2 * Copyright (c) 2004 Nik Clayton
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
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21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 #include <ccan/compiler/compiler.h>
29 * plan_tests - announce the number of tests you plan to run
30 * @tests: the number of tests
32 * This should be the first call in your test program: it allows tracing
33 * of failures which mean that not all tests are run.
35 * If you don't know how many tests will actually be run, assume all of them
36 * and use skip() if you don't actually run some tests.
41 void plan_tests(unsigned int tests);
43 #if (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L) && !defined(__GNUC__)
44 # error "Needs gcc or C99 compiler for variadic macros."
48 * ok1 - Simple conditional test
49 * @e: the expression which we expect to be true.
51 * This is the simplest kind of test: if the expression is true, the
52 * test passes. The name of the test which is printed will simply be
53 * file name, line number, and the expression itself.
56 * ok1(somefunc() == 1);
58 # define ok1(e) ((e) ? \
59 _gen_result(1, __func__, __FILE__, __LINE__, "%s", #e) : \
60 _gen_result(0, __func__, __FILE__, __LINE__, "%s", #e))
63 * ok - Conditional test with a name
64 * @e: the expression which we expect to be true.
65 * @...: the printf-style name of the test.
67 * If the expression is true, the test passes. The name of the test will be
68 * the filename, line number, and the printf-style string. This can be clearer
69 * than simply the expression itself.
72 * ok1(somefunc() == 1);
73 * ok(somefunc() == 0, "Second somefunc() should fail");
75 # define ok(e, ...) ((e) ? \
76 _gen_result(1, __func__, __FILE__, __LINE__, \
78 _gen_result(0, __func__, __FILE__, __LINE__, \
82 * pass - Note that a test passed
83 * @...: the printf-style name of the test.
85 * For complicated code paths, it can be easiest to simply call pass() in one
86 * branch and fail() in another.
91 * pass("somefunc() returned a valid value");
93 * fail("somefunc() returned an invalid value");
95 # define pass(...) ok(1, __VA_ARGS__)
98 * fail - Note that a test failed
99 * @...: the printf-style name of the test.
101 * For complicated code paths, it can be easiest to simply call pass() in one
102 * branch and fail() in another.
104 # define fail(...) ok(0, __VA_ARGS__)
106 /* I don't find these to be useful. */
107 # define skip_if(cond, n, ...) \
108 if (cond) skip((n), __VA_ARGS__); \
111 # define skip_start(test, n, ...) \
114 skip(n, __VA_ARGS__); \
118 # define skip_end } while(0)
120 unsigned int _gen_result(int, const char *, const char *, unsigned int,
121 const char *, ...) PRINTF_FMT(5, 6);
124 * diag - print a diagnostic message (use instead of printf/fprintf)
125 * @fmt: the format of the printf-style message
127 * diag ensures that the output will not be considered to be a test
128 * result by the TAP test harness. It will append '\n' for you.
131 * diag("Now running complex tests");
133 void diag(const char *fmt, ...) PRINTF_FMT(1, 2);
136 * skip - print a diagnostic message (use instead of printf/fprintf)
137 * @n: number of tests you're skipping.
138 * @fmt: the format of the reason you're skipping the tests.
140 * Sometimes tests cannot be run because the test system lacks some feature:
141 * you should explicitly document that you're skipping tests using skip().
143 * From the Test::More documentation:
144 * If it's something the user might not be able to do, use SKIP. This
145 * includes optional modules that aren't installed, running under an OS that
146 * doesn't have some feature (like fork() or symlinks), or maybe you need an
147 * Internet connection and one isn't available.
150 * #ifdef HAVE_SOME_FEATURE
153 * skip(1, "Don't have SOME_FEATURE");
156 void skip(unsigned int n, const char *fmt, ...) PRINTF_FMT(2, 3);
159 * todo_start - mark tests that you expect to fail.
160 * @fmt: the reason they currently fail.
162 * It's extremely useful to write tests before you implement the matching fix
163 * or features: surround these tests by todo_start()/todo_end(). These tests
164 * will still be run, but with additional output that indicates that they are
167 * This way, should a test start to succeed unexpectedly, tools like prove(1)
168 * will indicate this and you can move the test out of the todo block. This
169 * is much more useful than simply commenting out (or '#if 0') the tests.
171 * From the Test::More documentation:
172 * If it's something the programmer hasn't done yet, use TODO. This is for
173 * any code you haven't written yet, or bugs you have yet to fix, but want to
174 * put tests in your testing script (always a good idea).
177 * static bool dwim(void)
179 * return false; // NYI
182 * todo_start("dwim() not returning true yet");
183 * ok(dwim(), "Did what the user wanted");
186 void todo_start(const char *fmt, ...) PRINTF_FMT(1, 2);
189 * todo_end - end of tests you expect to fail.
196 * exit_status - the value that main should return.
198 * For maximum compatability your test program should return a particular exit
199 * code (ie. 0 if all tests were run, and every test which was expected to
200 * succeed succeeded).
203 * exit(exit_status());
205 int exit_status(void);
208 * plan_no_plan - I have no idea how many tests I'm going to run.
210 * In some situations you may not know how many tests you will be running, or
211 * you are developing your test program, and do not want to update the
212 * plan_tests() call every time you make a change. For those situations use
213 * plan_no_plan() instead of plan_tests(). It indicates to the test harness
214 * that an indeterminate number of tests will be run.
216 * Remember, if you fail to plan, you plan to fail.
220 * while (random() % 2)
222 * exit(exit_status());
224 void plan_no_plan(void);
227 * plan_skip_all - Indicate that you will skip all tests.
228 * @reason: the string indicating why you can't run any tests.
230 * If your test program detects at run time that some required functionality
231 * is missing (for example, it relies on a database connection which is not
232 * present, or a particular configuration option that has not been included
233 * in the running kernel) use plan_skip_all() instead of plan_tests().
236 * #ifndef HAVE_SOME_FEATURE
237 * plan_skip_all("Need SOME_FEATURE support");
238 * exit(exit_status());
244 void plan_skip_all(const char *reason);
246 #endif /* C99 or gcc */