[DeviceService] Replace content browser test with service test for BatteryMonitorImpl

content/browser/battery_status/battery_monitor_impl_browsertest.cc

-// Copyright 2014 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 <utility>
-
-#include "base/macros.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/test/content_browser_test.h"
-#include "content/public/test/content_browser_test_utils.h"
-#include "content/public/test/test_navigation_observer.h"
-#include "content/public/test/test_utils.h"
-#include "content/shell/browser/shell.h"
-#include "device/battery/battery_status_manager.h"
-#include "device/battery/battery_status_service.h"
-
-// These tests run against the default implementation of the BatteryMonitor
-// service, with a dummy BatteryManager set as a source of the battery
-// information. They can be run only on platforms that use the default service
-// implementation, ie. on the platforms where BatteryStatusService is used.
-
-namespace content {
-
-namespace {
-
-class FakeBatteryManager : public device::BatteryStatusManager {
- public:
-  explicit FakeBatteryManager(
-      const device::BatteryStatusService::BatteryUpdateCallback& callback)
-      : callback_(callback), battery_status_available_(true), started_(false) {}
-  ~FakeBatteryManager() override {}
-
-  // Methods from BatteryStatusManager.
-  bool StartListeningBatteryChange() override {
-    started_ = true;
-    if (battery_status_available_)
-      InvokeUpdateCallback();
-    return battery_status_available_;
-  }
-
-  void StopListeningBatteryChange() override {}
-
-  void InvokeUpdateCallback() {
-    // Invoke asynchronously to mimic the OS-specific battery managers.
-    base::ThreadTaskRunnerHandle::Get()->PostTask(
-        FROM_HERE, base::Bind(callback_, status_));
-  }
-
-  void set_battery_status(const device::mojom::BatteryStatus& status) {
-    status_ = status;
-  }
-
-  void set_battery_status_available(bool value) {
-    battery_status_available_ = value;
-  }
-
-  bool started() { return started_; }
-
- private:
-  device::BatteryStatusService::BatteryUpdateCallback callback_;
-  bool battery_status_available_;
-  bool started_;
-  device::mojom::BatteryStatus status_;
-
-  DISALLOW_COPY_AND_ASSIGN(FakeBatteryManager);
-};
-
-class BatteryMonitorImplTest : public ContentBrowserTest {
- public:
-  BatteryMonitorImplTest() : battery_manager_(NULL), battery_service_(NULL) {}
-
-  void SetUpOnMainThread() override {
-    battery_service_ = device::BatteryStatusService::GetInstance();
-
-    // We keep a raw pointer to the FakeBatteryManager, which we expect to
-    // remain valid for the lifetime of the BatteryStatusService.
-    std::unique_ptr<FakeBatteryManager> battery_manager(new FakeBatteryManager(
-        battery_service_->GetUpdateCallbackForTesting()));
-    battery_manager_ = battery_manager.get();
-
-    battery_service_->SetBatteryManagerForTesting(std::move(battery_manager));
-  }
-
-  void TearDown() override {
-    battery_service_->SetBatteryManagerForTesting(
-        std::unique_ptr<device::BatteryStatusManager>());
-    battery_manager_ = NULL;
-  }
-
-  FakeBatteryManager* battery_manager() { return battery_manager_; }
-
- private:
-  FakeBatteryManager* battery_manager_;
-  device::BatteryStatusService* battery_service_;
-
-  DISALLOW_COPY_AND_ASSIGN(BatteryMonitorImplTest);
-};
-
-IN_PROC_BROWSER_TEST_F(BatteryMonitorImplTest, BatteryManagerDefaultValues) {
-  // Set the fake battery manager to return false on start. From JavaScript
-  // request a promise for the battery status information and once it resolves
-  // check the default values and navigate to #pass.
-  battery_manager()->set_battery_status_available(false);
-  GURL test_url =
-      GetTestUrl("battery_status", "battery_status_default_test.html");
-  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);
-  EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
-  EXPECT_TRUE(battery_manager()->started());
-}
-
-IN_PROC_BROWSER_TEST_F(BatteryMonitorImplTest, BatteryManagerResolvePromise) {
-  // Set the fake battery manager to return predefined battery status values.
-  // From JavaScript request a promise for the battery status information and
-  // once it resolves check the values and navigate to #pass.
-  device::mojom::BatteryStatus status;
-  status.charging = true;
-  status.charging_time = 100;
-  status.discharging_time = std::numeric_limits<double>::infinity();
-  status.level = 0.5;
-  battery_manager()->set_battery_status(status);
-
-  GURL test_url = GetTestUrl("battery_status",
-                             "battery_status_promise_resolution_test.html");
-  NavigateToURLBlockUntilNavigationsComplete(shell(), test_url, 2);
-  EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
-  EXPECT_TRUE(battery_manager()->started());
-}
-
-IN_PROC_BROWSER_TEST_F(BatteryMonitorImplTest,
-                       BatteryManagerWithEventListener) {
-  // Set the fake battery manager to return default battery status values.
-  // From JavaScript request a promise for the battery status information.
-  // Once it resolves add an event listener for battery level change. Set
-  // battery level to 0.6 and invoke update. Check that the event listener
-  // is invoked with the correct value for level and navigate to #pass.
-  device::mojom::BatteryStatus status;
-  battery_manager()->set_battery_status(status);
-
-  TestNavigationObserver same_tab_observer(shell()->web_contents(), 2);
-  GURL test_url =
-      GetTestUrl("battery_status", "battery_status_event_listener_test.html");
-  shell()->LoadURL(test_url);
-  same_tab_observer.Wait();
-  EXPECT_EQ("resolved", shell()->web_contents()->GetLastCommittedURL().ref());
-
-  TestNavigationObserver same_tab_observer2(shell()->web_contents(), 1);
-  status.level = 0.6;
-  battery_manager()->set_battery_status(status);
-  battery_manager()->InvokeUpdateCallback();
-  same_tab_observer2.Wait();
-  EXPECT_EQ("pass", shell()->web_contents()->GetLastCommittedURL().ref());
-  EXPECT_TRUE(battery_manager()->started());
-}
-
-}  //  namespace
-
-}  //  namespace content