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Diffstat (limited to '')
-rw-r--r-- | src/test/test-errno-util.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/test/test-errno-util.c b/src/test/test-errno-util.c new file mode 100644 index 0000000..f858927 --- /dev/null +++ b/src/test/test-errno-util.c @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "errno-util.h" +#include "stdio-util.h" +#include "string-util.h" +#include "tests.h" + +TEST(strerror_not_threadsafe) { + /* Just check that strerror really is not thread-safe. */ + log_info("strerror(%d) → %s", 200, strerror(200)); + log_info("strerror(%d) → %s", 201, strerror(201)); + log_info("strerror(%d) → %s", INT_MAX, strerror(INT_MAX)); + + log_info("strerror(%d), strerror(%d) → %p, %p", 200, 201, strerror(200), strerror(201)); + + /* This call is not allowed, because the first returned string becomes invalid when + * we call strerror the second time: + * + * log_info("strerror(%d), strerror(%d) → %s, %s", 200, 201, strerror(200), strerror(201)); + */ +} + +TEST(STRERROR) { + /* Just check that STRERROR really is thread-safe. */ + log_info("STRERROR(%d) → %s", 200, STRERROR(200)); + log_info("STRERROR(%d) → %s", 201, STRERROR(201)); + log_info("STRERROR(%d), STRERROR(%d) → %s, %s", 200, 201, STRERROR(200), STRERROR(201)); + + const char *a = STRERROR(200), *b = STRERROR(201); + assert_se(strstr(a, "200")); + assert_se(strstr(b, "201")); + + /* Check with negative values */ + assert_se(streq(a, STRERROR(-200))); + assert_se(streq(b, STRERROR(-201))); + + const char *c = STRERROR(INT_MAX); + char buf[DECIMAL_STR_MAX(int)]; + xsprintf(buf, "%d", INT_MAX); /* INT_MAX is hexadecimal, use printf to convert to decimal */ + log_info("STRERROR(%d) → %s", INT_MAX, c); + assert_se(strstr(c, buf)); +} + +TEST(STRERROR_OR_ELSE) { + log_info("STRERROR_OR_ELSE(0, \"EOF\") → %s", STRERROR_OR_EOF(0)); + log_info("STRERROR_OR_ELSE(EPERM, \"EOF\") → %s", STRERROR_OR_EOF(EPERM)); + log_info("STRERROR_OR_ELSE(-EPERM, \"EOF\") → %s", STRERROR_OR_EOF(-EPERM)); +} + +DEFINE_TEST_MAIN(LOG_INFO); |