test: Add udev suspend->resume test

Tests that suspend removes devices and that resume rediscovers them.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>

diff --git a/test/udev.c b/test/udev.c
index 2791884..f40533a 100644 (file)
--- a/test/udev.c
+++ b/test/udev.c
@@ -323,6 +323,64 @@ START_TEST(udev_double_resume)
 }
 END_TEST
 
+static void
+process_events_count_devices(struct libinput *li, int *device_count)
+{
+       struct libinput_event *event;
+
+       while ((event = libinput_get_event(li))) {
+               switch (libinput_event_get_type(event)) {
+               case LIBINPUT_EVENT_ADDED_DEVICE:
+                       (*device_count)++;
+                       break;
+               case LIBINPUT_EVENT_REMOVED_DEVICE:
+                       (*device_count)--;
+                       break;
+               default:
+                       break;
+               }
+               libinput_event_destroy(event);
+       }
+}
+
+START_TEST(udev_suspend_resume)
+{
+       struct libinput *li;
+       struct udev *udev;
+       int fd;
+       int num_devices = 0;
+
+       udev = udev_new();
+       ck_assert(udev != NULL);
+
+       li = libinput_create_from_udev(&simple_interface, NULL, udev, "seat0");
+       ck_assert(li != NULL);
+
+       fd = libinput_get_fd(li);
+       ck_assert_int_ge(fd, 0);
+
+       /* Check that at least one device was discovered after creation. */
+       ck_assert_int_ge(libinput_dispatch(li), 0);
+       process_events_count_devices(li, &num_devices);
+       ck_assert_int_gt(num_devices, 0);
+
+       /* Check that after a suspend, no devices are left. */
+       libinput_suspend(li);
+       ck_assert_int_ge(libinput_dispatch(li), 0);
+       process_events_count_devices(li, &num_devices);
+       ck_assert_int_eq(num_devices, 0);
+
+       /* Check that after a resume, at least one device is discovered. */
+       libinput_resume(li);
+       ck_assert_int_ge(libinput_dispatch(li), 0);
+       process_events_count_devices(li, &num_devices);
+       ck_assert_int_gt(num_devices, 0);
+
+       libinput_destroy(li);
+       udev_unref(udev);
+}
+END_TEST
+
 int main (int argc, char **argv) {
 
        litest_add_no_device("udev:create", udev_create_NULL);
@@ -334,6 +392,7 @@ int main (int argc, char **argv) {
 
        litest_add("udev:suspend", udev_double_suspend, LITEST_ANY, LITEST_ANY);
        litest_add("udev:suspend", udev_double_resume, LITEST_ANY, LITEST_ANY);
+       litest_add("udev:suspend", udev_suspend_resume, LITEST_ANY, LITEST_ANY);
 
        return litest_run(argc, argv);
 }