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 32 static int 33 in_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 45 DEFINE_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