Add a unit test which verifies if the resizer sets/resets DisplayController::dont_warp_mouse_ as ex…

ash/wm/workspace/workspace_window_resizer_unittest.cc

 // Copyright (c) 2012 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 "ash/wm/workspace/workspace_window_resizer.h"
 
+#include "ash/display/display_controller.h"
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/test/ash_test_base.h"
 #include "ash/wm/property_util.h"
 #include "ash/wm/workspace_controller.h"
 #include "ash/wm/workspace/phantom_window_controller.h"
 #include "base/string_number_conversions.h"
 #include "ui/aura/root_window.h"
 #include "ui/aura/test/test_window_delegate.h"
@@ skipping 622 matching lines @@
     EXPECT_FALSE(resizer->snap_phantom_window_controller_.get());
     EXPECT_FALSE(resizer->drag_phantom_window_controller_.get());
 
     resizer->Drag(CalculateDragPoint(*resizer, 0, 610), 0);
     resizer->RevertDrag();
     EXPECT_EQ(root_windows[0], window_->GetRootWindow());
     EXPECT_FLOAT_EQ(1.0f, window_->layer()->opacity());
   }
 }
 
+// Verifies if the resizer sets and resets DisplayController::dont_warp_mouse_
+// as expected.
+TEST_F(WorkspaceWindowResizerTest, WarpMousePointer) {
+  DisplayController* controller = Shell::GetInstance()->display_controller();
+  ASSERT_TRUE(controller);
+  window_->SetBounds(gfx::Rect(0, 0, 50, 60));
+
+  EXPECT_FALSE(controller->dont_warp_mouse_);
+  {
+    scoped_ptr<WorkspaceWindowResizer> resizer(WorkspaceWindowResizer::Create(
+        window_.get(), gfx::Point(), HTCAPTION, empty_windows()));
+    // While dragging a window, warp should be allowed.
+    EXPECT_FALSE(controller->dont_warp_mouse_);
+    resizer->CompleteDrag(0);
+  }
+  EXPECT_FALSE(controller->dont_warp_mouse_);
+
+  {
+    scoped_ptr<WorkspaceWindowResizer> resizer(WorkspaceWindowResizer::Create(
+        window_.get(), gfx::Point(), HTCAPTION, empty_windows()));
+    EXPECT_FALSE(controller->dont_warp_mouse_);
+    resizer->RevertDrag();
+  }
+  EXPECT_FALSE(controller->dont_warp_mouse_);
+
+  {
+    scoped_ptr<WorkspaceWindowResizer> resizer(WorkspaceWindowResizer::Create(
+        window_.get(), gfx::Point(), HTRIGHT, empty_windows()));
+    // While resizing a window, warp should NOT be allowed.
+    EXPECT_TRUE(controller->dont_warp_mouse_);
+    resizer->CompleteDrag(0);
+  }
+  EXPECT_FALSE(controller->dont_warp_mouse_);
+
+  {
+    scoped_ptr<WorkspaceWindowResizer> resizer(WorkspaceWindowResizer::Create(
+        window_.get(), gfx::Point(), HTRIGHT, empty_windows()));
+    EXPECT_TRUE(controller->dont_warp_mouse_);
+    resizer->RevertDrag();
+  }
+  EXPECT_FALSE(controller->dont_warp_mouse_);
+}
+
 // Verifies windows are correctly restacked when reordering multiple windows.
 TEST_F(WorkspaceWindowResizerTest, RestackAttached) {
   window_->SetBounds(gfx::Rect(   0, 0, 200, 300));
   window2_->SetBounds(gfx::Rect(200, 0, 100, 200));
   window3_->SetBounds(gfx::Rect(300, 0, 100, 100));
 
   {
     std::vector<aura::Window*> windows;
     windows.push_back(window2_.get());
     SetGridSize(10);
@@ skipping 178 matching lines @@
   ASSERT_TRUE(resizer.get());
   // Ctrl + drag the window to new poistion by adding (10, 12) to its origin,
   // the window should move to the exact position.
   resizer->Drag(CalculateDragPoint(*resizer, 10, 12), 0);
   resizer->CompleteDrag(ui::EF_CONTROL_DOWN);
   EXPECT_EQ("106,124 320x160", window_->bounds().ToString());
 }
 
 }  // namespace test
 }  // namespace ash