src/dawn/tests/unittests/wire/WireErrorCallbackTests.cpp - dawn - Git at Google

 // Copyright 2019 The Dawn & Tint Authors
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 // 1. Redistributions of source code must retain the above copyright notice, this
 //    list of conditions and the following disclaimer.
 //
 // 2. Redistributions in binary form must reproduce the above copyright notice,
 //    this list of conditions and the following disclaimer in the documentation
 //    and/or other materials provided with the distribution.
 //
 // 3. Neither the name of the copyright holder nor the names of its
 //    contributors may be used to endorse or promote products derived from
 //    this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #include <memory>
 #include <utility>

 #include "dawn/common/FutureUtils.h"
 #include "dawn/tests/unittests/wire/WireFutureTest.h"
 #include "dawn/tests/unittests/wire/WireTest.h"
 #include "dawn/wire/WireClient.h"

 namespace dawn::wire {
 namespace {

 using testing::_;
 using testing::DoAll;
 using testing::InvokeWithoutArgs;
 using testing::Mock;
 using testing::Return;
 using testing::SaveArg;
 using testing::StrEq;
 using testing::StrictMock;

 // Mock classes to add expectations on the wire calling callbacks
 class MockDeviceErrorCallback {
   public:
     MOCK_METHOD(void, Call, (WGPUErrorType type, const char* message, void* userdata));
 };

 std::unique_ptr<StrictMock<MockDeviceErrorCallback>> mockDeviceErrorCallback;
 void ToMockDeviceErrorCallback(WGPUErrorType type, const char* message, void* userdata) {
     mockDeviceErrorCallback->Call(type, message, userdata);
 }

 class MockDeviceLoggingCallback {
   public:
     MOCK_METHOD(void, Call, (WGPULoggingType type, const char* message, void* userdata));
 };

 std::unique_ptr<StrictMock<MockDeviceLoggingCallback>> mockDeviceLoggingCallback;
 void ToMockDeviceLoggingCallback(WGPULoggingType type, const char* message, void* userdata) {
     mockDeviceLoggingCallback->Call(type, message, userdata);
 }

 class MockDeviceLostCallback {
   public:
     MOCK_METHOD(void, Call, (WGPUDeviceLostReason reason, const char* message, void* userdata));
 };

 std::unique_ptr<StrictMock<MockDeviceLostCallback>> mockDeviceLostCallback;
 void ToMockDeviceLostCallback(WGPUDeviceLostReason reason, const char* message, void* userdata) {
     mockDeviceLostCallback->Call(reason, message, userdata);
 }

 class WireErrorCallbackTests : public WireTest {
   public:
     WireErrorCallbackTests() {}
     ~WireErrorCallbackTests() override = default;

     void SetUp() override {
         WireTest::SetUp();

         mockDeviceErrorCallback = std::make_unique<StrictMock<MockDeviceErrorCallback>>();
         mockDeviceLoggingCallback = std::make_unique<StrictMock<MockDeviceLoggingCallback>>();
         mockDeviceLostCallback = std::make_unique<StrictMock<MockDeviceLostCallback>>();
     }

     void TearDown() override {
         WireTest::TearDown();

         mockDeviceErrorCallback = nullptr;
         mockDeviceLoggingCallback = nullptr;
         mockDeviceLostCallback = nullptr;
     }

     void FlushServer() {
         WireTest::FlushServer();

         Mock::VerifyAndClearExpectations(&mockDeviceErrorCallback);
     }
 };

 // Test the return wire for device validation error callbacks
 TEST_F(WireErrorCallbackTests, DeviceValidationErrorCallback) {
     wgpuDeviceSetUncapturedErrorCallback(device, ToMockDeviceErrorCallback, this);

     // Setting the error callback should stay on the client side and do nothing
     FlushClient();

     // Calling the callback on the server side will result in the callback being called on the
     // client side
     api.CallDeviceSetUncapturedErrorCallbackCallback(apiDevice, WGPUErrorType_Validation,
                                                      "Some error message");

     EXPECT_CALL(*mockDeviceErrorCallback,
                 Call(WGPUErrorType_Validation, StrEq("Some error message"), this))
         .Times(1);

     FlushServer();
 }

 // Test the return wire for device OOM error callbacks
 TEST_F(WireErrorCallbackTests, DeviceOutOfMemoryErrorCallback) {
     wgpuDeviceSetUncapturedErrorCallback(device, ToMockDeviceErrorCallback, this);

