Add struct_traits and typemap for blink::WebGamepad

device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc

Index: device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
diff --git a/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc b/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..29c796bcad29606cd936b40785deba0487a26487
--- /dev/null
+++ b/device/gamepad/public/interfaces/gamepad_struct_traits_unittest.cc
@@ -0,0 +1,234 @@
+// Copyright 2016 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 "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
+#include "device/gamepad/public/interfaces/gamepad_struct_traits_test.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/interface_request.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/platform/WebGamepad.h"
+
+namespace device {
+
+namespace {
+
+enum GamepadTestDataType {
+  GamepadCommon = 0,
+  GamepadPose_HasOrientation = 1,
+  GamepadPose_HasPosition = 2,
+  GamepadPose_Null = 3,
+};
+
+blink::WebGamepad GetWebGamepadInstance(GamepadTestDataType type) {
+  blink::WebGamepadButton wgb(true, false, 1.0f);
+
+  blink::WebGamepadVector wgv;
+  memset(&wgv, 0, sizeof(blink::WebGamepadVector));
+  wgv.notNull = true;
+  wgv.x = wgv.y = wgv.z = 1.0f;
+
+  blink::WebGamepadQuaternion wgq;
+  memset(&wgq, 0, sizeof(blink::WebGamepadQuaternion));
+  wgq.notNull = true;
+  wgq.x = wgq.y = wgq.z = wgq.w = 2.0f;
+
+  blink::WebGamepadPose wgp;
+  memset(&wgp, 0, sizeof(blink::WebGamepadPose));
+  if (type == GamepadPose_Null) {
+    wgp.notNull = false;
+  } else if (type == GamepadCommon) {
+    wgp.notNull = wgp.hasOrientation = wgp.hasPosition = true;
+    wgp.orientation = wgq;
+    wgp.position = wgv;
+    wgp.angularAcceleration = wgv;
+  } else if (type == GamepadPose_HasOrientation) {
+    wgp.notNull = wgp.hasOrientation = true;
+    wgp.hasPosition = false;
+    wgp.orientation = wgq;
+    wgp.angularAcceleration = wgv;
+  } else if (type == GamepadPose_HasPosition) {
+    wgp.notNull = wgp.hasPosition = true;
+    wgp.hasOrientation = false;
+    wgp.position = wgv;
+    wgp.angularAcceleration = wgv;
+  }
+
+  blink::WebUChar wch[blink::WebGamepad::mappingLengthCap] = {
+      1,    8,    9,     127,   128,   1024,  1025,  1949,
+      2047, 2048, 16383, 16384, 20000, 32767, 32768, 65535};
+
+  blink::WebGamepad send;
+  memset(&send, 0, sizeof(blink::WebGamepad));
+
+  send.connected = true;
+  for (size_t i = 0; i < blink::WebGamepad::mappingLengthCap; i++) {
+    send.id[i] = send.mapping[i] = wch[i];
+  }
+  send.timestamp = 1234567890123456789ULL;
+  send.axesLength = 0U;
+  for (size_t i = 0; i < blink::WebGamepad::axesLengthCap; i++) {
+    send.axesLength++;
+    send.axes[i] = 1.0;
+  }
+  send.buttonsLength = 0U;
+  for (size_t i = 0; i < blink::WebGamepad::buttonsLengthCap; i++) {
+    send.buttonsLength++;
+    send.buttons[i] = wgb;
+  }
+  send.pose = wgp;
+  send.hand = blink::WebGamepadHand::GamepadHandRight;
+  send.displayId = static_cast<unsigned short>(16);
+
+  return send;
+}
+
+bool isWebGamepadButtonEqual(const blink::WebGamepadButton& lhs,
+                             const blink::WebGamepadButton& rhs) {
+  return (lhs.pressed == rhs.pressed && lhs.touched == rhs.touched &&
+          lhs.value == rhs.value);
+}
+
+bool isWebGamepadVectorEqual(const blink::WebGamepadVector& lhs,
+                             const blink::WebGamepadVector& rhs) {
+  return ((lhs.notNull == false && rhs.notNull == false) ||
+          (lhs.notNull == rhs.notNull && lhs.x == rhs.x && lhs.y == rhs.y &&
+           lhs.z == rhs.z));
+}
+
+bool isWebGamepadQuaternionEqual(const blink::WebGamepadQuaternion& lhs,
+                                 const blink::WebGamepadQuaternion& rhs) {
+  return ((lhs.notNull == false && rhs.notNull == false) ||
+          (lhs.notNull == rhs.notNull && lhs.x == rhs.x && lhs.y == rhs.y &&
+           lhs.z == rhs.z && lhs.w == rhs.w));
+}
+
+bool isWebGamepadPoseEqual(const blink::WebGamepadPose& lhs,
+                           const blink::WebGamepadPose& rhs) {
+  if (lhs.notNull == false && rhs.notNull == false) {
+    return true;
+  }
+  if (lhs.notNull != rhs.notNull || lhs.hasOrientation != rhs.hasOrientation ||
