Initial implementation of status tray functionality (mac-only, currently).

chrome/browser/status_icons/status_tray_unittest.cc

+// Copyright (c) 2010 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/string_util.h"
+#include "chrome/browser/status_icons/status_icon.h"
+#include "chrome/browser/status_icons/status_tray.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using testing::Return;
+
+class MockStatusIcon : public StatusIcon {
+  virtual void SetImage(const SkBitmap& image) {}
+  virtual void SetToolTip(const string16& tool_tip) {}
+  virtual void AddObserver(StatusIcon::StatusIconObserver* observer) {}
+  virtual void RemoveObserver(StatusIcon::StatusIconObserver* observer) {}
+};
+
+class TestStatusIconFactory : public StatusIconFactory {
+ public:
+  MOCK_METHOD0(CreateIcon, StatusIcon*());
+};
+
+TEST(StatusTrayTest, Create) {
+  // Check for creation and leaks.
+  TestStatusIconFactory* factory = new TestStatusIconFactory();
+  StatusTray tray(factory);
+  EXPECT_CALL(*factory, CreateIcon()).WillOnce(Return(new MockStatusIcon()));
+  tray.GetStatusIcon(ASCIIToUTF16("test"));
+}
+
+TEST(StatusTrayTest, GetIconTwice) {
+  TestStatusIconFactory* factory = new TestStatusIconFactory();
+  StatusTray tray(factory);
+  string16 id = ASCIIToUTF16("test");
+  // We should not try to create a new icon if we get the same ID twice.
+  EXPECT_CALL(*factory, CreateIcon()).WillOnce(Return(new MockStatusIcon()));
+  StatusIcon* icon =  tray.GetStatusIcon(id);
+  EXPECT_EQ(icon, tray.GetStatusIcon(id));
+}
+
+TEST(StatusTrayTest, GetIconAfterRemove) {
+  TestStatusIconFactory* factory = new TestStatusIconFactory();
+  StatusTray tray(factory);
+  string16 id = ASCIIToUTF16("test");
+  EXPECT_CALL(*factory, CreateIcon()).Times(2)
+      .WillOnce(Return(new MockStatusIcon()))
+      .WillOnce(Return(new MockStatusIcon()));
+  StatusIcon* icon =  tray.GetStatusIcon(id);
+  EXPECT_EQ(icon, tray.GetStatusIcon(id));
+
+  // If we remove the icon, then we should create a new one the next time in.
+  tray.RemoveStatusIcon(id);
+  tray.GetStatusIcon(id);
+}