test: fix the tablet relative delta test

These numbers just happened to add up correctly for the motion history to
produce a zero delta for a diagonal movement. Fix it by adding extra events to
flush out any motion history leftovers.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/test/test-tablet.c b/test/test-tablet.c
index 258cdc2cf33ca2c495beceff0b309969ea202247..e3fd228a14a3fcb32bbc1e0b8c417d0f2c090080 100644 (file)
--- a/test/test-tablet.c
+++ b/test/test-tablet.c
@@ -4021,6 +4021,11 @@ START_TEST(relative_delta)
        litest_tablet_proximity_in(dev, 10, 10, axes);
        litest_drain_events(li);
 
+       /* flush the motion history */
+       for (int i = 0; i < 5; i ++)
+               litest_tablet_motion(dev, 10 + i, 10, axes);
+       litest_drain_events(li);
+
        litest_tablet_motion(dev, 20, 10, axes);
        libinput_dispatch(li);
 
@@ -4033,6 +4038,11 @@ START_TEST(relative_delta)
        ck_assert(dy == 0.0);
        libinput_event_destroy(event);
 
+       /* flush the motion history */
+       for (int i = 0; i < 5; i ++)
+               litest_tablet_motion(dev, 20 - i, 10, axes);
+       litest_drain_events(li);
+
        litest_tablet_motion(dev, 5, 10, axes);
        libinput_dispatch(li);
        event = libinput_get_event(li);
@@ -4044,7 +4054,12 @@ START_TEST(relative_delta)
        ck_assert(dy == 0.0);
        libinput_event_destroy(event);
 
-       litest_tablet_motion(dev, 10, 20, axes);
+       /* flush the motion history */
+       for (int i = 0; i < 5; i ++)
+               litest_tablet_motion(dev, 5, 10 + i, axes);
+       litest_drain_events(li);
+
+       litest_tablet_motion(dev, 5, 20, axes);
        libinput_dispatch(li);
        event = libinput_get_event(li);
        tev = litest_is_tablet_event(event,
@@ -4055,7 +4070,13 @@ START_TEST(relative_delta)
        ck_assert(dy > 0.0);
        libinput_event_destroy(event);
 
-       litest_tablet_motion(dev, 10, 5, axes);
+
+       /* flush the motion history */
+       for (int i = 0; i < 5; i ++)
+               litest_tablet_motion(dev, 5, 20 - i, axes);
+       litest_drain_events(li);
+
+       litest_tablet_motion(dev, 5, 10, axes);
        libinput_dispatch(li);
        event = libinput_get_event(li);
        tev = litest_is_tablet_event(event,