Adding Chrome-side WebVR interface

content/browser/vr/vr_device_manager_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 "base/memory/linked_ptr.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/browser/vr/test/fake_vr_device.h"
+#include "content/browser/vr/test/fake_vr_device_provider.h"
+#include "content/browser/vr/vr_device_manager.h"
+#include "content/browser/vr/vr_device_provider.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace content {
+
+class VRDeviceManagerTest : public testing::Test {
+ protected:
+  VRDeviceManagerTest();
+  ~VRDeviceManagerTest() override;
+
+  void SetUp() override;
+
+  bool HasServiceInstance() { return VRDeviceManager::HasInstance(); }
+
+ protected:
+  FakeVRDeviceProvider* provider_;
+  scoped_ptr<VRDeviceManager> device_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(VRDeviceManagerTest);
+};
+
+VRDeviceManagerTest::VRDeviceManagerTest() {
+}
+
+VRDeviceManagerTest::~VRDeviceManagerTest() {
+}
+
+void VRDeviceManagerTest::SetUp() {
+  scoped_ptr<FakeVRDeviceProvider> provider(new FakeVRDeviceProvider());
+  provider_ = provider.get();
+  device_manager_.reset(new VRDeviceManager(provider.Pass()));
+}
+
+TEST_F(VRDeviceManagerTest, InitializationTest) {
+  EXPECT_FALSE(provider_->IsInitialized());
+
+  // Calling GetDevices should initialize the service if it hasn't been
+  // initialized yet or the providesr have been released.
+  // The VRService should initialize each of it's providers upon it's own
+  // initialization.
+  mojo::Array<VRDeviceInfoPtr> webvr_devices;
+  webvr_devices = device_manager_->GetVRDevices();
+  EXPECT_TRUE(provider_->IsInitialized());
+}
+
+TEST_F(VRDeviceManagerTest, GetDevicesBasicTest) {
+  mojo::Array<VRDeviceInfoPtr> webvr_devices;
+  webvr_devices = device_manager_->GetVRDevices();
+  // Calling GetVRDevices should initialize the providers.
+  EXPECT_TRUE(provider_->IsInitialized());
+  // Should successfully return zero devices when none are available.
+  EXPECT_EQ(0u, webvr_devices.size());
+
+  // GetDeviceByIndex should return nullptr if an invalid index in queried.
+  VRDevice* queried_device = device_manager_->GetDevice(1);
+  EXPECT_EQ(nullptr, queried_device);
+
+  scoped_ptr<FakeVRDevice> device1(new FakeVRDevice(provider_));
+  provider_->AddDevice(device1.get());
+  webvr_devices = device_manager_->GetVRDevices();
+  // Should have successfully returned one device.
+  EXPECT_EQ(1u, webvr_devices.size());
+  // The WebVRDevice index should match the device id.
+  EXPECT_EQ(webvr_devices[0]->index, device1->id());
+
+  scoped_ptr<FakeVRDevice> device2(new FakeVRDevice(provider_));
+  provider_->AddDevice(device2.get());
+  webvr_devices = device_manager_->GetVRDevices();
+  // Should have successfully returned two devices.
+  EXPECT_EQ(2u, webvr_devices.size());
+  // NOTE: Returned WebVRDevices are not required to be in any particular order.
+
+  // Querying the WebVRDevice index should return the correct device.
+  queried_device = device_manager_->GetDevice(device1->id());
+  EXPECT_EQ(device1.get(), queried_device);
+  queried_device = device_manager_->GetDevice(device2->id());
+  EXPECT_EQ(device2.get(), queried_device);
+
+  provider_->RemoveDevice(device1.get());
+  webvr_devices = device_manager_->GetVRDevices();
+  // Should have successfully returned one device.
+  EXPECT_EQ(1u, webvr_devices.size());
+  // The WebVRDevice index should match the only remaining device id.
+  EXPECT_EQ(webvr_devices[0]->index, device2->id());
+}
+
+}  // namespace content