     // Setting the error callback should stay on the client side and do nothing
     FlushClient();

     // Calling the callback on the server side will result in the callback being called on the
     // client side
     api.CallDeviceSetUncapturedErrorCallbackCallback(apiDevice, WGPUErrorType_OutOfMemory,
                                                      "Some error message");

     EXPECT_CALL(*mockDeviceErrorCallback,
                 Call(WGPUErrorType_OutOfMemory, StrEq("Some error message"), this))
         .Times(1);

     FlushServer();
 }

 // Test the return wire for device internal error callbacks
 TEST_F(WireErrorCallbackTests, DeviceInternalErrorCallback) {
     wgpuDeviceSetUncapturedErrorCallback(device, ToMockDeviceErrorCallback, this);

     // Setting the error callback should stay on the client side and do nothing
     FlushClient();

     // Calling the callback on the server side will result in the callback being called on the
     // client side
     api.CallDeviceSetUncapturedErrorCallbackCallback(apiDevice, WGPUErrorType_Internal,
                                                      "Some error message");

     EXPECT_CALL(*mockDeviceErrorCallback,
                 Call(WGPUErrorType_Internal, StrEq("Some error message"), this))
         .Times(1);

     FlushServer();
 }

 // Test the return wire for device user warning callbacks
 TEST_F(WireErrorCallbackTests, DeviceLoggingCallback) {
     wgpuDeviceSetLoggingCallback(device, ToMockDeviceLoggingCallback, this);

     // Setting the injected warning callback should stay on the client side and do nothing
     FlushClient();

     // Calling the callback on the server side will result in the callback being called on the
     // client side
     api.CallDeviceSetLoggingCallbackCallback(apiDevice, WGPULoggingType_Info, "Some message");

     EXPECT_CALL(*mockDeviceLoggingCallback, Call(WGPULoggingType_Info, StrEq("Some message"), this))
         .Times(1);

     FlushServer();
 }

 // Test the return wire for device lost callback
 TEST_F(WireErrorCallbackTests, DeviceLostCallback) {
     wgpuDeviceSetDeviceLostCallback(device, ToMockDeviceLostCallback, this);

     // Setting the error callback should stay on the client side and do nothing
     FlushClient();

     // Calling the callback on the server side will result in the callback being called on the
     // client side
     api.CallDeviceSetDeviceLostCallbackCallback(apiDevice, WGPUDeviceLostReason_Unknown,
                                                 "Some error message");

     EXPECT_CALL(*mockDeviceLostCallback,
                 Call(WGPUDeviceLostReason_Unknown, StrEq("Some error message"), this))
         .Times(1);

     FlushServer();
 }

 class WirePopErrorScopeCallbackTests : public WireFutureTestWithParamsBase<> {
   protected:
     // Overridden version of wgpuDevicePopErrorScope that defers to the API call based on the test
     // callback mode.
     void DevicePopErrorScope(WGPUDevice d, void* userdata = nullptr) {
         if (IsAsync()) {
             wgpuDevicePopErrorScope(d, mMockOldCb.Callback(), mMockOldCb.MakeUserdata(userdata));
         } else {
             WGPUPopErrorScopeCallbackInfo callbackInfo = {};
             callbackInfo.mode = ToWGPUCallbackMode(GetParam().mCallbackMode);
             callbackInfo.callback = mMockCb.Callback();
             callbackInfo.userdata = mMockCb.MakeUserdata(userdata);
             this->mFutureIDs.push_back(wgpuDevicePopErrorScopeF(d, callbackInfo).id);
         }
     }

     void PushErrorScope(WGPUErrorFilter filter) {
         EXPECT_CALL(api, DevicePushErrorScope(apiDevice, filter)).Times(1);
         wgpuDevicePushErrorScope(device, filter);
         FlushClient();
     }

     void ExpectWireCallbacksWhen(
         std::function<void(testing::MockCallback<WGPUErrorCallback>&)> oldExp,
         std::function<void(testing::MockCallback<WGPUPopErrorScopeCallback>&)> exp) {
         if (IsAsync()) {
             oldExp(mMockOldCb);
             ASSERT_TRUE(testing::Mock::VerifyAndClearExpectations(&mMockOldCb));
         } else {
             exp(mMockCb);
             ASSERT_TRUE(testing::Mock::VerifyAndClearExpectations(&mMockCb));
         }
     }

   private:
     testing::MockCallback<WGPUPopErrorScopeCallback> mMockCb;
     testing::MockCallback<WGPUErrorCallback> mMockOldCb;
 };
 DAWN_INSTANTIATE_WIRE_FUTURE_TEST_P(WirePopErrorScopeCallbackTests);

