1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CONTENT_BROWSER_GAMEPAD_GAMEPAD_TEST_HELPERS_H_
6#define CONTENT_BROWSER_GAMEPAD_GAMEPAD_TEST_HELPERS_H_
7
8#include "base/memory/scoped_ptr.h"
9#include "base/message_loop/message_loop.h"
10#include "base/synchronization/lock.h"
11#include "base/synchronization/waitable_event.h"
12#include "content/browser/gamepad/gamepad_data_fetcher.h"
13#include "third_party/WebKit/public/platform/WebGamepads.h"
14
15namespace content {
16
17class GamepadService;
18
19// Data fetcher that returns canned data for the gamepad provider.
20class MockGamepadDataFetcher : public GamepadDataFetcher {
21 public:
22  // Initializes the fetcher with the given gamepad data, which will be
23  // returned when the provider queries us.
24  explicit MockGamepadDataFetcher(const blink::WebGamepads& test_data);
25
26  virtual ~MockGamepadDataFetcher();
27
28  // GamepadDataFetcher.
29  virtual void GetGamepadData(blink::WebGamepads* pads,
30                              bool devices_changed_hint) OVERRIDE;
31
32  // Blocks the current thread until the GamepadProvider reads from this
33  // fetcher on the background thread.
34  void WaitForDataRead();
35
36  // Blocks the current thread until the GamepadProvider reads from this
37  // fetcher on the background thread and issued all callbacks related to the
38  // read on the client's thread.
39  void WaitForDataReadAndCallbacksIssued();
40
41  // Updates the test data.
42  void SetTestData(const blink::WebGamepads& new_data);
43
44 private:
45  base::Lock lock_;
46  blink::WebGamepads test_data_;
47  base::WaitableEvent read_data_;
48
49  DISALLOW_COPY_AND_ASSIGN(MockGamepadDataFetcher);
50};
51
52// Base class for the other test helpers. This just sets up the system monitor.
53class GamepadTestHelper {
54 public:
55  GamepadTestHelper();
56  virtual ~GamepadTestHelper();
57
58  base::MessageLoop& message_loop() { return message_loop_; }
59
60 private:
61  // This must be constructed before the system monitor.
62  base::MessageLoop message_loop_;
63
64  DISALLOW_COPY_AND_ASSIGN(GamepadTestHelper);
65};
66
67// Constructs a GamepadService with a mock data source. This bypasses the
68// global singleton for the gamepad service.
69class GamepadServiceTestConstructor : public GamepadTestHelper {
70 public:
71  explicit GamepadServiceTestConstructor(const blink::WebGamepads& test_data);
72  virtual ~GamepadServiceTestConstructor();
73
74  GamepadService* gamepad_service() { return gamepad_service_; }
75  MockGamepadDataFetcher* data_fetcher() { return data_fetcher_; }
76
77 private:
78  // Owning pointer (can't be a scoped_ptr due to private destructor).
79  GamepadService* gamepad_service_;
80
81  // Pointer owned by the provider (which is owned by the gamepad service).
82  MockGamepadDataFetcher* data_fetcher_;
83
84  DISALLOW_COPY_AND_ASSIGN(GamepadServiceTestConstructor);
85};
86
87}  // namespace content
88
89#endif  // CONTENT_BROWSER_GAMEPAD_GAMEPAD_TEST_HELPERS_H_
90