exo: Implement wayland gamepad support

components/exo/gamepads_unittest.cc

+// Copyright 2015 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 "components/exo/gamepads.h"
+#include "components/exo/gamepads_delegate.h"
+#include "components/exo/test/exo_test_base.h"
+#include "device/gamepad/gamepad_test_helpers.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace exo {
+namespace {
+
+class MockGamepadsDelegate : public GamepadsDelegate {
+ public:
+  MockGamepadsDelegate() {}
+
+  // Overridden from GamepadsDelegate:
+  MOCK_METHOD1(OnGamepadsDestroying, void(Gamepads*));
+
+  MOCK_METHOD1(OnConnected, void(int));
+  MOCK_METHOD1(OnDisconnected, void(int));
+
+  MOCK_METHOD3(OnAxis, void(int, int, double));
+  MOCK_METHOD4(OnButton, void(int, int, bool, double));
+  MOCK_METHOD0(OnFrame, void());
+};
+
+class GamepadsTests : public testing::Test, public device::GamepadTestHelper {
+ public:
+  GamepadsTests() {}
+
+  void InitializeGamepads(MockGamepadsDelegate* delegate) {
+    blink::WebGamepads initial_data;
+    mock_data_fetcher_ = new device::MockGamepadDataFetcher(initial_data);
+
+    gamepads_.reset(new Gamepads(
+        delegate,
+        std::unique_ptr<device::GamepadDataFetcher>(mock_data_fetcher_)));
+  }
+
+  void DestroyGamepads(MockGamepadsDelegate* delegate) {
+    EXPECT_CALL(*delegate, OnGamepadsDestroying(testing::_)).Times(1);
+    gamepads_.reset();
+  }
+
+  void SetDataAndWaitForDelegate(const blink::WebGamepads& new_data) {
+    mock_data_fetcher_->SetTestData(new_data);
+    // Wait for 2 polling cycles for data to be read and callbacks
+    // to be processed.
+    for (int i = 0; i < 2; ++i) {
+      mock_data_fetcher_->WaitForDataRead();
+      message_loop().RunUntilIdle();
+    }
+  }
+
+ protected:
+  std::unique_ptr<Gamepads> gamepads_;
+
+  // Pointer owned by the gamepads instance.
+  device::MockGamepadDataFetcher* mock_data_fetcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(GamepadsTests);
+};
+
+TEST_F(GamepadsTests, ConnectDisconnect) {
+  MockGamepadsDelegate delegate;
+  InitializeGamepads(&delegate);
+
+  blink::WebGamepads no_gamepads;
+  blink::WebGamepads one_gamepad;
+  one_gamepad.length = 1;
+  one_gamepad.items[0].connected = true;
+  one_gamepad.items[0].timestamp = 1;
+  one_gamepad.items[0].buttonsLength = 1;
+  one_gamepad.items[0].buttons[0].pressed = true;
+  one_gamepad.items[0].buttons[0].value = 1.0f;
+
+  // Gamepad connected
+  EXPECT_CALL(delegate, OnConnected(0)).Times(1);
+  EXPECT_CALL(delegate, OnButton(0, 0, true, 1.0f)).Times(1);
+  EXPECT_CALL(delegate, OnFrame()).Times(1);
+  SetDataAndWaitForDelegate(one_gamepad);
+
+  // Gamepad disconnected
+  EXPECT_CALL(delegate, OnDisconnected(0)).Times(1);
+  SetDataAndWaitForDelegate(no_gamepads);
+
+  DestroyGamepads(&delegate);
+}
+
+TEST_F(GamepadsTests, AxisMove) {
+  MockGamepadsDelegate delegate;
+  InitializeGamepads(&delegate);
+
+  blink::WebGamepads axis_moved;
+  axis_moved.length = 1;
+  axis_moved.items[0].connected = true;
+  axis_moved.items[0].timestamp = 1;
+  axis_moved.items[0].axesLength = 1;
+  axis_moved.items[0].axes[0] = 1.0;
+
+  // Gamepad connected
+  EXPECT_CALL(delegate, OnConnected(0)).Times(1);
+  EXPECT_CALL(delegate, OnAxis(0, 0, 1.0)).Times(1);
+  EXPECT_CALL(delegate, OnFrame()).Times(1);
+  SetDataAndWaitForDelegate(axis_moved);
+
+  DestroyGamepads(&delegate);
+}
+
+}  // namespace
+}  // namespace exo