test-wchar.c

/*
* SPDX-License-Identifier: BSD-3-Clause
* 
* Copyright © 2024, Synopsys Inc.
* Copyright © 2024, Solid Sands B.V.
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* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
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*/

#include <stdio.h>
#include <wchar.h>


const wchar_t *string = L"Hello\n";

int main (void)
{
    FILE *file;
    const wchar_t *ref;
	wint_t res;

    /* Create testfile.dat in write mode */
    file = fopen("testfile.dat", "w");
    if (file == NULL) return 1;
    
    /* Write wide characters to the file */
    fputws(string, file);
	fclose(file);
    
    /* Open testfile.dat in read mode */
    file = fopen("testfile.dat", "r");

	for (ref = string; *ref != L'\0'; ref++) {
        
        /* Read wide-char by wide-char from the file */
		res = fgetwc(file);
        if((wchar_t) res != *ref) {
            printf("Test Failed: Failed to read wide character from file\n");
            return 1;
        }
	}

    if(fgetwc(file) != WEOF) {
        printf("Test Failed: Failed to check if end-of-file reached\n");
        return 1;    
    }
    
    printf("Test Passed: Wide characters were written & read successfuly\n");
    return 0;
}