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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * kselftest.h: low-level kselftest framework to include from
4 * selftest programs. When possible, please use
5 * kselftest_harness.h instead.
6 *
7 * Copyright (c) 2014 Shuah Khan <shuahkh@osg.samsung.com>
8 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
9 *
10 * Using this API consists of first counting how many tests your code
11 * has to run, and then starting up the reporting:
12 *
13 * ksft_print_header();
14 * ksft_set_plan(total_number_of_tests);
15 *
16 * For each test, report any progress, debugging, etc with:
17 *
18 * ksft_print_msg(fmt, ...);
19 *
20 * and finally report the pass/fail/skip/xfail state of the test with one of:
21 *
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 *
29 * When all tests are finished, clean up and exit the program with one of:
30 *
31 * ksft_exit(condition);
32 * ksft_exit_pass();
33 * ksft_exit_fail();
34 *
35 * If the program wants to report details on why the entire program has
36 * failed, it can instead exit with a message (this is usually done when
37 * the program is aborting before finishing all tests):
38 *
39 * ksft_exit_fail_msg(fmt, ...);
40 *
41 */
42#ifndef __KSELFTEST_H
43#define __KSELFTEST_H
44
45#include <errno.h>
46#include <stdlib.h>
47#include <unistd.h>
48#include <stdarg.h>
49#include <stdio.h>
50
51#ifndef ARRAY_SIZE
52#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
53#endif
54
55/* define kselftest exit codes */
56#define KSFT_PASS 0
57#define KSFT_FAIL 1
58#define KSFT_XFAIL 2
59#define KSFT_XPASS 3
60#define KSFT_SKIP 4
61
62/* counters */
63struct ksft_count {
64 unsigned int ksft_pass;
65 unsigned int ksft_fail;
66 unsigned int ksft_xfail;
67 unsigned int ksft_xpass;
68 unsigned int ksft_xskip;
69 unsigned int ksft_error;
70};
71
72static struct ksft_count ksft_cnt;
73static unsigned int ksft_plan;
74
75static inline unsigned int ksft_test_num(void)
76{
77 return ksft_cnt.ksft_pass + ksft_cnt.ksft_fail +
78 ksft_cnt.ksft_xfail + ksft_cnt.ksft_xpass +
79 ksft_cnt.ksft_xskip + ksft_cnt.ksft_error;
80}
81
82static inline void ksft_inc_pass_cnt(void) { ksft_cnt.ksft_pass++; }
83static inline void ksft_inc_fail_cnt(void) { ksft_cnt.ksft_fail++; }
84static inline void ksft_inc_xfail_cnt(void) { ksft_cnt.ksft_xfail++; }
85static inline void ksft_inc_xpass_cnt(void) { ksft_cnt.ksft_xpass++; }
86static inline void ksft_inc_xskip_cnt(void) { ksft_cnt.ksft_xskip++; }
87static inline void ksft_inc_error_cnt(void) { ksft_cnt.ksft_error++; }
88
89static inline int ksft_get_pass_cnt(void) { return ksft_cnt.ksft_pass; }
90static inline int ksft_get_fail_cnt(void) { return ksft_cnt.ksft_fail; }
91static inline int ksft_get_xfail_cnt(void) { return ksft_cnt.ksft_xfail; }
92static inline int ksft_get_xpass_cnt(void) { return ksft_cnt.ksft_xpass; }
93static inline int ksft_get_xskip_cnt(void) { return ksft_cnt.ksft_xskip; }
94static inline int ksft_get_error_cnt(void) { return ksft_cnt.ksft_error; }
95
96static inline void ksft_print_header(void)
97{
98 if (!(getenv("KSFT_TAP_LEVEL")))
99 printf("TAP version 13\n");
100}
101
102static inline void ksft_set_plan(unsigned int plan)
103{
104 ksft_plan = plan;
105 printf("1..%d\n", ksft_plan);
106}
107
108static inline void ksft_print_cnts(void)
109{
110 if (ksft_plan != ksft_test_num())
111 printf("# Planned tests != run tests (%u != %u)\n",
112 ksft_plan, ksft_test_num());
113 printf("# Totals: pass:%d fail:%d xfail:%d xpass:%d skip:%d error:%d\n",
114 ksft_cnt.ksft_pass, ksft_cnt.ksft_fail,
115 ksft_cnt.ksft_xfail, ksft_cnt.ksft_xpass,
116 ksft_cnt.ksft_xskip, ksft_cnt.ksft_error);
117}
118
119static inline void ksft_print_msg(const char *msg, ...)
