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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-10 20:49:52 +0000
commit55944e5e40b1be2afc4855d8d2baf4b73d1876b5 (patch)
tree33f869f55a1b149e9b7c2b7e201867ca5dd52992 /src/test/test-errno-util.c
parentInitial commit. (diff)
downloadsystemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.tar.xz
systemd-55944e5e40b1be2afc4855d8d2baf4b73d1876b5.zip
Adding upstream version 255.4.upstream/255.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/test-errno-util.c')
-rw-r--r--src/test/test-errno-util.c112
1 files changed, 112 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..376d532
--- /dev/null
+++ b/src/test/test-errno-util.c
@@ -0,0 +1,112 @@
+/* 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));
+}
+
+TEST(PROTECT_ERRNO) {
+ errno = 12;
+ {
+ PROTECT_ERRNO;
+ errno = 11;
+ }
+ assert_se(errno == 12);
+}
+
+static void test_unprotect_errno_inner_function(void) {
+ PROTECT_ERRNO;
+
+ errno = 2222;
+}
+
+TEST(UNPROTECT_ERRNO) {
+ errno = 4711;
+
+ PROTECT_ERRNO;
+
+ errno = 815;
+
+ UNPROTECT_ERRNO;
+
+ assert_se(errno == 4711);
+
+ test_unprotect_errno_inner_function();
+
+ assert_se(errno == 4711);
+}
+
+TEST(RET_GATHER) {
+ int x = 0, y = 2;
+
+ assert_se(RET_GATHER(x, 5) == 0);
+ assert_se(RET_GATHER(x, -5) == -5);
+ assert_se(RET_GATHER(x, -1) == -5);
+
+ assert_se(RET_GATHER(x, y++) == -5);
+ assert_se(y == 3);
+}
+
+TEST(ERRNO_IS_TRANSIENT) {
+ assert_se( ERRNO_IS_NEG_TRANSIENT(-EINTR));
+ assert_se(!ERRNO_IS_NEG_TRANSIENT(EINTR));
+ assert_se( ERRNO_IS_TRANSIENT(-EINTR));
+ assert_se( ERRNO_IS_TRANSIENT(EINTR));
+
+ /* Test with type wider than int */
+ ssize_t r = -EAGAIN;
+ assert_se( ERRNO_IS_NEG_TRANSIENT(r));
+
+ /* On 64-bit arches, now (int) r == EAGAIN */
+ r = SSIZE_MAX - EAGAIN + 1;
+ assert_se(!ERRNO_IS_NEG_TRANSIENT(r));
+
+ assert_se(!ERRNO_IS_NEG_TRANSIENT(INT_MAX));
+ assert_se(!ERRNO_IS_NEG_TRANSIENT(INT_MIN));
+ assert_se(!ERRNO_IS_NEG_TRANSIENT(INTMAX_MAX));
+ assert_se(!ERRNO_IS_NEG_TRANSIENT(INTMAX_MIN));
+}
+
+DEFINE_TEST_MAIN(LOG_INFO);