hdf5/c++/test/tdspl.cpp

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*****************************************************************************
   FILE
   tdspl.cpp - HDF5 C++ testing the dataset memory and transfer property
               list functionality

 ***************************************************************************/
#include <iostream>
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 FILENAME("tdatatransform.h5");

static void
test_transfplist()
{
    const char *c_to_f = "(9/5.0)*x + 32";
    const char *simple = "(4/2) * ( (2 + 4)/(5 - 2.5))"; /* this equals 4.8 */
    /* inverses the utrans transform in init_test to get back original array */
    const char *utrans_inv = "(x/3)*4 - 100";

    SUBTEST("DSetMemXferPropList::set/getDataTransform()");
    try {
        // Create various data set prop lists and set data transform expression.
        DSetMemXferPropList dxpl_c_to_f(c_to_f);

        DSetMemXferPropList dxpl_simple;
        dxpl_simple.setDataTransform(simple);

        DSetMemXferPropList dxpl_utrans_inv;
        dxpl_utrans_inv.setDataTransform(utrans_inv);

        //
        // Make a copy of one of those prop lists then read the data transform
        // expression and verify that it's the same as the original.
        //

        // Copy the prop list.
        DSetMemXferPropList dxpl_c_to_f_copy;
        dxpl_c_to_f_copy.copy(dxpl_c_to_f);

        // Find out the length of the transform expression, allocate the buffer
        // for it, then read and verify the expression from the copied plist
        ssize_t tran_len    = dxpl_c_to_f_copy.getDataTransform(NULL);
        char *  c_to_f_read = static_cast<char *>(HDmalloc(tran_len + 1));
        HDmemset(c_to_f_read, 0, tran_len + 1);
        dxpl_c_to_f_copy.getDataTransform(c_to_f_read, tran_len + 1);
        verify_val(const_cast<const char *>(c_to_f_read), const_cast<const char *>(c_to_f),
                   "DSetMemXferPropList::getDataTransform", __LINE__, __FILE__);
        HDfree(c_to_f_read);

        //
        // Read the expression of each of the prop lists and verify the read
        // expression
        //

        // Get and verify the expression with:
        // ssize_t getDataTransform(char* exp, const size_t buf_size [default=0])
        tran_len    = dxpl_c_to_f.getDataTransform(NULL);
        c_to_f_read = static_cast<char *>(HDmalloc(tran_len + 1));
        HDmemset(c_to_f_read, 0, tran_len + 1);
        dxpl_c_to_f.getDataTransform(c_to_f_read, tran_len + 1);
        verify_val(const_cast<const char *>(c_to_f_read), const_cast<const char *>(c_to_f),
                   "DSetMemXferPropList::getDataTransform", __LINE__, __FILE__);
        HDfree(c_to_f_read);

        // Get and verify the expression with:
        // H5std_string DSetMemXferPropList::getDataTransform()
        H5std_string simple_read = dxpl_simple.getDataTransform();
        verify_val(const_cast<const char *>(simple_read.c_str()), const_cast<const char *>(simple),
                   "DSetMemXferPropList::getDataTransform", __LINE__, __FILE__);

        // Get and verify the expression with:
        // ssize_t getDataTransform(char* exp, const size_t buf_size)
        tran_len              = dxpl_utrans_inv.getDataTransform(NULL, 0);
        char *utrans_inv_read = static_cast<char *>(HDmalloc(tran_len + 1));
        HDmemset(utrans_inv_read, 0, tran_len + 1);
        dxpl_utrans_inv.getDataTransform(utrans_inv_read, tran_len + 1);
        verify_val(const_cast<const char *>(utrans_inv_read), const_cast<const char *>(utrans_inv),
                   "DSetMemXferPropList::getDataTransform", __LINE__, __FILE__);
        HDfree(utrans_inv_read);

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

/*-------------------------------------------------------------------------
 * Function:    test_dsproplist
 *
 * Purpose      Main dataset property list testing routine
 *
 * Return       None
 *-------------------------------------------------------------------------
 */
extern "C" void
test_dsproplist()
{
    // Output message about test being performed
    MESSAGE(5, ("Testing Generic Dataset Property Lists\n"));

    test_transfplist(); // test set/getDataTransform()

} // test_dsproplist()

/*-------------------------------------------------------------------------
 * Function:    cleanup_dsproplist
 *
 * Purpose      Cleanup temporary test files
 *
 * Return       none
 *-------------------------------------------------------------------------
 */
extern "C" void
cleanup_dsproplist()
{
    HDremove(FILENAME.c_str());
}