Add media router common classes and unittests.

chrome/browser/media/router/media_route_unittest.cc

+// 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 "chrome/browser/media/router/media_route.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+namespace media_router {
+
+class MediaRouteTest : public ::testing::Test {
+ protected:
+  MediaRouteTest() {}
+  ~MediaRouteTest() override {}
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MediaRouteTest);
+};
+
+
+TEST_F(MediaRouteTest, MediaRouteResponseSuccess) {
+  MediaSource source = media_router::ForDialAppMediaSource("someApp");
+  MediaRoute route(
+      "routeId", source, "sinkId", "A route", true);
+
+  RouteRequestId request_id = 123;
+  scoped_ptr<MediaRouteResponse> response =
+      MediaRouteResponse::Success(request_id, route);
+
+  EXPECT_EQ(request_id, response->request_id());
+  const MediaRoute* response_route = response->route();
+  ASSERT_TRUE(response_route);
+  EXPECT_EQ(route, *response_route);
+  EXPECT_TRUE(response->error().empty());
+}
+
+TEST_F(MediaRouteTest, MediaRouteResponseError) {
+  RouteRequestId request_id = 123;
+  std::string error("Error reason");
+  scoped_ptr<MediaRouteResponse> response =
+      MediaRouteResponse::Error(request_id, error);
+
+  EXPECT_EQ(request_id, response->request_id());
+  EXPECT_EQ(error, response->error());
+  EXPECT_FALSE(response->route());
+}
+
+// Tests the == operator.
+TEST_F(MediaRouteTest, Equals) {
+  MediaRoute route1("routeId1",
+      ForDialAppMediaSource("DialApp"), "sinkId", "Description", false);
+
+  // Same as route1.
+  MediaRoute route2("routeId1",
+      ForDialAppMediaSource("DialApp"), "sinkId", "Description", false);
+  EXPECT_EQ(route1, route2);
+
+  // The ID is different from route1's.
+  MediaRoute route3("routeId2",
+      ForDialAppMediaSource("DialApp"), "sinkId", "Description", false);
+  EXPECT_NE(route1, route3);
+
+  // The MediaSource is different from route1's.
+  MediaRoute route4("routeId2",
+      ForDesktopMediaSource(), "sinkId", "Description", false);
+  EXPECT_NE(route1, route4);
+
+  // The sink ID is different from route1's.
+  MediaRoute route5("routeId2",
+      ForDialAppMediaSource("DialApp"), "anotherSinkId", "Description", false);
+  EXPECT_NE(route1, route5);
+}
+
+}  // namespace media_router