Disambiguate OnMouseCaptureLost from OnMouseReleased, etc.

views/controls/single_split_view_unittest.cc

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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/logging.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "views/controls/single_split_view.h"
 
 using ::testing::_;
 using ::testing::Return;
@@ skipping 114 matching lines @@
   }
 }
 
 TEST(SingleSplitViewTest, MouseDrag) {
   MockObserver observer;
   SingleSplitView split(
       new View(), new View(), SingleSplitView::VERTICAL_SPLIT, &observer);
 
   ON_CALL(observer, SplitHandleMoved(_))
       .WillByDefault(Return(true));
-  // SplitHandleMoved is expected to be called once for every mouse move.
+  // SplitHandleMoved is called for two mouse moves and one mouse capture loss.
   EXPECT_CALL(observer, SplitHandleMoved(_))
-      .Times(2);
+      .Times(3);
 
   split.SetBounds(0, 0, 10, 100);
   const int kInitialDividerOffset = 33;
   const int kMouseOffset = 2;  // Mouse offset in the divider.
   const int kMouseMoveDelta = 7;
   split.set_divider_offset(kInitialDividerOffset);
   split.Layout();
 
   // Drag divider to the right, in 2 steps.
   MouseEvent mouse_pressed(
@@ skipping 10 matching lines @@
   MouseEvent mouse_dragged_2(
       ui::ET_MOUSE_DRAGGED, 6,
       kInitialDividerOffset + kMouseOffset + kMouseMoveDelta * 2, 0);
   ASSERT_TRUE(split.OnMouseDragged(mouse_dragged_2));
   EXPECT_EQ(kInitialDividerOffset + kMouseMoveDelta * 2,
             split.divider_offset());
 
   MouseEvent mouse_released(
       ui::ET_MOUSE_RELEASED, 7,
       kInitialDividerOffset + kMouseOffset + kMouseMoveDelta * 2, 0);
-  split.OnMouseReleased(mouse_released, false);
+  split.OnMouseReleased(mouse_released);
   EXPECT_EQ(kInitialDividerOffset + kMouseMoveDelta * 2,
             split.divider_offset());
+
+  // Expect intial offset after a system/user gesture cancels the drag.
+  // This shouldn't occur after mouse release, but it's sufficient for testing.
+  split.OnMouseCaptureLost();
+  EXPECT_EQ(kInitialDividerOffset, split.divider_offset());
 }
 
 }  // namespace views