2 * Copyright (c) 2003-2007 Tim Kientzle
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28 * Test that "--help", "-h", and "-W help" options all work and
29 * generate reasonable output.
33 in_first_line(const char *p, const char *substring)
35 size_t l = strlen(substring);
37 while (*p != '\0' && *p != '\n') {
38 if (memcmp(p, substring, l) == 0)
45 DEFINE_TEST(test_help)
51 /* Exercise --help option. */
52 r = systemf("%s --help >help.stdout 2>help.stderr", testprog);
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.");
60 failure("First line of help output should contain 'bsdcat': %s", p);
61 assert(in_first_line(p, "bsdcat"));
63 * TODO: Extend this check to further verify that --help output
64 * looks approximately right.
68 /* -h option should generate the same output. */
69 r = systemf("%s -h >h.stdout 2>h.stderr", testprog);
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");