[DeviceService] Add service tests for VibrationManager.

services/device/device_service_test_base.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 "services/device/device_service_test_base.h"
+
+#include <memory>
+
+#include "base/memory/ptr_util.h"
+#include "mojo/public/cpp/bindings/binding_set.h"
+#include "services/device/device_service.h"
+#include "services/device/public/interfaces/constants.mojom.h"
+#include "services/service_manager/public/cpp/interface_factory.h"
+#include "services/service_manager/public/cpp/interface_registry.h"
+#include "services/service_manager/public/cpp/service_context.h"
+#include "services/service_manager/public/interfaces/service_factory.mojom.h"
+
+namespace device {
+
+namespace {
+
+const char kTestServiceName[] = "device_unittests";
+
+// The test service responsible to package Device Service.
+class ServiceTestClient : public service_manager::test::ServiceTestClient,
+                          public service_manager::mojom::ServiceFactory,
+                          public service_manager::InterfaceFactory<
+                              service_manager::mojom::ServiceFactory> {
+ public:
+  explicit ServiceTestClient(service_manager::test::ServiceTest* test)
+      : service_manager::test::ServiceTestClient(test) {}
+  ~ServiceTestClient() override {}
+
+ protected:
+  bool OnConnect(const service_manager::ServiceInfo& remote_info,
+                 service_manager::InterfaceRegistry* registry) override {
+    registry->AddInterface<service_manager::mojom::ServiceFactory>(this);
+    return true;
+  }
+
+  void CreateService(service_manager::mojom::ServiceRequest request,
+                     const std::string& name) override {
+    if (name == device::mojom::kServiceName) {
+// TODO(leonhsl): Prepare file/io task runner for Device Service.

[blundell, 2017/03/28 12:40:47]

Can we do this in this CL?

[leonhsl(Using Gerrit), 2017/03/29 07:37:16]

Done. Before I was considering to do this when we actually need them in future
test case development :)

+#if defined(OS_ANDROID)
+      device_service_context_.reset(new service_manager::ServiceContext(
+          CreateDeviceService(nullptr, nullptr, wake_lock_context_callback_),
+          std::move(request)));
+#else
+      device_service_context_.reset(new service_manager::ServiceContext(
+          CreateDeviceService(nullptr, nullptr), std::move(request)));
+#endif
+    }
+  }
+
+  void Create(const service_manager::Identity& remote_identity,
+              service_manager::mojom::ServiceFactoryRequest request) override {
+    service_factory_bindings_.AddBinding(this, std::move(request));
+  }
+
+ private:
+  mojo::BindingSet<service_manager::mojom::ServiceFactory>
+      service_factory_bindings_;
+  std::unique_ptr<service_manager::ServiceContext> device_service_context_;
+
+  WakeLockContextCallback wake_lock_context_callback_;
+};
+
+}  // namespace
+
+DeviceServiceTestBase::DeviceServiceTestBase()
+    : ServiceTest(kTestServiceName) {}
+
+DeviceServiceTestBase::~DeviceServiceTestBase() {}
+
+std::unique_ptr<service_manager::Service>
+DeviceServiceTestBase::CreateService() {
+  return base::MakeUnique<ServiceTestClient>(this);
+}
+
+}  // namespace device