2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
26 __FBSDID("$FreeBSD$");
29 * Test that "--help", "-h", and "-W help" options all work and
30 * generate reasonable output.
34 in_first_line(const char *p, const char *substring)
36 size_t l = strlen(substring);
38 while (*p != '\0' && *p != '\n') {
39 if (memcmp(p, substring, l) == 0)
46 DEFINE_TEST(test_help)
52 /* Exercise --help option. */
53 r = systemf("%s --help >help.stdout 2>help.stderr", testprog);
55 failure("--help should generate nothing to stderr.");
56 assertEmptyFile("help.stderr");
57 /* Help message should start with name of program. */
58 p = slurpfile(&plen, "help.stdout");
59 failure("Help output should be long enough.");
61 failure("First line of help output should contain 'bsdtar': %s", p);
62 assert(in_first_line(p, "bsdtar"));
64 * TODO: Extend this check to further verify that --help output
65 * looks approximately right.
69 /* -h option should generate the same output. */
70 r = systemf("%s -h >h.stdout 2>h.stderr", testprog);
72 failure("-h should generate nothing to stderr.");
73 assertEmptyFile("h.stderr");
74 failure("stdout should be same for -h and --help");
75 assertEqualFile("h.stdout", "help.stdout");
77 /* -W help should be another synonym. */
78 r = systemf("%s -W help >Whelp.stdout 2>Whelp.stderr", testprog);
80 failure("-W help should generate nothing to stderr.");
81 assertEmptyFile("Whelp.stderr");
82 failure("stdout should be same for -W help and --help");
83 assertEqualFile("Whelp.stdout", "help.stdout");