Added accurate TouchToMouseMode testing to SplitTap

ui/chromeos/touch_exploration_controller_unittest.cc

Index: ui/chromeos/touch_exploration_controller_unittest.cc
diff --git a/ui/chromeos/touch_exploration_controller_unittest.cc b/ui/chromeos/touch_exploration_controller_unittest.cc
index 86582f0ff06b5bc06698b094700dc7c677d3e52e..8293367d83e82ccfba276b10eec1b8b883a3a966 100644
--- a/ui/chromeos/touch_exploration_controller_unittest.cc
+++ b/ui/chromeos/touch_exploration_controller_unittest.cc
@@ -782,6 +782,7 @@ TEST_F(TouchExplorationTest, SplitTap) {
   EXPECT_TRUE(events[0]->flags() & ui::EF_IS_SYNTHESIZED);
   EXPECT_TRUE(events[0]->flags() & ui::EF_TOUCH_ACCESSIBILITY);
   ClearCapturedEvents();
+  EXPECT_TRUE(IsInTouchToMouseMode());
 
   // Now tap and release at a different location. This should result in a
   // single touch and release at the location of the first (held) tap,
@@ -790,10 +791,17 @@ TEST_F(TouchExplorationTest, SplitTap) {
   ui::TouchEvent split_tap_press(
       ui::ET_TOUCH_PRESSED, second_touch_location, 1, Now());
   generator_->Dispatch(&split_tap_press);
+  // To simulate the behavior of the real device, we manually disable
+  // mouse events. To not rely on manually setting the state, this is also
+  // tested in touch_exploration_controller_browsertest.
+  cursor_client()->DisableMouseEvents();
   ui::TouchEvent split_tap_release(
       ui::ET_TOUCH_RELEASED, second_touch_location, 1, Now());
   generator_->Dispatch(&split_tap_release);
   EXPECT_FALSE(IsInNoFingersDownState());
+  // Releasing the second finger should re-enable mouse events putting us
+  // back into the touch exploration mode.
+  EXPECT_TRUE(IsInTouchToMouseMode());
 
   const ScopedVector<ui::LocatedEvent>& captured_events = GetCapturedEvents();
   ASSERT_EQ(2U, captured_events.size());
@@ -801,6 +809,13 @@ TEST_F(TouchExplorationTest, SplitTap) {
   EXPECT_EQ(initial_touch_location, captured_events[0]->location());
   EXPECT_EQ(ui::ET_TOUCH_RELEASED, captured_events[1]->type());
   EXPECT_EQ(initial_touch_location, captured_events[1]->location());
+  ClearCapturedEvents();
+
+  ui::TouchEvent touch_explore_release(
+      ui::ET_TOUCH_RELEASED, initial_touch_location, 0, Now());
+  generator_->Dispatch(&touch_explore_release);
+  AdvanceSimulatedTimePastTapDelay();

[mfomitchev, 2014/06/27 19:15:46]

Hmm.. why do we advance the time? Doesn't seems like this should be needed.

[evy, 2014/06/30 23:28:47]

We added single tap, which means that when you lift your finger from touch
exploration you have the option to tap within 300ms anywhere and a click goes
through at the last touch exploration location.

+  EXPECT_TRUE(IsInNoFingersDownState());
 }
 
 // If split tap is started but the touch explore finger is released first,