summaryrefslogtreecommitdiffstats
path: root/src/test/test-errno-util.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/test/test-errno-util.c50
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);