Mojo framework for AndroidOverlay.

media/mojo/clients/mojo_android_overlay_unittest.cc

Index: media/mojo/clients/mojo_android_overlay_unittest.cc
diff --git a/media/mojo/clients/mojo_android_overlay_unittest.cc b/media/mojo/clients/mojo_android_overlay_unittest.cc
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+++ b/media/mojo/clients/mojo_android_overlay_unittest.cc
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+// 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/bind.h"
+#include "base/macros.h"
+#include "base/memory/ptr_util.h"
+#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "media/base/mock_filters.h"
+#include "media/mojo/clients/mojo_android_overlay.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "services/service_manager/public/interfaces/interface_provider.mojom.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::_;
+using ::testing::StrictMock;
+
+namespace media {
+
+class MockAndroidOverlay : public StrictMock<mojom::AndroidOverlay> {
+ public:
+  MOCK_METHOD1(ScheduleLayout, void(const gfx::Rect& rect));
+};
+
+// Handy class with client-level callback mocks.
+class ClientCallbacks {
+ public:
+  virtual void OnReady() = 0;
+  virtual void OnFailed() = 0;
+  virtual void OnDestroyed() = 0;
+};
+
+class MockClientCallbacks : public StrictMock<ClientCallbacks> {
+ public:
+  MOCK_METHOD0(OnReady, void());
+  MOCK_METHOD0(OnFailed, void());
+  MOCK_METHOD0(OnDestroyed, void());
+};
+
+class MockAndroidOverlayProvider
+    : public StrictMock<mojom::AndroidOverlayProvider> {
+ public:
+  // These argument types lack default constructors, so gmock can't mock them.
+  void CreateOverlay(mojom::AndroidOverlayRequest overlay_request,
+                     mojom::AndroidOverlayClientPtr client,
+                     mojom::AndroidOverlayConfigPtr config) override {
+    overlay_request_ = std::move(overlay_request);
+    client_ = std::move(client);
+    config_ = std::move(config);
+    OverlayCreated();
+  }
+
+  MOCK_METHOD0(OverlayCreated, void(void));
+
+  mojom::AndroidOverlayRequest overlay_request_;
+  mojom::AndroidOverlayClientPtr client_;
+  mojom::AndroidOverlayConfigPtr config_;
+};
+
+// When the overlay client needs the provider interface, it'll ask us.
+class MockInterfaceProvider
+    : public StrictMock<service_manager::mojom::InterfaceProvider> {
+ public:
+  // |provider| is the provider that we'll provide, provided that we're only
+  // asked to provide it once.  Savvy?
+  MockInterfaceProvider(mojom::AndroidOverlayProvider& provider)
+      : provider_binding_(&provider) {}
+
+  // We can't mock GetInterface directly because of |handle|'s deleted ctor.
+  MOCK_METHOD1(InterfaceGotten, void(const std::string&));
+
+  void GetInterface(const std::string& name,
+                    mojo::ScopedMessagePipeHandle handle) override {
+    // Let the mock know.
+    InterfaceGotten(name);
+
+    // Actually do the work.
+    provider_binding_.Bind(
+        mojo::MakeRequest<mojom::AndroidOverlayProvider>(std::move(handle)));
+  }
+
+  mojo::Binding<mojom::AndroidOverlayProvider> provider_binding_;
+};
+
+class MojoAndroidOverlayTest : public ::testing::Test {
+ public:
+  MojoAndroidOverlayTest()
+      : overlay_binding_(&mock_overlay_), interface_provider_(mock_provider_) {}
+
+  ~MojoAndroidOverlayTest() override {}
+
+  void SetUp() override {
+    // Set up default config.
+    config_.routing_token = base::UnguessableToken::Create();
+    config_.rect = gfx::Rect(100, 200, 300, 400);
+    config_.ready_cb = base::Bind(&MockClientCallbacks::OnReady,
+                                  base::Unretained(&callbacks_));
+    config_.failed_cb = base::Bind(&MockClientCallbacks::OnFailed,
+                                   base::Unretained(&callbacks_));
+    config_.destroyed_cb = base::Bind(&MockClientCallbacks::OnDestroyed,
+                                      base::Unretained(&callbacks_));
+  }
+
+  void TearDown() override {
+    overlay_client_.reset();
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Create an overlay in |overlay_client_| using the current config, but do
+  // not bind anything to |overlay_request_| yet.
