/*-

 * Copyright (c) 2003-2007 Tim Kientzle

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 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 copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "test.h"

__FBSDID("$FreeBSD$");

/*

 * Test that "--help", "-h", and "-W help" options all work and

 * generate reasonable output.

 */

static int

in_first_line(const char *p, const char *substring)

{

	size_t l = strlen(substring);

	while (*p != '\0' && *p != '\n') {

		if (memcmp(p, substring, l) == 0)

			return (1);

		++p;

	}

	return (0);

}

DEFINE_TEST(test_option_help)

{

	int r;

	char *p;

	size_t plen;

	/* Exercise --help option. */

	r = systemf("%s --help >help.stdout 2>help.stderr", testprog);

	assertEqualInt(r, 0);

	failure("--help should generate nothing to stderr.");

	assertEmptyFile("help.stderr");

	/* Help message should start with name of program. */

	p = slurpfile(&plen, "help.stdout");

	failure("Help output should be long enough.");

	assert(plen >= 7);

	failure("First line of help output should contain string 'bsdcpio'");

	assert(in_first_line(p, "bsdcpio"));

	/*

	 * TODO: Extend this check to further verify that --help output

	 * looks approximately right.

	 */

	free(p);

	/* -h option should generate the same output. */

	r = systemf("%s -h >h.stdout 2>h.stderr", testprog);

	assertEqualInt(r, 0);

	failure("-h should generate nothing to stderr.");

	assertEmptyFile("h.stderr");

	failure("stdout should be same for -h and --help");

	assertEqualFile("h.stdout", "help.stdout");

	/* -W help should be another synonym. */

	r = systemf("%s -W help >Whelp.stdout 2>Whelp.stderr", testprog);

	assertEqualInt(r, 0);

	failure("-W help should generate nothing to stderr.");

	assertEmptyFile("Whelp.stderr");

	failure("stdout should be same for -W help and --help");

	assertEqualFile("Whelp.stdout", "help.stdout");

}