logind: unify how we cast between uid_t and pointers for hashmap keys

[elogind.git] / src / test / test-util.c

diff --git a/src/test/test-util.c b/src/test/test-util.c
index 93f11eb6e90a2e2e6aca3926a417d81473b87ae4..d529a213cc24fec7aa6890c4b36ec415ae578b7b 100644 (file)
--- a/src/test/test-util.c
+++ b/src/test/test-util.c
@@ -145,6 +145,39 @@ static void test_alloca(void) {
         assert_se(!memcmp(t, zero, 997));
 }
 
+static void test_div_round_up(void) {
+        int div;
+
+        /* basic tests */
+        assert_se(DIV_ROUND_UP(0, 8) == 0);
+        assert_se(DIV_ROUND_UP(1, 8) == 1);
+        assert_se(DIV_ROUND_UP(8, 8) == 1);
+        assert_se(DIV_ROUND_UP(12, 8) == 2);
+        assert_se(DIV_ROUND_UP(16, 8) == 2);
+
+        /* test multiple evaluation */
+        div = 0;
+        assert_se(DIV_ROUND_UP(div++, 8) == 0 && div == 1);
+        assert_se(DIV_ROUND_UP(++div, 8) == 1 && div == 2);
+        assert_se(DIV_ROUND_UP(8, div++) == 4 && div == 3);
+        assert_se(DIV_ROUND_UP(8, ++div) == 2 && div == 4);
+
+        /* overflow test with exact division */
+        assert_se(sizeof(0U) == 4);
+        assert_se(0xfffffffaU % 10U == 0U);
+        assert_se(0xfffffffaU / 10U == 429496729U);
+        assert_se(DIV_ROUND_UP(0xfffffffaU, 10U) == 429496729U);
+        assert_se((0xfffffffaU + 10U - 1U) / 10U == 0U);
+        assert_se(0xfffffffaU / 10U + !!(0xfffffffaU % 10U) == 429496729U);
+
+        /* overflow test with rounded division */
+        assert_se(0xfffffffdU % 10U == 3U);
+        assert_se(0xfffffffdU / 10U == 429496729U);
+        assert_se(DIV_ROUND_UP(0xfffffffdU, 10U) == 429496730U);
+        assert_se((0xfffffffdU + 10U - 1U) / 10U == 0U);
+        assert_se(0xfffffffdU / 10U + !!(0xfffffffdU % 10U) == 429496730U);
+}
+
 static void test_first_word(void) {
         assert_se(first_word("Hello", ""));
         assert_se(first_word("Hello", "Hello"));
@@ -1348,6 +1381,49 @@ static void test_raw_clone(void) {
         }
 }
 
+static void test_same_fd(void) {
+        _cleanup_close_pair_ int p[2] = { -1, -1 };
+        _cleanup_close_ int a = -1, b = -1, c = -1;
+
+        assert_se(pipe2(p, O_CLOEXEC) >= 0);
+        assert_se((a = dup(p[0])) >= 0);
+        assert_se((b = open("/dev/null", O_RDONLY|O_CLOEXEC)) >= 0);
+        assert_se((c = dup(a)) >= 0);
+
+        assert_se(same_fd(p[0], p[0]) > 0);
+        assert_se(same_fd(p[1], p[1]) > 0);
+        assert_se(same_fd(a, a) > 0);
+        assert_se(same_fd(b, b) > 0);
+
+        assert_se(same_fd(a, p[0]) > 0);
+        assert_se(same_fd(p[0], a) > 0);
+        assert_se(same_fd(c, p[0]) > 0);
+        assert_se(same_fd(p[0], c) > 0);
+        assert_se(same_fd(a, c) > 0);
+        assert_se(same_fd(c, a) > 0);
+
+        assert_se(same_fd(p[0], p[1]) == 0);
+        assert_se(same_fd(p[1], p[0]) == 0);
+        assert_se(same_fd(p[0], b) == 0);
+        assert_se(same_fd(b, p[0]) == 0);
+        assert_se(same_fd(p[1], a) == 0);
+        assert_se(same_fd(a, p[1]) == 0);
+        assert_se(same_fd(p[1], b) == 0);
+        assert_se(same_fd(b, p[1]) == 0);
+
+        assert_se(same_fd(a, b) == 0);
+        assert_se(same_fd(b, a) == 0);
+}
+
+static void test_uid_ptr(void) {
+
+        assert_se(UID_TO_PTR(0) != NULL);
+        assert_se(UID_TO_PTR(1000) != NULL);
+
+        assert_se(PTR_TO_UID(UID_TO_PTR(0)) == 0);
+        assert_se(PTR_TO_UID(UID_TO_PTR(1000)) == 1000);
+}
+
 int main(int argc, char *argv[]) {
         log_parse_environment();
         log_open();
@@ -1357,6 +1433,7 @@ int main(int argc, char *argv[]) {
         test_max();
         test_container_of();
         test_alloca();
+        test_div_round_up();
         test_first_word();
         test_close_many();
         test_parse_boolean();
@@ -1421,6 +1498,8 @@ int main(int argc, char *argv[]) {
         test_unquote_many_words();
         test_parse_proc_cmdline();
         test_raw_clone();
+        test_same_fd();
+        test_uid_ptr();
 
         return 0;
 }