1 /* SPDX-License-Identifier: GPL-2.0 */
3 * kselftest.h: low-level kselftest framework to include from
4 * selftest programs. When possible, please use
5 * kselftest_harness.h instead.
7 * Copyright (c) 2014 Shuah Khan <shuahkh@osg.samsung.com>
8 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
10 * Using this API consists of first counting how many tests your code
11 * has to run, and then starting up the reporting:
13 * ksft_print_header();
14 * ksft_set_plan(total_number_of_tests);
16 * For each test, report any progress, debugging, etc with:
18 * ksft_print_msg(fmt, ...);
20 * and finally report the pass/fail/skip/xfail state of the test with one of:
22 * ksft_test_result(condition, fmt, ...);
23 * ksft_test_result_pass(fmt, ...);
24 * ksft_test_result_fail(fmt, ...);
25 * ksft_test_result_skip(fmt, ...);
26 * ksft_test_result_xfail(fmt, ...);
27 * ksft_test_result_error(fmt, ...);
28 * ksft_test_result_code(exit_code, test_name, fmt, ...);
30 * When all tests are finished, clean up and exit the program with one of:
33 * ksft_exit(condition);
37 * If the program wants to report details on why the entire program has
38 * failed, it can instead exit with a message (this is usually done when
39 * the program is aborting before finishing all tests):
41 * ksft_exit_fail_msg(fmt, ...);
57 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
61 * gcc cpuid.h provides __cpuid_count() since v4.4.
62 * Clang/LLVM cpuid.h provides __cpuid_count() since v3.4.0.
64 * Provide local define for tests needing __cpuid_count() because
65 * selftests need to work in older environments that do not yet
66 * have __cpuid_count().
69 #define __cpuid_count(level, count, a, b, c, d) \
70 __asm__ __volatile__ ("cpuid\n\t" \
71 : "=a" (a), "=b" (b), "=c" (c), "=d" (d) \
72 : "0" (level), "2" (count))
75 /* define kselftest exit codes */
82 #define __printf(a, b) __attribute__((format(printf, a, b)))
86 unsigned int ksft_pass;
87 unsigned int ksft_fail;
88 unsigned int ksft_xfail;
89 unsigned int ksft_xpass;
90 unsigned int ksft_xskip;
91 unsigned int ksft_error;
94 static struct ksft_count ksft_cnt;
95 static unsigned int ksft_plan;
97 static inline unsigned int ksft_test_num(void)
99 return ksft_cnt.ksft_pass + ksft_cnt.ksft_fail +
100 ksft_cnt.ksft_xfail + ksft_cnt.ksft_xpass +
101 ksft_cnt.ksft_xskip + ksft_cnt.ksft_error;
104 static inline void ksft_inc_pass_cnt(void) { ksft_cnt.ksft_pass++; }
105 static inline void ksft_inc_fail_cnt(void) { ksft_cnt.ksft_fail++; }
106 static inline void ksft_inc_xfail_cnt(void) { ksft_cnt.ksft_xfail++; }
107 static inline void ksft_inc_xpass_cnt(void) { ksft_cnt.ksft_xpass++; }
108 static inline void ksft_inc_xskip_cnt(void) { ksft_cnt.ksft_xskip++; }
109 static inline void ksft_inc_error_cnt(void) { ksft_cnt.ksft_error++; }
111 static inline int ksft_get_pass_cnt(void) { return ksft_cnt.ksft_pass; }
112 static inline int ksft_get_fail_cnt(void) { return ksft_cnt.ksft_fail; }
113 static inline int ksft_get_xfail_cnt(void) { return ksft_cnt.ksft_xfail; }
114 static inline int ksft_get_xpass_cnt(void) { return ksft_cnt.ksft_xpass; }
115 static inline int ksft_get_xskip_cnt(void) { return ksft_cnt.ksft_xskip; }
116 static inline int ksft_get_error_cnt(void) { return ksft_cnt.ksft_error; }
118 static inline void ksft_print_header(void)
121 * Force line buffering; If stdout is not connected to a terminal, it
122 * will otherwise default to fully buffered, which can cause output
123 * duplication if there is content in the buffer when fork()ing. If
124 * there is a crash, line buffering also means the most recent output
125 * line will be visible.
