4 * SPDX-License-Identifier: BSD-3-Clause
6 * Copyright 2013 Google Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are
13 * * Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * * Neither the name of Google Inc. nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
25 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
26 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
27 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
28 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
37 * This plain test program mimics the structure and contents of its
38 * ATF-based counterpart. It attempts to represent various test cases
39 * in different separate functions and just calls them all from main().
41 * In reality, plain test programs can be much simpler. All they have
42 * to do is return 0 on success and non-0 otherwise.
51 snprintf__two_formatters(void)
55 if (snprintf(buffer, sizeof(buffer), "%s, %s!", "Hello",
57 errx(EXIT_FAILURE, "snprintf with two formatters failed");
59 if (strcmp(buffer, "Hello, tests!") != 0)
60 errx(EXIT_FAILURE, "Bad formatting: got %s", buffer);
64 snprintf__overflow(void)
68 if (snprintf(buffer, sizeof(buffer), "0123456789abcdef") != 16)
69 errx(EXIT_FAILURE, "snprintf did not return the expected "
70 "number of characters");
72 if (strcmp(buffer, "012345678") != 0)
73 errx(EXIT_FAILURE, "Bad formatting: got %s", buffer);
77 fprintf__simple_string(void)
82 const char *contents = "This is a message\n";
84 file = fopen("test.txt", "w+");
85 if (fprintf(file, "%s", contents) <= 0)
86 err(EXIT_FAILURE, "fprintf failed to write to file");
88 length = fread(buffer, 1, sizeof(buffer) - 1, file);
89 if (length != strlen(contents))
90 err(EXIT_FAILURE, "fread failed");
91 buffer[length] = '\0';
94 if (strcmp(buffer, contents) != 0)
95 errx(EXIT_FAILURE, "Written and read data differ");
97 /* Of special note here is that we are NOT deleting the temporary
98 * files we created in this test. Kyua takes care of this cleanup
99 * automatically and tests can (and should) rely on this behavior. */
105 /* If you have read the printf_test.c counterpart in the atf/
106 * directory, you may think that the sequencing of tests below and
107 * the exposed behavior to the user is very similar. But you'd be
110 * There are two major differences with this and the ATF version.
111 * The first is that the code below has no provisions to detect
112 * failures in one test and continue running the other tests: the
113 * first failure causes the whole test program to exit. The second
114 * is that this particular main() has no arguments: without ATF,
115 * all test programs may expose a different command-line interface,
116 * and this is an issue for consistency purposes. */
117 snprintf__two_formatters();
118 snprintf__overflow();
119 fprintf__simple_string();