+      lhs.hasPosition != rhs.hasPosition ||
+      !isWebGamepadVectorEqual(lhs.angularVelocity, rhs.angularVelocity) ||
+      !isWebGamepadVectorEqual(lhs.linearVelocity, rhs.linearVelocity) ||
+      !isWebGamepadVectorEqual(lhs.angularAcceleration,
+                               rhs.angularAcceleration) ||
+      !isWebGamepadVectorEqual(lhs.linearAcceleration,
+                               rhs.linearAcceleration)) {
+    return false;
+  }
+  if (lhs.hasOrientation &&
+      !isWebGamepadQuaternionEqual(lhs.orientation, rhs.orientation)) {
+    return false;
+  }
+  if (lhs.hasPosition && !isWebGamepadVectorEqual(lhs.position, rhs.position)) {
+    return false;
+  }
+  return true;
+}
+
+bool isWebGamepadEqual(const blink::WebGamepad& send,
+                       const blink::WebGamepad& echo) {
+  if (send.connected != echo.connected || send.timestamp != echo.timestamp ||
+      send.axesLength != echo.axesLength ||
+      send.buttonsLength != echo.buttonsLength ||
+      !isWebGamepadPoseEqual(send.pose, echo.pose) || send.hand != echo.hand ||
+      send.displayId != echo.displayId) {
+    return false;
+  }
+  for (size_t i = 0; i < blink::WebGamepad::idLengthCap; i++) {
+    if (send.id[i] != echo.id[i]) {
+      return false;
+    }
+  }
+  for (size_t i = 0; i < blink::WebGamepad::axesLengthCap; i++) {
+    if (send.axes[i] != echo.axes[i]) {
+      return false;
+    }
+  }
+  for (size_t i = 0; i < blink::WebGamepad::buttonsLengthCap; i++) {
+    if (!isWebGamepadButtonEqual(send.buttons[i], echo.buttons[i])) {
+      return false;
+    }
+  }
+  for (size_t i = 0; i < blink::WebGamepad::mappingLengthCap; i++) {
+    if (send.mapping[i] != echo.mapping[i]) {
+      return false;
+    }
+  }
+  return true;
+}
+
+void ExpectWebGamepad(const blink::WebGamepad& send,
+                      const base::Closure& closure,
+                      const blink::WebGamepad& echo) {
+  EXPECT_EQ(true, isWebGamepadEqual(send, echo));
+  closure.Run();
+}
+
+}  // namespace
+
+class GamepadStructTraitsTest : public testing::Test,
+                                public device::mojom::GamepadStructTraitsTest {
+ protected:
+  GamepadStructTraitsTest() : binding_(this) {}
+
+  void PassGamepad(const blink::WebGamepad& send,
+                   const PassGamepadCallback& callback) override {
+    callback.Run(send);
+  }
+
+  device::mojom::GamepadStructTraitsTestPtr GetGamepadStructTraitsTestProxy() {
+    return binding_.CreateInterfacePtrAndBind();
+  }
+
+ private:
+  base::MessageLoop message_loop_;
+  mojo::Binding<device::mojom::GamepadStructTraitsTest> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(GamepadStructTraitsTest);
+};
+
+TEST_F(GamepadStructTraitsTest, GamepadCommon) {
+  blink::WebGamepad send = GetWebGamepadInstance(GamepadCommon);
+  base::RunLoop loop;
+  device::mojom::GamepadStructTraitsTestPtr proxy =
+      GetGamepadStructTraitsTestProxy();
+  proxy->PassGamepad(send,
+                     base::Bind(&ExpectWebGamepad, send, loop.QuitClosure()));
+  loop.Run();
+}
+
+TEST_F(GamepadStructTraitsTest, GamepadPose_HasOrientation) {
+  blink::WebGamepad send = GetWebGamepadInstance(GamepadPose_HasOrientation);
+  base::RunLoop loop;
+  device::mojom::GamepadStructTraitsTestPtr proxy =
+      GetGamepadStructTraitsTestProxy();
+  proxy->PassGamepad(send,
+                     base::Bind(&ExpectWebGamepad, send, loop.QuitClosure()));
+  loop.Run();
+}
+
+TEST_F(GamepadStructTraitsTest, GamepadPose_HasPosition) {
+  blink::WebGamepad send = GetWebGamepadInstance(GamepadPose_HasPosition);
+  base::RunLoop loop;
+  device::mojom::GamepadStructTraitsTestPtr proxy =
+      GetGamepadStructTraitsTestProxy();
+  proxy->PassGamepad(send,
+                     base::Bind(&ExpectWebGamepad, send, loop.QuitClosure()));
+  loop.Run();
+}
+
+TEST_F(GamepadStructTraitsTest, GamepadPose_Null) {
+  blink::WebGamepad send = GetWebGamepadInstance(GamepadPose_Null);
+  base::RunLoop loop;
+  device::mojom::GamepadStructTraitsTestPtr proxy =
+      GetGamepadStructTraitsTestProxy();
+  proxy->PassGamepad(send,
+                     base::Bind(&ExpectWebGamepad, send, loop.QuitClosure()));
+  loop.Run();
+}
+
+}  // namespace device