NOT FOR LANDING Introduce and use WebMediaSession

Source/modules/mediasession/MediaSessionTest.cpp

+// Copyright 2015 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 "config.h"
+#include "modules/mediasession/MediaSession.h"
+
+#include "core/dom/Document.h"
+#include "core/testing/DummyPageHolder.h"
+#include "public/platform/modules/mediasession/WebMediaSession.h"
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+using testing::_;
+
+namespace blink {
+namespace {
+
+class MockWebMediaSession : public WebMediaSession {
+public:
+    MOCK_METHOD1(activate, void(WebMediaSessionCommandCallback*));
+    MOCK_METHOD1(deactivate, void(WebMediaSessionCommandCallback*));
+};
+
+class MediaSessionTest : public ::testing::Test {
+protected:
+    MediaSessionTest()
+        : m_page(DummyPageHolder::create(IntSize(1, 1)))
+    {}
+
+    MediaSession* createMediaSession(WebMediaSession* webMediaSession)
+    {
+        // The MediaSession takes ownership of the WebMediaSession, and the
+        // caller must take care to not end up with a stale pointer.
+        return MediaSession::createForTesting(adoptPtr(webMediaSession));
+    }
+
+    Document& document() { return m_page->document(); }
+    ScriptState* mainScriptState() { return ScriptState::forMainWorld(document().frame()); }
+private:
+    OwnPtr<DummyPageHolder> m_page;
+};
+
+TEST_F(MediaSessionTest, Activate)
+{
+    MockWebMediaSession* mockWebMediaSession = new MockWebMediaSession;
+    MediaSession* mediaSession = createMediaSession(mockWebMediaSession);
+    EXPECT_CALL(*mockWebMediaSession, activate(_));
+
+    mediaSession->activate(mainScriptState());
+}
+
+TEST_F(MediaSessionTest, Deactivate)
+{
+    MockWebMediaSession* mockWebMediaSession = new MockWebMediaSession;
+    MediaSession* mediaSession = createMediaSession(mockWebMediaSession);
+    EXPECT_CALL(*mockWebMediaSession, deactivate(_));
+    mediaSession->deactivate(mainScriptState());
+}
+
+} // namespace
+} // namespace blink