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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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://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.HDF5Exception;
import hdf.hdf5lib.exceptions.HDF5LibraryException;

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

public class TestH5R {
    @Rule public TestName testname = new TestName();
    private static final String H5_FILE = "testH5R.h5";
    private static final int DIM_X = 4;
    private static final int DIM_Y = 6;
    long H5fid = -1;
    long H5dsid = -1;
    long H5did = -1;
    long H5gid = -1;
    long H5did2 = -1;
    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 = -1;
        try {
            did = H5.H5Dcreate(fid, name,
                        HDF5Constants.H5T_STD_I32BE, dsid,
                        HDF5Constants.H5P_DEFAULT, HDF5Constants.H5P_DEFAULT, dapl);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Dcreate: " + err);
        }
        assertTrue("TestH5R._createDataset: ",did > 0);

        return did;
    }

    private final long _createGroup(long fid, String name) {
        long gid = -1;
        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("TestH5R._createGroup: ",gid > 0);

        return gid;
    }

    @Before
    public void createH5file()
            throws NullPointerException, HDF5Exception {
        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);
            H5dsid = H5.H5Screate_simple(2, H5dims, null);
            H5gid = _createGroup(H5fid, "Group1");
            H5did2 = _createDataset(H5gid, H5dsid, "dset2", HDF5Constants.H5P_DEFAULT);
            H5did = _createDataset(H5fid, H5dsid, "dset", HDF5Constants.H5P_DEFAULT);

        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5R.createH5file: " + err);
        }
        assertTrue("TestH5R.createH5file: H5.H5Fcreate: ",H5fid > 0);
        assertTrue("TestH5R.createH5file: H5.H5Screate_simple: ",H5dsid > 0);
        assertTrue("TestH5R.createH5file: _createDataset: ",H5did > 0);

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

    @After
    public void deleteH5file() throws HDF5LibraryException {
        if (H5dsid > 0)
            try {H5.H5Sclose(H5dsid);} catch (Exception ex) {}
        if (H5did > 0)
            try {H5.H5Dclose(H5did);} catch (Exception ex) {}
        if (H5fid > 0)
            try {H5.H5Fclose(H5fid);} catch (Exception ex) {}
        if (H5gid > 0)
            try {H5.H5Gclose(H5gid);} catch (Exception ex) {}
        if (H5did2 > 0)
            try {H5.H5Dclose(H5did2);} catch (Exception ex) {}

        _deleteFile(H5_FILE);
        System.out.println();
    }

    @Test
    public void testH5Rget_name() {
        long loc_id=H5fid;
        int ref_type=HDF5Constants.H5R_OBJECT;
        long ret_val=-1;
        byte[] ref=null;
        String[] name= {""};
        String objName = "/dset";

        try {
            ref = H5.H5Rcreate(H5fid, objName, ref_type, -1);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Rget_name:H5Rcreate " + err);
        }

        try {
            ret_val = H5.H5Rget_name(loc_id, ref_type, ref, name, 16);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Rget_name: " + err);
        }

        assertTrue("testH5Rget_name: H5Rget_name", ret_val>0);
        assertTrue("The name of the object: ", objName.equals(name[0]));
    }

    @Test
    public void testH5Rget_obj_type2() {
        int  ref_type=HDF5Constants.H5R_OBJECT;
        byte[] ref=null;

        String objName = "/dset";
        int obj_type = -1;;

        try {
            ref = H5.H5Rcreate(H5fid, objName, ref_type, -1);
        }
        catch(Throwable err) {
            err.printStackTrace();
        }

        try {
            obj_type = H5.H5Rget_obj_type(H5fid, HDF5Constants.H5R_OBJECT, ref);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Rget_obj_type2: " + err);
        }
        assertEquals(obj_type, HDF5Constants.H5O_TYPE_DATASET);
    }

    @Test
    public void testH5Rcreate_refobj() {
        byte[] ref = null;

        try {
            ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_OBJECT, -1);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Rcreate: " + err);
        }
        assertNotNull(ref);
    }

    @Test
    public void testH5Rcreate_regionrefobj() {
        byte[] ref = null;
        try {
            ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_DATASET_REGION, H5dsid);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("H5.H5Rcreate: " + err);
        }
        assertNotNull(ref);
    }

