sortix--sortix/regress/test-fmemopen.c

/*
 * Copyright (c) 2014 Jonas 'Sortie' Termansen.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * test-fmemopen.c
 * Tests basic fmemopen() usage.
 */

#include <stdio.h>
#include <string.h>

#include "test.h"

int main(void)
{
	const char* string = "VYl/plYoFGAg2";
	size_t string_length = strlen(string);

	FILE* fp;
	int c;

	unsigned char* buffer = (unsigned char*) string;
	size_t buffer_size = string_length;

	if ( !(fp = fmemopen(buffer, buffer_size, "r")) )
		test_error(errno, "fmemopen");

	for ( size_t i = 0; i < buffer_size; i++ )
	{
		c = fgetc(fp);
		test_assert(!(c == EOF && feof(fp)));
		test_assert(!(c == EOF && ferror(fp)));
		test_assert(c != EOF);
		test_assert((unsigned char) c == buffer[i]);
		test_assert(!feof(fp));
		test_assert(!ferror(fp));
	}

	c = fgetc(fp);
	test_assert(c == EOF);
	test_assert(!ferror(fp));
	test_assert(feof(fp));

	fclose(fp);

	return 0;
}