Initial browser-side implementation for touch-action

content/browser/renderer_host/input/touch_event_queue_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/renderer_host/input/synthetic_web_input_event_builders.h"
 #include "content/browser/renderer_host/input/touch_event_queue.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 99 matching lines @@
     acked_event_count_ = 0;
     return count;
   }
 
   size_t GetAndResetSentEventCount() {
     size_t count = sent_event_count_;
     sent_event_count_ = 0;
     return count;
   }
 
+  bool IsPendingAckTouchStart() const {
+    return queue_->IsPendingAckTouchStart();
+  }
+
   void Flush() {
     queue_->FlushQueue();
   }
 
   size_t queued_event_count() const {
     return queue_->GetQueueSize();
   }
 
   const WebTouchEvent& latest_event() const {
     return queue_->GetLatestEvent().event;
@@ skipping 643 matching lines @@
   SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   EXPECT_EQ(1U, GetAndResetAckedEventCount());
 
   ReleaseTouchPoint(0);
   SendTouchEvent();
   EXPECT_EQ(1U, GetAndResetSentEventCount());
   SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
   EXPECT_EQ(1U, GetAndResetAckedEventCount());
 }
 
+// Tests that IsTouchStartPendingAck works correctly.
+TEST_F(TouchEventQueueTest, PendingStart) {
+
+  EXPECT_FALSE(IsPendingAckTouchStart());
+
+  // Send the touchstart for one point (#1).
+  PressTouchPoint(1, 1);
+  SendTouchEvent();
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart());
+
+  // Send a touchmove for that point (#2).
+  MoveTouchPoint(0, 5, 5);
+  SendTouchEvent();
+  EXPECT_EQ(2U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart());
+
+  // Ack the touchstart (#1).
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart());
+
+  // Send a touchstart for another point (#3).
+  PressTouchPoint(10, 10);
+  SendTouchEvent();
+  EXPECT_EQ(2U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart());
+
+  // Ack the touchmove (#2).
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart());
+
+  // Send a touchstart for a third point (#4).
+  PressTouchPoint(15, 15);
+  SendTouchEvent();
+  EXPECT_EQ(2U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart());
+
+  // Ack the touchstart for the second point (#3).
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(1U, queued_event_count());
+  EXPECT_TRUE(IsPendingAckTouchStart());
+
+  // Ack the touchstart for the third point (#4).
+  SendTouchEventACK(INPUT_EVENT_ACK_STATE_NOT_CONSUMED);
+  EXPECT_EQ(0U, queued_event_count());
+  EXPECT_FALSE(IsPendingAckTouchStart());
+}
+
 }  // namespace content