[DeviceLight] Add renderer+common parts

content/renderer/device_sensors/device_light_event_pump_unittest.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 "device_light_event_pump.h"
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/message_loop/message_loop.h"
+#include "content/common/device_sensors/device_light_hardware_buffer.h"
+#include "content/public/test/test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/platform/WebDeviceLightListener.h"
+
+namespace content {
+
+class MockDeviceLightListener : public blink::WebDeviceLightListener {
+ public:
+  MockDeviceLightListener();
+  virtual ~MockDeviceLightListener() { }
+  virtual void didChangeDeviceLight(double) OVERRIDE;
+  bool did_change_device_light_;
+  double data_;
+};
+
+MockDeviceLightListener::MockDeviceLightListener()
+    : did_change_device_light_(false) {
+  memset(&data_, 0, sizeof(data_));
+}
+
+void MockDeviceLightListener::didChangeDeviceLight(double data) {
+  memcpy(&data_, &data, sizeof(data));
+  did_change_device_light_ = true;
+}
+
+class DeviceLightEventPumpForTesting : public DeviceLightEventPump {
+ public:
+  DeviceLightEventPumpForTesting() { }
+  virtual ~DeviceLightEventPumpForTesting() { }
+
+  void OnDidStart(base::SharedMemoryHandle renderer_handle) {
+    DeviceLightEventPump::OnDidStart(renderer_handle);
+  }
+  virtual bool SendStartMessage() OVERRIDE { return true; }
+  virtual bool SendStopMessage() OVERRIDE { return true; }
+  virtual void FireEvent() OVERRIDE {
+    DeviceLightEventPump::FireEvent();
+    Stop();
+    base::MessageLoop::current()->QuitWhenIdle();
+  }
+};
+
+class DeviceLightEventPumpTest : public testing::Test {
+ public:
+  DeviceLightEventPumpTest() {
+    EXPECT_TRUE(shared_memory_.CreateAndMapAnonymous(
+        sizeof(DeviceLightHardwareBuffer)));
+  }
+
+ protected:
+  virtual void SetUp() OVERRIDE {
+    const DeviceLightHardwareBuffer* null_buffer = NULL;
+    listener_.reset(new MockDeviceLightListener);
+    light_pump_.reset(new DeviceLightEventPumpForTesting);
+    buffer_ = static_cast<DeviceLightHardwareBuffer*>(shared_memory_.memory());
+    ASSERT_NE(null_buffer, buffer_);
+    memset(buffer_, 0, sizeof(DeviceLightHardwareBuffer));
+    ASSERT_TRUE(shared_memory_.ShareToProcess(base::GetCurrentProcessHandle(),
+        &handle_));
+  }
+
+  void InitBuffer() {
+    double& data = buffer_->data;
+    data = 1.0;
+  }
+
+  scoped_ptr<MockDeviceLightListener> listener_;
+  scoped_ptr<DeviceLightEventPumpForTesting> light_pump_;
+  base::SharedMemoryHandle handle_;
+  base::SharedMemory shared_memory_;
+  DeviceLightHardwareBuffer* buffer_;
+};
+
+TEST_F(DeviceLightEventPumpTest, DidStartPolling) {
+  base::MessageLoopForUI loop;
+
+  InitBuffer();
+
+  light_pump_->SetListener(listener_.get());
+  light_pump_->OnDidStart(handle_);
+
+  base::MessageLoop::current()->Run();
+
+  double& received_data = listener_->data_;
+  EXPECT_TRUE(listener_->did_change_device_light_);
+  EXPECT_EQ(1, static_cast<double>(received_data));
+  }
+
+}  // namespace content