1 files changed, 105 insertions, 0 deletions
diff --git a/src/libsystemd/sd-bus/test-bus-cleanup.c b/src/libsystemd/sd-bus/test-bus-cleanup.c
new file mode 100644
index 0000000..3e14627
--- /dev/null
+++ b/src/libsystemd/sd-bus/test-bus-cleanup.c
@@ -0,0 +1,105 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include "sd-bus.h"
+
+#include "bus-internal.h"
+#include "bus-message.h"
+#include "process-util.h"
+#include "tests.h"
+
+static bool use_system_bus = false;
+
+static void test_bus_new(void) {
+        _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+
+        assert_se(sd_bus_new(&bus) == 0);
+        assert_se(bus->n_ref == 1);
+}
+
+static void test_bus_fork(void) {
+        _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL;
+        int r;
+
+        assert_se(sd_bus_new(&bus) == 0);
+        assert_se(bus->n_ref == 1);
+
+        /* Check that after a fork the cleanup functions return NULL */
+        r = safe_fork("(bus-fork-test)", FORK_WAIT|FORK_LOG, NULL);
+        if (r == 0) {
+                assert_se(bus);
+                assert_se(sd_bus_is_ready(bus) == -ECHILD);
+                assert_se(sd_bus_flush_close_unref(bus) == NULL);
+                assert_se(sd_bus_close_unref(bus) == NULL);
+                assert_se(sd_bus_unref(bus) == NULL);
+                sd_bus_close(bus);
+                assert_se(bus->n_ref == 1);
+                _exit(EXIT_SUCCESS);
+        }
+
+        assert_se(r >= 0);
+        assert_se(bus->n_ref == 1);
+}
+
+static int test_bus_open(void) {
+        _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
+        int r;
+
+        r = sd_bus_open_user(&bus);
+        if (IN_SET(r, -ECONNREFUSED, -ENOENT, -ENOMEDIUM)) {
+                r = sd_bus_open_system(&bus);
+                if (IN_SET(r, -ECONNREFUSED, -ENOENT))
+                        return r;
+                use_system_bus = true;
+        }
+
+        assert_se(r >= 0);
+        assert_se(bus->n_ref >= 1); /* we send a hello message when opening, so the count is above 1 */
+
+        return 0;
+}
+
+static void test_bus_new_method_call(void) {
+        sd_bus *bus = NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+
+        assert_se(use_system_bus ? sd_bus_open_system(&bus) >= 0 : sd_bus_open_user(&bus) >= 0);
+
+        assert_se(sd_bus_message_new_method_call(bus, &m, "a.service.name", "/an/object/path", "an.interface.name", "AMethodName") >= 0);
+
+        assert_se(m->n_ref == 1); /* We hold the only reference to the message */
+        assert_se(bus->n_ref >= 2);
+        sd_bus_flush_close_unref(bus);
+        assert_se(m->n_ref == 1);
+}
+
+static void test_bus_new_signal(void) {
+        sd_bus *bus = NULL;
+        _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
+
+        assert_se(use_system_bus ? sd_bus_open_system(&bus) >= 0 : sd_bus_open_user(&bus) >= 0);
+
+        assert_se(sd_bus_message_new_signal(bus, &m, "/an/object/path", "an.interface.name", "Name") >= 0);
+
+        assert_se(m->n_ref == 1); /* We hold the only reference to the message */
+        assert_se(bus->n_ref >= 2);
+        sd_bus_flush_close_unref(bus);
+        assert_se(m->n_ref == 1);
+}
+
+int main(int argc, char **argv) {
+        test_setup_logging(LOG_INFO);
+
+        test_bus_new();
+        test_bus_fork();
+
+        if (test_bus_open() < 0)
+                return log_tests_skipped("Failed to connect to bus");
+
+        test_bus_new_method_call();
+        test_bus_new_signal();
+
+        return EXIT_SUCCESS;
+}