "] different than expected[" + objNames.length + "]",
                       names_found == objNames.length);
            for (int i = 0; i < objNames.length; i++) {
                assertNotNull("TestH5G.testH5Gget_obj_info_all_gid: name #" + i + " does not exist",
                              objNames[i]);
                assertTrue("TestH5G.testH5Gget_obj_info_all_gid: ", objNames[i].length() > 0);
            }
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all_gid: H5.H5Gget_info: " + err);
        }
        finally {
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }
    }

    @Test
    public void testH5Gget_obj_info_all_gid2()
    {
        H5G_info_t info = null;

        long gid = _openGroup(H5fid, GROUPS[1]);

        try {
            info = H5.H5Gget_info(gid);
            assertNotNull("TestH5G.testH5Gget_obj_info_all_gid2: ", info);
            assertTrue("TestH5G.testH5Gget_obj_info_all_gid2: number of links is empty", info.nlinks > 0);
            String objNames[]       = new String[(int)info.nlinks];
            H5O_token_t objTokens[] = new H5O_token_t[(int)info.nlinks];
            int lnkTypes[]          = new int[(int)info.nlinks];
            int objTypes[]          = new int[(int)info.nlinks];

            int names_found = 0;
            try {
                names_found = H5.H5Gget_obj_info_all(gid, null, objNames, objTypes, lnkTypes, objTokens,
                                                     HDF5Constants.H5_INDEX_NAME);
            }
            catch (Throwable err) {
                err.printStackTrace();
                fail("TestH5G.testH5Gget_obj_info_all_gid2: H5.H5Gget_obj_info_all: " + err);
            }

            assertTrue("TestH5G.testH5Gget_obj_info_all_gid2: number found[" + names_found +
                           "] different than expected[" + objNames.length + "]",
                       names_found == objNames.length);
            for (int i = 0; i < objNames.length; i++) {
                assertNotNull("TestH5G.testH5Gget_obj_info_all_gid2: name #" + i + " does not exist",
                              objNames[i]);
                assertTrue("TestH5G.testH5Gget_obj_info_all_gid2: ", objNames[i].length() > 0);
            }
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all_gid2: H5.H5Gget_info: " + err);
        }
        finally {
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }
    }

    @Test
    public void testH5Gget_obj_info_max()
    {
        long gid                = _openGroup(H5fid, GROUPS[0]);
        long groups_max_size    = GROUPS.length + 1;
        String objNames[]       = new String[(int)groups_max_size];
        int objTypes[]          = new int[(int)groups_max_size];
        int lnkTypes[]          = new int[(int)groups_max_size];
        H5O_token_t objTokens[] = new H5O_token_t[(int)groups_max_size];

        int names_found = 0;
        try {
            names_found =
                H5.H5Gget_obj_info_max(gid, objNames, objTypes, lnkTypes, objTokens, groups_max_size);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_max: H5.H5Gget_obj_info_max: " + err);
        }
        finally {
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }

        // expected number does not include root group
        assertTrue("TestH5G.testH5Gget_obj_info_max: number found[" + names_found +
                       "] different than expected[" + (GROUPS.length - 1) + "]",
                   names_found == (GROUPS.length - 1));
        for (int i = 0; i < GROUPS.length - 1; i++) {
            assertNotNull("TestH5G.testH5Gget_obj_info_max: name #" + i + " does not exist", objNames[i]);
            assertTrue("TestH5G.testH5Gget_obj_info_max: ", objNames[i].length() > 0);
        }
    }

    @Test
    public void testH5Gget_obj_info_max_limit()
    {
        long gid                = _openGroup(H5fid, GROUPS[0]);
        long groups_max_size    = GROUPS.length - 3;
        String objNames[]       = new String[(int)groups_max_size];
        int objTypes[]          = new int[(int)groups_max_size];
        int lnkTypes[]          = new int[(int)groups_max_size];
        H5O_token_t objTokens[] = new H5O_token_t[(int)groups_max_size];

        int names_found = 0;
        try {
            names_found =
                H5.H5Gget_obj_info_max(gid, objNames, objTypes, lnkTypes, objTokens, groups_max_size);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_max_limit: H5.H5Gget_obj_info_max: " + err);
        }
        finally {
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }

        assertTrue("TestH5G.testH5Gget_obj_info_max_limit: number found[" + names_found +
                       "] different than expected[" + groups_max_size + "]",
                   names_found == groups_max_size);
        for (int i = 0; i < objNames.length; i++) {
            assertNotNull("TestH5G.testH5Gget_obj_info_max_limit: name #" + i + " does not exist",
                          objNames[i]);
            assertTrue("TestH5G.testH5Gget_obj_info_max_limit: ", objNames[i].length() > 0);
        }
    }

    @Test
    public void testH5Gget_obj_info_all_byIndexType()
    {
        H5G_info_t info = null;

        long gid = _openGroup(H5fid2, GROUPS2[0]);

        try {
            info = H5.H5Gget_info(gid);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all_byIndexType: H5.H5Gget_info: " + err);
        }
        finally {
            try {
                H5.H5Gclose(gid);
            }
            catch (Exception ex) {
            }
        }

        assertNotNull("TestH5G.testH5Gget_obj_info_all_byIndexType: ", info);
        assertTrue("TestH5G.testH5Gget_obj_info_all_byIndexType: number of links is empty", info.nlinks > 0);
        String objNames[]       = new String[(int)info.nlinks];
        int objTypes[]          = new int[(int)info.nlinks];
        int lnkTypes[]          = new int[(int)info.nlinks];
        H5O_token_t objTokens[] = new H5O_token_t[(int)info.nlinks];

        try {
            H5.H5Gget_obj_info_all(H5fid2, GROUPS2[0], objNames, objTypes, lnkTypes, objTokens,
                                   HDF5Constants.H5_INDEX_CRT_ORDER);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all_byIndexType: H5.H5Gget_obj_info_all: " + err);
        }

        assertEquals("G12", objNames[1]);
        assertEquals("G13", objNames[2]);
        assertEquals("G11", objNames[3]);

        try {
            H5.H5Gget_obj_info_all(H5fid2, GROUPS2[0], objNames, objTypes, lnkTypes, objTokens,
                                   HDF5Constants.H5_INDEX_NAME);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5G.testH5Gget_obj_info_all_byIndexType: H5.H5Gget_obj_info_all: " + err);
        }

        assertEquals("G12", objNames[1]);
        assertEquals("G13", objNames[2]);
        assertEquals("G14", objNames[3]);
    }
}