content/renderer/device_sensors/device_light_event_pump_unittest.cc

   1 // Copyright 2014 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 "device_light_event_pump.h"
   6
   7 #include "base/message_loop/message_loop.h"
   8 #include "content/common/device_sensors/device_light_hardware_buffer.h"
   9 #include "content/public/test/test_utils.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11 #include "third_party/WebKit/public/platform/WebDeviceLightListener.h"
  12
  13 namespace content {
  14
  15 class MockDeviceLightListener : public blink::WebDeviceLightListener {
  16  public:
  17   MockDeviceLightListener() : did_change_device_light_(false) {}
  18   virtual ~MockDeviceLightListener() {}
  19
  20   virtual void didChangeDeviceLight(double value) override {
  21     data_.value = value;
  22     did_change_device_light_ = true;
  23   }
  24
  25   bool did_change_device_light() const { return did_change_device_light_; }
  26
  27   void set_did_change_device_light(bool value) {
  28     did_change_device_light_ = value;
  29   }
  30
  31   const DeviceLightData& data() const { return data_; }
  32
  33  private:
  34   bool did_change_device_light_;
  35   DeviceLightData data_;
  36
  37   DISALLOW_COPY_AND_ASSIGN(MockDeviceLightListener);
  38 };
  39
  40 class DeviceLightEventPumpForTesting : public DeviceLightEventPump {
  41  public:
  42   DeviceLightEventPumpForTesting()
  43       : DeviceLightEventPump(0) {}
  44   ~DeviceLightEventPumpForTesting() override {}
  45
  46   void OnDidStart(base::SharedMemoryHandle renderer_handle) {
  47     DeviceLightEventPump::OnDidStart(renderer_handle);
  48   }
  49   void SendStartMessage() override {}
  50   void SendStopMessage() override {}
  51   void FireEvent() override {
  52     DeviceLightEventPump::FireEvent();
  53     Stop();
  54     base::MessageLoop::current()->QuitWhenIdle();
  55   }
  56
  57  private:
  58   DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPumpForTesting);
  59 };
  60
  61 class DeviceLightEventPumpTest : public testing::Test {
  62  public:
  63   DeviceLightEventPumpTest() {
  64     EXPECT_TRUE(shared_memory_.CreateAndMapAnonymous(
  65         sizeof(DeviceLightHardwareBuffer)));
  66   }
  67
  68  protected:
  69   void SetUp() override {
  70     const DeviceLightHardwareBuffer* null_buffer = nullptr;
  71     listener_.reset(new MockDeviceLightListener);
  72     light_pump_.reset(new DeviceLightEventPumpForTesting);
  73     buffer_ = static_cast<DeviceLightHardwareBuffer*>(shared_memory_.memory());
  74     ASSERT_NE(null_buffer, buffer_);
  75     ASSERT_TRUE(shared_memory_.ShareToProcess(base::GetCurrentProcessHandle(),
  76                                               &handle_));
  77   }
  78
  79   void InitBuffer() {
  80     DeviceLightData& data = buffer_->data;
  81     data.value = 1.0;
  82   }
  83
  84   MockDeviceLightListener* listener() { return listener_.get(); }
  85   DeviceLightEventPumpForTesting* light_pump() { return light_pump_.get(); }
  86   base::SharedMemoryHandle handle() { return handle_; }
  87   DeviceLightHardwareBuffer* buffer() { return buffer_; }
  88
  89  private:
  90   scoped_ptr<MockDeviceLightListener> listener_;
  91   scoped_ptr<DeviceLightEventPumpForTesting> light_pump_;
  92   base::SharedMemoryHandle handle_;
  93   base::SharedMemory shared_memory_;
  94   DeviceLightHardwareBuffer* buffer_;
  95
  96   DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPumpTest);
  97 };
  98
  99 TEST_F(DeviceLightEventPumpTest, DidStartPolling) {
 100   base::MessageLoopForUI loop;
 101
 102   InitBuffer();
 103
 104   light_pump()->Start(listener());
 105   light_pump()->OnDidStart(handle());
 106
 107   base::MessageLoop::current()->Run();
 108
 109   const DeviceLightData& received_data = listener()->data();
 110   EXPECT_TRUE(listener()->did_change_device_light());
 111   EXPECT_EQ(1, static_cast<double>(received_data.value));
 112 }
 113
 114 TEST_F(DeviceLightEventPumpTest, FireAllNullEvent) {
 115   base::MessageLoopForUI loop;
 116
 117   light_pump()->Start(listener());
 118   light_pump()->OnDidStart(handle());
 119
 120   base::MessageLoop::current()->Run();
 121
 122   const DeviceLightData& received_data = listener()->data();
 123   EXPECT_TRUE(listener()->did_change_device_light());
 124   EXPECT_FALSE(received_data.value);
 125 }
 126
 127 TEST_F(DeviceLightEventPumpTest, DidStartPollingValuesEqual) {
 128   base::MessageLoopForUI loop;
 129
 130   InitBuffer();
 131
 132   light_pump()->Start(listener());
 133   light_pump()->OnDidStart(handle());
 134
 135   base::MessageLoop::current()->Run();
 136
 137   const DeviceLightData& received_data = listener()->data();
 138   EXPECT_TRUE(listener()->did_change_device_light());
 139   EXPECT_EQ(1, static_cast<double>(received_data.value));
 140
 141   double last_seen_data = received_data.value;
 142   // Set next value to be same as previous value.
 143   buffer()->data.value = 1.0;
 144   listener()->set_did_change_device_light(false);
 145
 146   // Reset the pump's listener.
 147   light_pump()->Start(listener());
 148
 149   base::MessageLoop::current()->PostTask(
 150       FROM_HERE,
 151       base::Bind(&DeviceLightEventPumpForTesting::FireEvent,
 152                  base::Unretained(light_pump())));
 153   base::MessageLoop::current()->Run();
 154
 155   // No change in device light as present value is same as previous value.
 156   EXPECT_FALSE(listener()->did_change_device_light());
 157   EXPECT_EQ(last_seen_data, static_cast<double>(received_data.value));
 158 }
 159
 160 }  // namespace content