Add a MotionEventGeneric implementation

ui/events/gesture_detection/motion_event_generic_unittest.cc

+// Copyright 2014 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 "testing/gtest/include/gtest/gtest.h"
+#include "ui/events/gesture_detection/motion_event_generic.h"
+
+namespace ui {
+
+TEST(MotionEventGenericTest, Basic) {
+  base::TimeTicks event_time = base::TimeTicks::Now();
+  MotionEventGeneric event(
+      MotionEvent::ACTION_DOWN, event_time, PointerProperties());
+  EXPECT_EQ(1U, event.GetPointerCount());
+  EXPECT_EQ(0U, event.GetHistorySize());
+  EXPECT_EQ(event_time, event.GetEventTime());
+
+  event.PushPointer(PointerProperties(8.3f, 4.7f));
+  ASSERT_EQ(2U, event.GetPointerCount());
+  EXPECT_EQ(8.3f, event.GetX(1));
+  EXPECT_EQ(4.7f, event.GetY(1));
+
+  event.PushPointer(PointerProperties(2.3f, -3.7f));
+  ASSERT_EQ(3U, event.GetPointerCount());
+  EXPECT_EQ(2.3f, event.GetX(2));
+  EXPECT_EQ(-3.7f, event.GetY(2));
+
+  event.set_id(1);
+  EXPECT_EQ(1, event.GetId());
+
+  event.set_action(MotionEvent::ACTION_POINTER_DOWN);
+  EXPECT_EQ(MotionEvent::ACTION_POINTER_DOWN, event.GetAction());
+
+  event_time += base::TimeDelta::FromMilliseconds(5);
+  event.set_event_time(event_time);
+  EXPECT_EQ(event_time, event.GetEventTime());
+
+  event.set_button_state(MotionEvent::BUTTON_PRIMARY);
+  EXPECT_EQ(MotionEvent::BUTTON_PRIMARY, event.GetButtonState());
+
+  event.set_action_index(1);
+  EXPECT_EQ(1, event.GetActionIndex());
+}
+
+TEST(MotionEventGenericTest, Clone) {
+  MotionEventGeneric event(MotionEvent::ACTION_DOWN,
+                           base::TimeTicks::Now(),
+                           PointerProperties(8.3f, 4.7f));
+  event.set_id(1);
+  event.set_button_state(MotionEvent::BUTTON_PRIMARY);
+
+  scoped_ptr<MotionEvent> clone = event.Clone();
+  ASSERT_TRUE(clone);
+  EXPECT_EQ(event, *clone);
+}
+
+TEST(MotionEventGenericTest, Cancel) {
+  MotionEventGeneric event(MotionEvent::ACTION_UP,
+                           base::TimeTicks::Now(),
+                           PointerProperties(8.7f, 4.3f));
+  event.set_id(2);
+  event.set_button_state(MotionEvent::BUTTON_SECONDARY);
+
+  scoped_ptr<MotionEvent> cancel = event.Cancel();
+  event.set_action(MotionEvent::ACTION_CANCEL);
+  ASSERT_TRUE(cancel);
+  EXPECT_EQ(event, *cancel);
+}
+
+}  // namespace ui