src/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   virtual ~DeviceLightEventPumpForTesting() {}
  44
  45   void OnDidStart(base::SharedMemoryHandle renderer_handle) {
  46     DeviceLightEventPump::OnDidStart(renderer_handle);
  47   }
  48   virtual bool SendStartMessage() OVERRIDE { return true; }
  49   virtual bool SendStopMessage() OVERRIDE { return true; }
  50   virtual void FireEvent() OVERRIDE {
  51     DeviceLightEventPump::FireEvent();
  52     Stop();
  53     base::MessageLoop::current()->QuitWhenIdle();
  54   }
  55
  56  private:
  57   DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPumpForTesting);
  58 };
  59
  60 class DeviceLightEventPumpTest : public testing::Test {
  61  public:
  62   DeviceLightEventPumpTest() {
  63     EXPECT_TRUE(shared_memory_.CreateAndMapAnonymous(
  64         sizeof(DeviceLightHardwareBuffer)));
  65   }
  66
  67  protected:
  68   virtual void SetUp() OVERRIDE {
  69     const DeviceLightHardwareBuffer* null_buffer = NULL;
  70     listener_.reset(new MockDeviceLightListener);
  71     light_pump_.reset(new DeviceLightEventPumpForTesting);
  72     buffer_ = static_cast<DeviceLightHardwareBuffer*>(shared_memory_.memory());
  73     ASSERT_NE(null_buffer, buffer_);
  74     ASSERT_TRUE(shared_memory_.ShareToProcess(base::GetCurrentProcessHandle(),
  75                                               &handle_));
  76   }
  77
  78   void InitBuffer() {
  79     DeviceLightData& data = buffer_->data;
  80     data.value = 1.0;
  81   }
  82
  83   MockDeviceLightListener* listener() { return listener_.get(); }
  84   DeviceLightEventPumpForTesting* light_pump() { return light_pump_.get(); }
  85   base::SharedMemoryHandle handle() { return handle_; }
  86   DeviceLightHardwareBuffer* buffer() { return buffer_; }
  87
  88  private:
  89   scoped_ptr<MockDeviceLightListener> listener_;
  90   scoped_ptr<DeviceLightEventPumpForTesting> light_pump_;
  91   base::SharedMemoryHandle handle_;
  92   base::SharedMemory shared_memory_;
  93   DeviceLightHardwareBuffer* buffer_;
  94
  95   DISALLOW_COPY_AND_ASSIGN(DeviceLightEventPumpTest);
  96 };
  97
  98 TEST_F(DeviceLightEventPumpTest, DidStartPolling) {
  99   base::MessageLoopForUI loop;
 100
 101   InitBuffer();
 102
 103   light_pump()->SetListener(listener());
 104   light_pump()->OnDidStart(handle());
 105
 106   base::MessageLoop::current()->Run();
 107
 108   const DeviceLightData& received_data = listener()->data();
 109   EXPECT_TRUE(listener()->did_change_device_light());
 110   EXPECT_EQ(1, static_cast<double>(received_data.value));
 111 }
 112
 113 TEST_F(DeviceLightEventPumpTest, DidStartPollingValuesEqual) {
 114   base::MessageLoopForUI loop;
 115
 116   InitBuffer();
 117
 118   light_pump()->SetListener(listener());
 119   light_pump()->OnDidStart(handle());
 120
 121   base::MessageLoop::current()->Run();
 122
 123   const DeviceLightData& received_data = listener()->data();
 124   EXPECT_TRUE(listener()->did_change_device_light());
 125   EXPECT_EQ(1, static_cast<double>(received_data.value));
 126
 127   double last_seen_data = received_data.value;
 128   // Set next value to be same as previous value.
 129   buffer()->data.value = 1.0;
 130   listener()->set_did_change_device_light(false);
 131   base::MessageLoop::current()->PostTask(
 132       FROM_HERE,
 133       base::Bind(&DeviceLightEventPumpForTesting::FireEvent,
 134                  base::Unretained(light_pump())));
 135   base::MessageLoop::current()->Run();
 136
 137   // No change in device light as present value is same as previous value.
 138   EXPECT_FALSE(listener()->did_change_device_light());
 139   EXPECT_EQ(last_seen_data, static_cast<double>(received_data.value));
 140 }
 141
 142 }  // namespace content