 // Test the return wire for validation error scopes.
 TEST_P(WirePopErrorScopeCallbackTests, TypeAndFilters) {
     static constexpr std::array<std::pair<WGPUErrorType, WGPUErrorFilter>, 3> kErrorTypeAndFilters =
         {{{WGPUErrorType_Validation, WGPUErrorFilter_Validation},
           {WGPUErrorType_OutOfMemory, WGPUErrorFilter_OutOfMemory},
           {WGPUErrorType_Internal, WGPUErrorFilter_Internal}}};

     for (const auto& [type, filter] : kErrorTypeAndFilters) {
         PushErrorScope(filter);

         DevicePopErrorScope(device, this);
         EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).WillOnce([&] {
             api.CallDevicePopErrorScope2Callback(apiDevice, WGPUPopErrorScopeStatus_Success, type,
                                                  "Some error message");
         });

         FlushClient();
         FlushFutures();
         ExpectWireCallbacksWhen(
             [&](auto& oldMockCb) {
                 EXPECT_CALL(oldMockCb, Call(type, StrEq("Some error message"), this)).Times(1);

                 FlushCallbacks();
             },
             [&](auto& mockCb) {
                 EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_Success, type,
                                          StrEq("Some error message"), this))
                     .Times(1);

                 FlushCallbacks();
             });
     }
 }

 // Wire disconnect before server response calls the callback with Unknown error type.
 // TODO(crbug.com/dawn/2021) When using new callback signature, check for InstanceDropped status.
 TEST_P(WirePopErrorScopeCallbackTests, DisconnectBeforeServerReply) {
     PushErrorScope(WGPUErrorFilter_Validation);

     DevicePopErrorScope(device, this);
     EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).Times(1);

     FlushClient();
     FlushFutures();
     ExpectWireCallbacksWhen(
         [&](auto& oldMockCb) {
             EXPECT_CALL(oldMockCb, Call(WGPUErrorType_Unknown, nullptr, this)).Times(1);

             GetWireClient()->Disconnect();
         },
         [&](auto& mockCb) {
             EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_InstanceDropped, WGPUErrorType_Unknown,
                                      nullptr, this))
                 .Times(1);

             GetWireClient()->Disconnect();
         });
 }

 // Wire disconnect after server response calls the callback with returned error type.
 TEST_P(WirePopErrorScopeCallbackTests, DisconnectAfterServerReply) {
     // On Async and Spontaneous mode, it is not possible to simulate this because on the server
     // reponse, the callback would also be fired.
     DAWN_SKIP_TEST_IF(IsSpontaneous());

     PushErrorScope(WGPUErrorFilter_Validation);

     DevicePopErrorScope(device, this);
     EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).WillOnce(InvokeWithoutArgs([&] {
         api.CallDevicePopErrorScope2Callback(apiDevice, WGPUPopErrorScopeStatus_Success,
                                              WGPUErrorType_Validation, "Some error message");
     }));

     FlushClient();
     FlushFutures();
     ExpectWireCallbacksWhen(
         [&](auto& oldMockCb) {
             EXPECT_CALL(oldMockCb, Call(WGPUErrorType_Validation, nullptr, this)).Times(1);

             GetWireClient()->Disconnect();
         },
         [&](auto& mockCb) {
             EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_InstanceDropped,
                                      WGPUErrorType_Validation, nullptr, this))
                 .Times(1);

             GetWireClient()->Disconnect();
         });
 }

 // Empty stack (We are emulating the errors that would be callback-ed from native).
 TEST_P(WirePopErrorScopeCallbackTests, EmptyStack) {
     DevicePopErrorScope(device, this);
     EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).WillOnce(InvokeWithoutArgs([&] {
         api.CallDevicePopErrorScope2Callback(apiDevice, WGPUPopErrorScopeStatus_Success,
                                              WGPUErrorType_Validation, "No error scopes to pop");
     }));

     FlushClient();
     FlushFutures();
     ExpectWireCallbacksWhen(
         [&](auto& oldMockCb) {
             EXPECT_CALL(oldMockCb,
                         Call(WGPUErrorType_Validation, StrEq("No error scopes to pop"), this))
                 .Times(1);

