Implement Device Orientation using shared memory in content/renderer.

content/renderer/device_orientation/device_orientation_event_pump_unittest.cc

+// Copyright 2013 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_orientation_event_pump.h"
+
+#include "base/logging.h"
+#include "base/message_loop/message_loop.h"
+#include "content/common/device_orientation_hardware_buffer.h"
+#include "content/public/test/test_utils.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/platform/WebDeviceOrientationListener.h"
+
+namespace content {
+
+class MockDeviceOrientationListener
+    : public WebKit::WebDeviceOrientationListener {
+ public:
+  MockDeviceOrientationListener();
+  virtual ~MockDeviceOrientationListener() { }
+  virtual void didChangeDeviceOrientation(
+      const WebKit::WebDeviceOrientationData&) OVERRIDE;
+  void ResetDidChangeOrientation();
+  bool did_change_device_orientation_;
+  WebKit::WebDeviceOrientationData data_;
+};
+
+MockDeviceOrientationListener::MockDeviceOrientationListener()
+    : did_change_device_orientation_(false) {
+  memset(&data_, 0, sizeof(data_));
+}
+
+void MockDeviceOrientationListener::didChangeDeviceOrientation(
+    const WebKit::WebDeviceOrientationData& data) {
+  memcpy(&data_, &data, sizeof(data));
+  did_change_device_orientation_ = true;
+}
+
+void MockDeviceOrientationListener::ResetDidChangeOrientation() {
+  did_change_device_orientation_ = false;
+}
+
+class DeviceOrientationEventPumpForTesting : public DeviceOrientationEventPump {
+ public:
+  DeviceOrientationEventPumpForTesting() { }
+  virtual ~DeviceOrientationEventPumpForTesting() { }
+
+  void OnDidStart(base::SharedMemoryHandle renderer_handle) {
+    DeviceOrientationEventPump::OnDidStart(renderer_handle);
+  }
+  virtual bool SendStartMessage() OVERRIDE { return true; }
+  virtual bool SendStopMessage() OVERRIDE { return true; }
+};
+
+class DeviceOrientationEventPumpTest : public testing::Test {
+ public:
+  DeviceOrientationEventPumpTest() {
+      EXPECT_TRUE(shared_memory_.CreateAndMapAnonymous(
+          sizeof(DeviceOrientationHardwareBuffer)));
+  }
+
+ protected:
+  virtual void SetUp() OVERRIDE {
+    listener_.reset(new MockDeviceOrientationListener);
+    orientation_pump_.reset(new DeviceOrientationEventPumpForTesting);
+    buffer_ = static_cast<DeviceOrientationHardwareBuffer*>(
+        shared_memory_.memory());
+    memset(buffer_, 0, sizeof(DeviceOrientationHardwareBuffer));
+    shared_memory_.ShareToProcess(base::kNullProcessHandle, &handle_);
+  }
+
+  void InitBuffer() {
+    WebKit::WebDeviceOrientationData& data = buffer_->data;
+    data.alpha = 1;
+    data.hasAlpha = true;
+    data.beta = 2;
+    data.hasBeta = true;
+    data.gamma = 3;
+    data.hasGamma = true;
+    data.allAvailableSensorsAreActive = true;
+  }
+
+  scoped_ptr<MockDeviceOrientationListener> listener_;
+  scoped_ptr<DeviceOrientationEventPumpForTesting> orientation_pump_;
+  base::SharedMemoryHandle handle_;
+  base::SharedMemory shared_memory_;
+  DeviceOrientationHardwareBuffer* buffer_;
+};
+
+
+TEST_F(DeviceOrientationEventPumpTest, DoesPolling) {
+  base::MessageLoop loop(base::MessageLoop::TYPE_UI);
+  InitBuffer();
+
+  orientation_pump_->SetListener(listener_.get());
+  orientation_pump_->OnDidStart(handle_);
+  base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(
+          orientation_pump_->GetDelayMillis() * 2));
+  RunAllPendingInMessageLoop();
+  orientation_pump_->SetListener(0);
+
+  WebKit::WebDeviceOrientationData& received_data = listener_->data_;
+  EXPECT_TRUE(listener_->did_change_device_orientation_);
+  EXPECT_TRUE(received_data.allAvailableSensorsAreActive);
+  EXPECT_EQ(1, (double)received_data.alpha);
+  EXPECT_TRUE(received_data.hasAlpha);
+  EXPECT_EQ(2, (double)received_data.beta);
+  EXPECT_TRUE(received_data.hasBeta);
+  EXPECT_EQ(3, (double)received_data.gamma);
+  EXPECT_TRUE(received_data.hasGamma);
+}
+
+TEST_F(DeviceOrientationEventPumpTest, UpdateRespectsOrientationThreshold) {
+  base::MessageLoop loop(base::MessageLoop::TYPE_UI);
+  InitBuffer();
+
+  orientation_pump_->SetListener(listener_.get());
+  orientation_pump_->OnDidStart(handle_);
+  base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(
+      orientation_pump_->GetDelayMillis() * 2));
+  RunAllPendingInMessageLoop();
+
+  WebKit::WebDeviceOrientationData& received_data = listener_->data_;
+  EXPECT_TRUE(listener_->did_change_device_orientation_);
+  EXPECT_TRUE(received_data.allAvailableSensorsAreActive);
+  EXPECT_EQ(1, (double)received_data.alpha);
+  EXPECT_TRUE(received_data.hasAlpha);
+  EXPECT_EQ(2, (double)received_data.beta);
+  EXPECT_TRUE(received_data.hasBeta);
+  EXPECT_EQ(3, (double)received_data.gamma);
+  EXPECT_TRUE(received_data.hasGamma);
+
+  buffer_->data.alpha =
+      1 + DeviceOrientationEventPump::kOrientationThreshold / 2.0;
+  listener_->ResetDidChangeOrientation();
+
+  base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(
+      orientation_pump_->GetDelayMillis() * 2));
+  RunAllPendingInMessageLoop();
+
+  EXPECT_FALSE(listener_->did_change_device_orientation_);
+  EXPECT_TRUE(received_data.allAvailableSensorsAreActive);
+  EXPECT_EQ(1, (double)received_data.alpha);
+  EXPECT_TRUE(received_data.hasAlpha);
+  EXPECT_EQ(2, (double)received_data.beta);
+  EXPECT_TRUE(received_data.hasBeta);
+  EXPECT_EQ(3, (double)received_data.gamma);
+  EXPECT_TRUE(received_data.hasGamma);
+
+  buffer_->data.alpha =
+      1 + DeviceOrientationEventPump::kOrientationThreshold;
+  listener_->ResetDidChangeOrientation();
+
+  base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(
+      orientation_pump_->GetDelayMillis() * 2));
+  RunAllPendingInMessageLoop();
+  orientation_pump_->SetListener(0);
+
+  EXPECT_TRUE(listener_->did_change_device_orientation_);
+  EXPECT_EQ(1 + DeviceOrientationEventPump::kOrientationThreshold,
+      (double)received_data.alpha);
+}
+
+}  // namespace content