content/browser/gamepad/gamepad_provider_unittest.cc

   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 #include "base/memory/scoped_ptr.h"
   6 #include "base/memory/weak_ptr.h"
   7 #include "content/browser/gamepad/gamepad_data_fetcher.h"
   8 #include "content/browser/gamepad/gamepad_provider.h"
   9 #include "content/browser/gamepad/gamepad_test_helpers.h"
  10 #include "content/common/gamepad_hardware_buffer.h"
  11 #include "content/common/gamepad_messages.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13
  14 namespace content {
  15
  16 namespace {
  17
  18 using blink::WebGamepads;
  19
  20 // Helper class to generate and record user gesture callbacks.
  21 class UserGestureListener {
  22  public:
  23   UserGestureListener()
  24       : weak_factory_(this),
  25         has_user_gesture_(false) {
  26   }
  27
  28   base::Closure GetClosure() {
  29     return base::Bind(&UserGestureListener::GotUserGesture,
  30                       weak_factory_.GetWeakPtr());
  31   }
  32
  33   bool has_user_gesture() const { return has_user_gesture_; }
  34
  35  private:
  36   void GotUserGesture() {
  37     has_user_gesture_ = true;
  38   }
  39
  40   base::WeakPtrFactory<UserGestureListener> weak_factory_;
  41   bool has_user_gesture_;
  42 };
  43
  44 // Main test fixture
  45 class GamepadProviderTest : public testing::Test, public GamepadTestHelper {
  46  public:
  47   GamepadProvider* CreateProvider(const WebGamepads& test_data) {
  48     mock_data_fetcher_ = new MockGamepadDataFetcher(test_data);
  49     provider_.reset(new GamepadProvider(
  50         scoped_ptr<GamepadDataFetcher>(mock_data_fetcher_)));
  51     return provider_.get();
  52   }
  53
  54  protected:
  55   GamepadProviderTest() {
  56   }
  57
  58   scoped_ptr<GamepadProvider> provider_;
  59
  60   // Pointer owned by the provider.
  61   MockGamepadDataFetcher* mock_data_fetcher_;
  62
  63   DISALLOW_COPY_AND_ASSIGN(GamepadProviderTest);
  64 };
  65
  66 // Crashes. http://crbug.com/106163
  67 TEST_F(GamepadProviderTest, PollingAccess) {
  68   WebGamepads test_data;
  69   test_data.length = 1;
  70   test_data.items[0].connected = true;
  71   test_data.items[0].timestamp = 0;
  72   test_data.items[0].buttonsLength = 1;
  73   test_data.items[0].axesLength = 2;
  74   test_data.items[0].buttons[0].value = 1.f;
  75   test_data.items[0].buttons[0].pressed = true;
  76   test_data.items[0].axes[0] = -1.f;
  77   test_data.items[0].axes[1] = .5f;
  78
  79   GamepadProvider* provider = CreateProvider(test_data);
  80   provider->Resume();
  81
  82   message_loop().RunUntilIdle();
  83
  84   mock_data_fetcher_->WaitForDataRead();
  85
  86   // Renderer-side, pull data out of poll buffer.
  87   base::SharedMemoryHandle handle = provider->GetSharedMemoryHandleForProcess(
  88       base::GetCurrentProcessHandle());
  89   scoped_ptr<base::SharedMemory> shared_memory(
  90       new base::SharedMemory(handle, true));
  91   EXPECT_TRUE(shared_memory->Map(sizeof(GamepadHardwareBuffer)));
  92   void* mem = shared_memory->memory();
  93
  94   GamepadHardwareBuffer* hwbuf = static_cast<GamepadHardwareBuffer*>(mem);
  95   // See gamepad_hardware_buffer.h for details on the read discipline.
  96   WebGamepads output;
  97
  98   base::subtle::Atomic32 version;
  99   do {
 100     version = hwbuf->sequence.ReadBegin();
 101     memcpy(&output, &hwbuf->buffer, sizeof(output));
 102   } while (hwbuf->sequence.ReadRetry(version));
 103
 104   EXPECT_EQ(1u, output.length);
 105   EXPECT_EQ(1u, output.items[0].buttonsLength);
 106   EXPECT_EQ(1.f, output.items[0].buttons[0].value);
 107   EXPECT_EQ(true, output.items[0].buttons[0].pressed);
 108   EXPECT_EQ(2u, output.items[0].axesLength);
 109   EXPECT_EQ(-1.f, output.items[0].axes[0]);
 110   EXPECT_EQ(0.5f, output.items[0].axes[1]);
 111 }
 112
 113 // Tests that waiting for a user gesture works properly.
 114 TEST_F(GamepadProviderTest, UserGesture) {
 115   WebGamepads no_button_data;
 116   no_button_data.length = 1;
 117   no_button_data.items[0].connected = true;
 118   no_button_data.items[0].timestamp = 0;
 119   no_button_data.items[0].buttonsLength = 1;
 120   no_button_data.items[0].axesLength = 2;
 121   no_button_data.items[0].buttons[0].value = 0.f;
 122   no_button_data.items[0].buttons[0].pressed = false;
 123   no_button_data.items[0].axes[0] = -1.f;
 124   no_button_data.items[0].axes[1] = .5f;
 125
 126   WebGamepads button_down_data = no_button_data;
 127   button_down_data.items[0].buttons[0].value = 1.f;
 128   button_down_data.items[0].buttons[0].pressed = true;
 129
 130   UserGestureListener listener;
 131   GamepadProvider* provider = CreateProvider(no_button_data);
 132   provider->Resume();
 133
 134   // Register for a user gesture and make sure the provider reads it twice
 135   // see below for why).
 136   provider->RegisterForUserGesture(listener.GetClosure());
 137   mock_data_fetcher_->WaitForDataRead();
 138   mock_data_fetcher_->WaitForDataRead();
 139
 140   // It should not have issued our callback.
 141   message_loop().RunUntilIdle();
 142   EXPECT_FALSE(listener.has_user_gesture());
 143
 144   // Set a button down and wait for it to be read twice.
 145   //
 146   // We wait for two reads before calling RunAllPending because the provider
 147   // will read the data on the background thread (setting the event) and *then*
 148   // will issue the callback on our thread. Waiting for it to read twice
 149   // ensures that it was able to issue callbacks for the first read (if it
 150   // issued one) before we try to check for it.
 151   mock_data_fetcher_->SetTestData(button_down_data);
 152   mock_data_fetcher_->WaitForDataRead();
 153   mock_data_fetcher_->WaitForDataRead();
 154
 155   // It should have issued our callback.
 156   message_loop().RunUntilIdle();
 157   EXPECT_TRUE(listener.has_user_gesture());
 158 }
 159
 160 }  // namespace
 161
 162 }  // namespace content