+  void CreateOverlay() {
+    EXPECT_CALL(interface_provider_,
+                InterfaceGotten(mojom::AndroidOverlayProvider::Name_))
+        .Times(1);
+    EXPECT_CALL(mock_provider_, OverlayCreated());
+
+    overlay_client_.reset(
+        new MojoAndroidOverlay(&interface_provider_, config_));
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Create an overlay, then provide it with |mock_overlay_|.
+  void CreateAndInitializeOverlay() {
+    CreateOverlay();
+
+    // Bind an overlay to the request.
+    overlay_binding_.Bind(std::move(mock_provider_.overlay_request_));
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Notify |overlay_client_| that the surface is ready.
+  void CreateSurface() {
+    EXPECT_CALL(callbacks_, OnReady());
+    const int surface_key = 123;
+    mock_provider_.client_->OnSurfaceReady(surface_key);
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Destroy the overlay.  This includes onSurfaceDestroyed cases.
+  void DestroyOverlay() {
+    mock_provider_.client_->OnDestroyed();
+    base::RunLoop().RunUntilIdle();
+  }
+
+  // Mojo stuff.
+  base::MessageLoop loop;
+
+  // The mock provider that |overlay_client_| will talk to.
+  // |interface_provider_| will bind it.
+  MockAndroidOverlayProvider mock_provider_;
+
+  // The mock overlay impl that |mock_provider_| will provide.
+  MockAndroidOverlay mock_overlay_;
+  mojo::Binding<mojom::AndroidOverlay> overlay_binding_;
+
+  // The InterfaceProvider impl that will provide |mock_provider_| to the
+  // overlay client |overlay_client_|.
+  MockInterfaceProvider interface_provider_;
+
+  // The client under test.
+  std::unique_ptr<AndroidOverlay> overlay_client_;
+
+  // Inital config for |CreateOverlay|.
+  // Set to sane values, but feel free to modify before CreateOverlay().
+  AndroidOverlay::Config config_;
+  MockClientCallbacks callbacks_;
+};
+
+// Verify basic create => init => ready => destroyed.
+TEST_F(MojoAndroidOverlayTest, CreateInitReadyDestroy) {
+  CreateAndInitializeOverlay();
+  CreateSurface();
+  EXPECT_CALL(callbacks_, OnDestroyed());
+  DestroyOverlay();
+}
+
+// Verify that initialization failure results in an onDestroyed callback.
+TEST_F(MojoAndroidOverlayTest, InitFailure) {
+  CreateOverlay();
+  EXPECT_CALL(callbacks_, OnFailed());
+  DestroyOverlay();
+}
+
+// Verify that we can destroy the overlay before providing a surface.
+TEST_F(MojoAndroidOverlayTest, CreateInitDestroy) {
+  CreateAndInitializeOverlay();
+  EXPECT_CALL(callbacks_, OnFailed());
+  DestroyOverlay();
+}
+
+// Test that layouts happen.
+TEST_F(MojoAndroidOverlayTest, LayoutOverlay) {
+  CreateAndInitializeOverlay();
+  CreateSurface();
+
+  gfx::Rect new_layout(5, 6, 7, 8);
+  EXPECT_CALL(mock_overlay_, ScheduleLayout(new_layout));
+  overlay_client_->ScheduleLayout(new_layout);
+}
+
+// Test that layouts are ignored before the client is notified about a surface.
+TEST_F(MojoAndroidOverlayTest, LayoutBeforeSurfaceIsIgnored) {
+  CreateAndInitializeOverlay();
+
+  gfx::Rect new_layout(5, 6, 7, 8);
+  EXPECT_CALL(mock_overlay_, ScheduleLayout(_)).Times(0);
+  overlay_client_->ScheduleLayout(new_layout);
+}
+
+}  // namespace media