127 setvbuf(stdout, NULL, _IOLBF, 0);
129 if (!(getenv("KSFT_TAP_LEVEL")))
130 printf("TAP version 13\n");
133 static inline void ksft_set_plan(unsigned int plan)
136 printf("1..%u\n", ksft_plan);
139 static inline void ksft_print_cnts(void)
141 if (ksft_plan != ksft_test_num())
142 printf("# Planned tests != run tests (%u != %u)\n",
143 ksft_plan, ksft_test_num());
144 printf("# Totals: pass:%u fail:%u xfail:%u xpass:%u skip:%u error:%u\n",
145 ksft_cnt.ksft_pass, ksft_cnt.ksft_fail,
146 ksft_cnt.ksft_xfail, ksft_cnt.ksft_xpass,
147 ksft_cnt.ksft_xskip, ksft_cnt.ksft_error);
150 static inline __printf(1, 2) void ksft_print_msg(const char *msg, ...)
152 int saved_errno = errno;
162 static inline void ksft_perror(const char *msg)
165 ksft_print_msg("%s: %s (%d)\n", msg, strerror(errno), errno);
168 * nolibc doesn't provide strerror() and it seems
169 * inappropriate to add one, just print the errno.
171 ksft_print_msg("%s: %d)\n", msg, errno);
175 static inline __printf(1, 2) void ksft_test_result_pass(const char *msg, ...)
177 int saved_errno = errno;
180 ksft_cnt.ksft_pass++;
183 printf("ok %u ", ksft_test_num());
189 static inline __printf(1, 2) void ksft_test_result_fail(const char *msg, ...)
191 int saved_errno = errno;
194 ksft_cnt.ksft_fail++;
197 printf("not ok %u ", ksft_test_num());
204 * ksft_test_result() - Report test success based on truth of condition
206 * @condition: if true, report test success, otherwise failure.
208 #define ksft_test_result(condition, fmt, ...) do { \
210 ksft_test_result_pass(fmt, ##__VA_ARGS__);\
212 ksft_test_result_fail(fmt, ##__VA_ARGS__);\
215 static inline __printf(1, 2) void ksft_test_result_xfail(const char *msg, ...)
217 int saved_errno = errno;
220 ksft_cnt.ksft_xfail++;
223 printf("ok %u # XFAIL ", ksft_test_num());
229 static inline __printf(1, 2) void ksft_test_result_skip(const char *msg, ...)
231 int saved_errno = errno;
234 ksft_cnt.ksft_xskip++;
237 printf("ok %u # SKIP ", ksft_test_num());
243 /* TODO: how does "error" differ from "fail" or "skip"? */
244 static inline __printf(1, 2) void ksft_test_result_error(const char *msg, ...)
246 int saved_errno = errno;
249 ksft_cnt.ksft_error++;
252 printf("not ok %u # error ", ksft_test_num());
258 static inline __printf(3, 4)
259 void ksft_test_result_code(int exit_code, const char *test_name,
260 const char *msg, ...)
262 const char *tap_code = "ok";
263 const char *directive = "";
264 int saved_errno = errno;
269 ksft_cnt.ksft_pass++;
272 directive = " # XFAIL ";
273 ksft_cnt.ksft_xfail++;
276 directive = " # XPASS ";
277 ksft_cnt.ksft_xpass++;
280 directive = " # SKIP ";
281 ksft_cnt.ksft_xskip++;
286 ksft_cnt.ksft_fail++;
290 /* Docs seem to call for double space if directive is absent */
291 if (!directive[0] && msg[0])
295 printf("%s %u %s%s", tap_code, ksft_test_num(), test_name, directive);
302 static inline int ksft_exit_pass(void)
308 static inline int ksft_exit_fail(void)
315 * ksft_exit() - Exit selftest based on truth of condition
317 * @condition: if true, exit self test with success, otherwise fail.
319 #define ksft_exit(condition) do { \
327 * ksft_finished() - Exit selftest with success if all tests passed
329 #define ksft_finished() \
330 ksft_exit(ksft_plan == \
331 ksft_cnt.ksft_pass + \
332 ksft_cnt.ksft_xfail + \
335 static inline __printf(1, 2) int ksft_exit_fail_msg(const char *msg, ...)
337 int saved_errno = errno;
341 printf("Bail out! ");
350 static inline int ksft_exit_xfail(void)
356 static inline int ksft_exit_xpass(void)
362 static inline __printf(1, 2) int ksft_exit_skip(const char *msg, ...)
364 int saved_errno = errno;
370 * FIXME: several tests misuse ksft_exit_skip so produce
371 * something sensible if some tests have already been run
372 * or a plan has been printed. Those tests should use
373 * ksft_test_result_skip or ksft_exit_fail_msg instead.
375 if (ksft_plan || ksft_test_num()) {
376 ksft_cnt.ksft_xskip++;
377 printf("ok %d # SKIP ", 1 + ksft_test_num());
379 printf("1..0 # SKIP ");
391 #endif /* __KSELFTEST_H */