    @Test
    public void testH5Rdereference() {
        byte[] ref1 = null;
        byte[] ref2 = null;
        long dataset_id = -1;
        long group_id = -1;
        try {
            //Create reference on dataset
            ref1 = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_DATASET_REGION, H5dsid);
            dataset_id= H5.H5Rdereference(H5fid, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_DATASET_REGION, ref1);

            //Create reference on group
            ref2 = H5.H5Rcreate(H5gid, "/Group1", HDF5Constants.H5R_OBJECT, -1);
            group_id= H5.H5Rdereference(H5gid, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_OBJECT, ref2);
            assertNotNull(ref1);
            assertNotNull(ref2);
            assertTrue(dataset_id>=0);
            assertTrue(group_id>=0);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5Rdereference " + err);
        }
        finally {
            try {H5.H5Dclose(dataset_id);} catch (Exception ex) {}
            try {H5.H5Gclose(group_id);} catch (Exception ex) {}
        }
    }

    @Test
    public void testH5Rget_region() {
        byte[] ref = null;
        long dsid = -1;
        try {
            ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_DATASET_REGION, H5dsid);
            dsid = H5.H5Rget_region(H5fid, HDF5Constants.H5R_DATASET_REGION, ref);
            assertNotNull(ref);
            assertTrue(dsid>=0);
        }
        catch (Throwable err) {
            err.printStackTrace();
            fail("TestH5Rget_region: " + err);
        }
        finally {
            try {H5.H5Sclose(dsid);} catch (Exception ex) {}
        }
    }

    @Test(expected = IllegalArgumentException.class)
    public void testH5Rget_name_Invalidreftype() throws Throwable {
        byte[] ref = null;
        String[] name= {""};
        ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_OBJECT, -1);
        H5.H5Rget_name(H5fid, HDF5Constants.H5R_DATASET_REGION, ref, name, 16);
    }

    @Test(expected = NullPointerException.class)
    public void testH5Rget_name_NULLreference() throws Throwable {
        byte[] ref = null;
        String[] name= {""};
        H5.H5Rget_name(H5fid, HDF5Constants.H5R_OBJECT, ref, name, 16);
    }

    @Test(expected = HDF5LibraryException.class)
    public void testH5Rget_obj_type2_Invalidreftype() throws Throwable {
        byte[] ref = null;
        ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_OBJECT, -1);
        H5.H5Rget_obj_type(H5fid, HDF5Constants.H5R_DATASET_REGION, ref);
    }

    @Test(expected = HDF5LibraryException.class)
    public void testH5Rcreate_InvalidObjectName() throws Throwable {
         H5.H5Rcreate(H5fid, "/GROUPS", HDF5Constants.H5R_OBJECT, -1);
    }

    @Test(expected = HDF5LibraryException.class)
    public void testH5Rcreate_Invalidspace_id() throws Throwable {
         H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_DATASET_REGION, -1);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testH5Rcreate_Invalidreftype() throws Throwable {
        H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_BADTYPE, -1);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testH5Rgetregion_Invalidreftype() throws Throwable {
        byte[] ref = null;
        ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_OBJECT, H5dsid);
        H5.H5Rget_region(H5fid, HDF5Constants.H5R_DATASET_REGION, ref);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testH5Rgetregion_Badreferencetype() throws Throwable {
        byte[] ref = null;
        ref = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_OBJECT, H5dsid);
        H5.H5Rget_region(H5fid, HDF5Constants.H5R_OBJECT, ref);
    }

    @Test(expected = NullPointerException.class)
    public void testH5Rgetregion_Nullreference() throws Throwable {
        byte[] ref = null;
        H5.H5Rget_region(H5fid, HDF5Constants.H5R_DATASET_REGION, ref);
    }

    @Test(expected = NullPointerException.class)
    public void testH5Rdereference_Nullreference() throws Throwable {
        byte[] ref = null;
        H5.H5Rdereference(H5did2, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_OBJECT, ref);
    }

    @Test(expected = IllegalArgumentException.class)
    public void testH5Rdereference_Invalidreference() throws Throwable {
        byte[] ref1 = null;
        byte[] ref2 = null;
        ref1 = H5.H5Rcreate(H5fid, "/dset", HDF5Constants.H5R_DATASET_REGION, H5dsid);
        ref2 = H5.H5Rcreate(H5gid, "/Group1", HDF5Constants.H5R_OBJECT, -1);
        H5.H5Rdereference(H5gid, HDF5Constants.H5P_DEFAULT, HDF5Constants.H5R_OBJECT, ref1);
    }

}