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: src/usr.bin/tar/test/test_help.c,v 1.2 2008/05/26 17:10:10 kientzle Exp $");
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");