120{
121 int saved_errno = errno;
122 va_list args;
123
124 va_start(args, msg);
125 printf("# ");
126 errno = saved_errno;
127 vprintf(msg, args);
128 va_end(args);
129}
130
131static inline void ksft_test_result_pass(const char *msg, ...)
132{
133 int saved_errno = errno;
134 va_list args;
135
136 ksft_cnt.ksft_pass++;
137
138 va_start(args, msg);
139 printf("ok %d ", ksft_test_num());
140 errno = saved_errno;
141 vprintf(msg, args);
142 va_end(args);
143}
144
145static inline void ksft_test_result_fail(const char *msg, ...)
146{
147 int saved_errno = errno;
148 va_list args;
149
150 ksft_cnt.ksft_fail++;
151
152 va_start(args, msg);
153 printf("not ok %d ", ksft_test_num());
154 errno = saved_errno;
155 vprintf(msg, args);
156 va_end(args);
157}
158
159/**
160 * ksft_test_result() - Report test success based on truth of condition
161 *
162 * @condition: if true, report test success, otherwise failure.
163 */
164#define ksft_test_result(condition, fmt, ...) do { \
165 if (!!(condition)) \
166 ksft_test_result_pass(fmt, ##__VA_ARGS__);\
167 else \
168 ksft_test_result_fail(fmt, ##__VA_ARGS__);\
169 } while (0)
170
171static inline void ksft_test_result_xfail(const char *msg, ...)
172{
173 int saved_errno = errno;
174 va_list args;
175
176 ksft_cnt.ksft_xfail++;
177
178 va_start(args, msg);
179 printf("ok %d # XFAIL ", ksft_test_num());
180 errno = saved_errno;
181 vprintf(msg, args);
182 va_end(args);
183}
184
185static inline void ksft_test_result_skip(const char *msg, ...)
186{
187 int saved_errno = errno;
188 va_list args;
189
190 ksft_cnt.ksft_xskip++;
191
192 va_start(args, msg);
193 printf("ok %d # SKIP ", ksft_test_num());
194 errno = saved_errno;
195 vprintf(msg, args);
196 va_end(args);
197}
198
199/* TODO: how does "error" differ from "fail" or "skip"? */
200static inline void ksft_test_result_error(const char *msg, ...)
201{
202 int saved_errno = errno;
203 va_list args;
204
205 ksft_cnt.ksft_error++;
206
207 va_start(args, msg);
208 printf("not ok %d # error ", ksft_test_num());
209 errno = saved_errno;
210 vprintf(msg, args);
211 va_end(args);
212}
213
214static inline int ksft_exit_pass(void)
215{
216 ksft_print_cnts();
217 exit(KSFT_PASS);
218}
219
220static inline int ksft_exit_fail(void)
221{
222 ksft_print_cnts();
223 exit(KSFT_FAIL);
224}
225
226/**
227 * ksft_exit() - Exit selftest based on truth of condition
228 *
229 * @condition: if true, exit self test with success, otherwise fail.
230 */
231#define ksft_exit(condition) do { \
232 if (!!(condition)) \
233 ksft_exit_pass(); \
234 else \
235 ksft_exit_fail(); \
236 } while (0)
237
238static inline int ksft_exit_fail_msg(const char *msg, ...)
239{
240 int saved_errno = errno;
241 va_list args;
242
243 va_start(args, msg);
244 printf("Bail out! ");
245 errno = saved_errno;
246 vprintf(msg, args);
247 va_end(args);
248
249 ksft_print_cnts();
250 exit(KSFT_FAIL);
251}
252
253static inline int ksft_exit_xfail(void)
254{
255 ksft_print_cnts();
256 exit(KSFT_XFAIL);
257}
258
259static inline int ksft_exit_xpass(void)
260{
261 ksft_print_cnts();
262 exit(KSFT_XPASS);
263}
264
265static inline int ksft_exit_skip(const char *msg, ...)
266{
267 int saved_errno = errno;
268 va_list args;
269
270 va_start(args, msg);
271
272 /*
273 * FIXME: several tests misuse ksft_exit_skip so produce
274 * something sensible if some tests have already been run
275 * or a plan has been printed. Those tests should use
276 * ksft_test_result_skip or ksft_exit_fail_msg instead.
277 */
278 if (ksft_plan || ksft_test_num()) {
279 ksft_cnt.ksft_xskip++;
280 printf("ok %d # SKIP ", 1 + ksft_test_num());
281 } else {
282 printf("1..0 # SKIP ");
283 }
284 if (msg) {
285 errno = saved_errno;
286 vprintf(msg, args);
287 va_end(args);
288 }
289 if (ksft_test_num())
290 ksft_print_cnts();
291 exit(KSFT_SKIP);
292}
293
294#endif /* __KSELFTEST_H */