Fix cursor getting invisible after moving a window.

ash/wm/cursor_manager_unittest.cc

Index: ash/wm/cursor_manager_unittest.cc
diff --git a/ash/wm/cursor_manager_unittest.cc b/ash/wm/cursor_manager_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..79b2aea83bdce11ef57c6efad6ae2ded6f749dd9
--- /dev/null
+++ b/ash/wm/cursor_manager_unittest.cc
@@ -0,0 +1,70 @@
+// 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/cursor_manager.h"
+
+#include "ash/shell.h"
+#include "ash/test/ash_test_base.h"
+#include "ash/test/cursor_manager_test_api.h"
+#include "ash/wm/image_cursors.h"
+
+namespace ash {
+namespace test {
+
+typedef test::AshTestBase CursorManagerTest;
+
+TEST_F(CursorManagerTest, LockCursor) {
+  CursorManager* cursor_manager = Shell::GetInstance()->cursor_manager();
+  CursorManagerTestApi test_api(cursor_manager);
+
+  cursor_manager->SetCursor(ui::kCursorCopy);
+  EXPECT_EQ(ui::kCursorCopy, test_api.GetCurrentCursor().native_type());
+  cursor_manager->SetDeviceScaleFactor(2.0f);
+  EXPECT_EQ(2.0f, test_api.GetDeviceScaleFactor());
+  EXPECT_TRUE(test_api.GetCurrentCursor().platform());
+
+  cursor_manager->LockCursor();
+  EXPECT_TRUE(cursor_manager->is_cursor_locked());
+
+  // Cursor type does not change while cursor is locked.
+  cursor_manager->SetCursor(ui::kCursorPointer);
+  EXPECT_EQ(ui::kCursorCopy, test_api.GetCurrentCursor().native_type());
+
+  // Device scale factor does change even while cursor is locked.
+  cursor_manager->SetDeviceScaleFactor(1.0f);
+  EXPECT_EQ(1.0f, test_api.GetDeviceScaleFactor());
+
+  cursor_manager->UnlockCursor();
+  EXPECT_FALSE(cursor_manager->is_cursor_locked());
+
+  // Cursor type changes to the one specified while cursor is locked.
+  EXPECT_EQ(ui::kCursorPointer, test_api.GetCurrentCursor().native_type());
+  EXPECT_EQ(1.0f, test_api.GetDeviceScaleFactor());
+  EXPECT_TRUE(test_api.GetCurrentCursor().platform());
+}
+
+TEST_F(CursorManagerTest, SetCursor) {
+  CursorManager* cursor_manager = Shell::GetInstance()->cursor_manager();
+  CursorManagerTestApi test_api(cursor_manager);
+
+  cursor_manager->SetCursor(ui::kCursorCopy);
+  EXPECT_EQ(ui::kCursorCopy, test_api.GetCurrentCursor().native_type());
+  EXPECT_TRUE(test_api.GetCurrentCursor().platform());
+  cursor_manager->SetCursor(ui::kCursorPointer);
+  EXPECT_EQ(ui::kCursorPointer, test_api.GetCurrentCursor().native_type());
+  EXPECT_TRUE(test_api.GetCurrentCursor().platform());
+}
+
+TEST_F(CursorManagerTest, SetDeviceScaleFactor) {
+  CursorManager* cursor_manager = Shell::GetInstance()->cursor_manager();
+  CursorManagerTestApi test_api(cursor_manager);
+
+  cursor_manager->SetDeviceScaleFactor(2.0f);
+  EXPECT_EQ(2.0f, test_api.GetDeviceScaleFactor());
+  cursor_manager->SetDeviceScaleFactor(1.0f);
+  EXPECT_EQ(1.0f, test_api.GetDeviceScaleFactor());
+}
+
+}  // namespace test
+}  // namespace ash