1/*-
2 * Copyright (c) 2003-2007 Tim Kientzle
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25#include "test.h"
26
27/*
28 * Test that "--help", "-h", and "-W help" options all work and
29 * generate reasonable output.
30 */
31
32static int
33in_first_line(const char *p, const char *substring)
34{
35	size_t l = strlen(substring);
36
37	while (*p != '\0' && *p != '\n') {
38		if (memcmp(p, substring, l) == 0)
39			return (1);
40		++p;
41	}
42	return (0);
43}
44
45DEFINE_TEST(test_help)
46{
47	int r;
48	char *p;
49	size_t plen;
50
51	/* Exercise --help option. */
52	r = systemf("%s --help >help.stdout 2>help.stderr", testprog);
53	assertEqualInt(r, 0);
54	failure("--help should generate nothing to stderr.");
55	assertEmptyFile("help.stderr");
56	/* Help message should start with name of program. */
57	p = slurpfile(&plen, "help.stdout");
58	failure("Help output should be long enough.");
59	assert(plen >= 6);
60	failure("First line of help output should contain 'bsdcat': %s", p);
61	assert(in_first_line(p, "bsdcat"));
62	/*
63	 * TODO: Extend this check to further verify that --help output
64	 * looks approximately right.
65	 */
66	free(p);
67
68	/* -h option should generate the same output. */
69	r = systemf("%s -h >h.stdout 2>h.stderr", testprog);
70	assertEqualInt(r, 0);
71	failure("-h should generate nothing to stderr.");
72	assertEmptyFile("h.stderr");
73	failure("stdout should be same for -h and --help");
74	assertEqualFile("h.stdout", "help.stdout");
75}
76