Initial browser-side implementation for touch-action

content/browser/renderer_host/input/touch_event_queue_unittest.cc

Index: content/browser/renderer_host/input/touch_event_queue_unittest.cc
diff --git a/content/browser/renderer_host/input/touch_event_queue_unittest.cc b/content/browser/renderer_host/input/touch_event_queue_unittest.cc
index c57cbbe40d42f940d11e0d5bce03ae9aa8c720a2..0ea5ba3d77060f22ecd417b24c169bf1f53f76ef 100644
--- a/content/browser/renderer_host/input/touch_event_queue_unittest.cc
+++ b/content/browser/renderer_host/input/touch_event_queue_unittest.cc
@@ -117,6 +117,10 @@ class TouchEventQueueTest : public testing::Test,
     return count;
   }
 
+  bool IsPendingAckTouchStart(int touch_id) const {
+    return queue_->IsPendingAckTouchStart(touch_id);
+  }
+
   void Flush() {
     queue_->FlushQueue();
   }
@@ -780,4 +784,66 @@ TEST_F(TouchEventQueueTest, NoTouchOnScroll) {
   EXPECT_EQ(1U, GetAndResetAckedEventCount());
 }
 
+// Tests that IsTouchStartPendingAck works correctly.
+TEST_F(TouchEventQueueTest, PendingStart) {
+
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+
+  // Send the touchstart for id 0.
+  PressTouchPoint(1, 1);
+  SendTouchEvent();
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart(0));
+  EXPECT_FALSE(IsPendingAckTouchStart(1));
+
+  // Send a touchmove for id 0.
+  MoveTouchPoint(0, 5, 5);
+  SendTouchEvent();
+  EXPECT_EQ(2U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart(0));
+  EXPECT_FALSE(IsPendingAckTouchStart(1));
+
+  // Ack the touchstart for id 0.
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+
+  // Send a touchstart for id 1.
+  PressTouchPoint(10, 10);
+  SendTouchEvent();
+  EXPECT_EQ(2U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+  EXPECT_FALSE(IsPendingAckTouchStart(1));
+  EXPECT_FALSE(IsPendingAckTouchStart(2));
+
+  // Ack the touchmove for id 0.
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+  EXPECT_TRUE(IsPendingAckTouchStart(1));
+  EXPECT_FALSE(IsPendingAckTouchStart(2));
+
+  // Send a touchstart for id 2.
+  PressTouchPoint(15, 15);
+  SendTouchEvent();
+  EXPECT_EQ(2U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+  EXPECT_TRUE(IsPendingAckTouchStart(1));
+  EXPECT_FALSE(IsPendingAckTouchStart(2));
+
+  // Ack the touchstart for id 1.
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+  EXPECT_FALSE(IsPendingAckTouchStart(1));
+  EXPECT_TRUE(IsPendingAckTouchStart(2));
+
+  // Ack the touchstart for id 2.
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(0U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart(0));
+  EXPECT_FALSE(IsPendingAckTouchStart(1));
+  EXPECT_FALSE(IsPendingAckTouchStart(2));
+}
+
 }  // namespace content