Add additional tests for FlTouchManager to validate touch event handling

Author: RBT22

shell/platform/linux/fl_touch_manager_test.cc

@@ -44,7 +44,7 @@ static GdkDevice* makeFakeDevice(GdkInputSource source) {
   return reinterpret_cast<GdkDevice*>(device);
 }
 
-TEST(FlTouchManagerTest, TouchEvent) {
+TEST(FlTouchManagerTest, TouchEvents) {
   g_autoptr(FlEngine) engine = make_mock_engine();
   std::vector<FlutterPointerEvent> pointer_events;
   log_pointer_events(engine, pointer_events);
@@ -73,4 +73,31 @@ TEST(FlTouchManagerTest, TouchEvent) {
   EXPECT_EQ(pointer_events[1].timestamp,
             1000lu);  // Milliseconds -> Microseconds
   EXPECT_EQ(pointer_events[1].phase, kDown);
+
+  event->type = GDK_TOUCH_UPDATE;
+  fl_touch_manager_handle_touch_event(manager, event, 1.0);
+  EXPECT_EQ(pointer_events.size(), 3u);
+  EXPECT_EQ(pointer_events[2].x, 4.0);
+  EXPECT_EQ(pointer_events[2].y, 8.0);
+  EXPECT_EQ(pointer_events[2].device_kind, kFlutterPointerDeviceKindTouch);
+  EXPECT_EQ(pointer_events[2].timestamp,
+            1000lu);  // Milliseconds -> Microseconds
+  EXPECT_EQ(pointer_events[2].phase, kMove);
+
+  event->type = GDK_TOUCH_END;
+  fl_touch_manager_handle_touch_event(manager, event, 1.0);
+  EXPECT_EQ(pointer_events.size(), 5u);
+  EXPECT_EQ(pointer_events[3].x, 4.0);
+  EXPECT_EQ(pointer_events[3].y, 8.0);
+  EXPECT_EQ(pointer_events[3].device_kind, kFlutterPointerDeviceKindTouch);
+  EXPECT_EQ(pointer_events[3].timestamp,
+            1000lu);  // Milliseconds -> Microseconds
+  EXPECT_EQ(pointer_events[3].phase, kUp);
+
+  EXPECT_EQ(pointer_events[4].x, 4.0);
+  EXPECT_EQ(pointer_events[4].y, 8.0);
+  EXPECT_EQ(pointer_events[4].device_kind, kFlutterPointerDeviceKindTouch);
+  EXPECT_EQ(pointer_events[4].timestamp,
+            1000lu);  // Milliseconds -> Microseconds
+  EXPECT_EQ(pointer_events[4].phase, kRemove);
 }