Add RendererFactorySelector

media/base/renderer_factory_selector_unittest.cc

+// Copyright 2017 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 <memory>
+
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "media/base/renderer_factory_selector.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+class RendererFactorySelectorTest : public testing::Test {
+ public:
+  typedef RendererFactorySelector::FactoryType FactoryType;
+
+  class FakeFactory : public RendererFactory {
+   public:
+    FakeFactory(FactoryType type) : type_(type){};
+
+    std::unique_ptr<Renderer> CreateRenderer(
+        const scoped_refptr<base::SingleThreadTaskRunner>& media_task_runner,
+        const scoped_refptr<base::TaskRunner>& worker_task_runner,
+        AudioRendererSink* audio_renderer_sink,
+        VideoRendererSink* video_renderer_sink,
+        const RequestSurfaceCB& request_surface_cb) override {
+      return std::unique_ptr<Renderer>();
+    }
+
+    FactoryType factory_type() { return type_; }
+
+   private:
+    FactoryType type_;
+  };
+
+  RendererFactorySelectorTest(){};
+
+  void AddFactory(FactoryType type) {
+    selector_.AddFactory(type, base::MakeUnique<FakeFactory>(type));
+  };
+
+  FactoryType GetCurrentlySelectedFactoryType() {
+    return reinterpret_cast<FakeFactory*>(selector_.GetCurrentFactory())
+        ->factory_type();
+  }
+
+ protected:
+  RendererFactorySelector selector_;
+
+  DISALLOW_COPY_AND_ASSIGN(RendererFactorySelectorTest);
+};
+
+TEST_F(RendererFactorySelectorTest, SetBaseFactory_SingleFactory) {
+  AddFactory(FactoryType::DEFAULT);
+
+  selector_.SetBaseFactoryType(FactoryType::DEFAULT);
+
+  EXPECT_EQ(FactoryType::DEFAULT, GetCurrentlySelectedFactoryType());
+}
+
+TEST_F(RendererFactorySelectorTest, SetBaseFactory_MultipleFactory) {
+  AddFactory(FactoryType::DEFAULT);
+  AddFactory(FactoryType::MOJO);
+
+  selector_.SetBaseFactoryType(FactoryType::DEFAULT);
+  EXPECT_EQ(FactoryType::DEFAULT, GetCurrentlySelectedFactoryType());
+
+  selector_.SetBaseFactoryType(FactoryType::MOJO);
+  EXPECT_EQ(FactoryType::MOJO, GetCurrentlySelectedFactoryType());
+}
+
+}  // namespace media