             FlushCallbacks();
         },
         [&](auto& mockCb) {
             EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_Success, WGPUErrorType_Validation,
                                      StrEq("No error scopes to pop"), this))
                 .Times(1);

             FlushCallbacks();
         });
 }

 }  // anonymous namespace
 }  // namespace dawn::wire
	// Copyright 2019 The Dawn & Tint Authors
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// 1. Redistributions of source code must retain the above copyright notice, this
	// list of conditions and the following disclaimer.
	//
	// 2. Redistributions in binary form must reproduce the above copyright notice,
	// this list of conditions and the following disclaimer in the documentation
	// and/or other materials provided with the distribution.
	//
	// 3. Neither the name of the copyright holder nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
	// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include <memory>
	#include <utility>

	#include "dawn/common/FutureUtils.h"
	#include "dawn/tests/unittests/wire/WireFutureTest.h"
	#include "dawn/tests/unittests/wire/WireTest.h"
	#include "dawn/wire/WireClient.h"

	namespace dawn::wire {
	namespace {

	using testing::_;
	using testing::DoAll;
	using testing::InvokeWithoutArgs;
	using testing::Mock;
	using testing::Return;
	using testing::SaveArg;
	using testing::StrEq;
	using testing::StrictMock;

	// Mock classes to add expectations on the wire calling callbacks
	class MockDeviceErrorCallback {
	public:
	MOCK_METHOD(void, Call, (WGPUErrorType type, const char* message, void* userdata));
	};

	std::unique_ptr<StrictMock<MockDeviceErrorCallback>> mockDeviceErrorCallback;
	void ToMockDeviceErrorCallback(WGPUErrorType type, const char* message, void* userdata) {
	mockDeviceErrorCallback->Call(type, message, userdata);
	}

	class MockDeviceLoggingCallback {
	public:
	MOCK_METHOD(void, Call, (WGPULoggingType type, const char* message, void* userdata));
	};

	std::unique_ptr<StrictMock<MockDeviceLoggingCallback>> mockDeviceLoggingCallback;
	void ToMockDeviceLoggingCallback(WGPULoggingType type, const char* message, void* userdata) {
	mockDeviceLoggingCallback->Call(type, message, userdata);
	}

	class MockDeviceLostCallback {
	public:
	MOCK_METHOD(void, Call, (WGPUDeviceLostReason reason, const char* message, void* userdata));
	};

	std::unique_ptr<StrictMock<MockDeviceLostCallback>> mockDeviceLostCallback;
	void ToMockDeviceLostCallback(WGPUDeviceLostReason reason, const char* message, void* userdata) {
	mockDeviceLostCallback->Call(reason, message, userdata);
	}

	class WireErrorCallbackTests : public WireTest {
	public:
	WireErrorCallbackTests() {}
	~WireErrorCallbackTests() override = default;

	void SetUp() override {
	WireTest::SetUp();

	mockDeviceErrorCallback = std::make_unique<StrictMock<MockDeviceErrorCallback>>();
	mockDeviceLoggingCallback = std::make_unique<StrictMock<MockDeviceLoggingCallback>>();
	mockDeviceLostCallback = std::make_unique<StrictMock<MockDeviceLostCallback>>();
	}

	void TearDown() override {
	WireTest::TearDown();

	mockDeviceErrorCallback = nullptr;
	mockDeviceLoggingCallback = nullptr;
	mockDeviceLostCallback = nullptr;
	}

	void FlushServer() {
	WireTest::FlushServer();

	Mock::VerifyAndClearExpectations(&mockDeviceErrorCallback);
	}
	};

	// Test the return wire for device validation error callbacks
	TEST_F(WireErrorCallbackTests, DeviceValidationErrorCallback) {
	wgpuDeviceSetUncapturedErrorCallback(device, ToMockDeviceErrorCallback, this);

	// Setting the error callback should stay on the client side and do nothing
	FlushClient();

	// Calling the callback on the server side will result in the callback being called on the
	// client side
	api.CallDeviceSetUncapturedErrorCallbackCallback(apiDevice, WGPUErrorType_Validation,
	"Some error message");

	EXPECT_CALL(*mockDeviceErrorCallback,
	Call(WGPUErrorType_Validation, StrEq("Some error message"), this))
	.Times(1);

	FlushServer();
	}

	// Test the return wire for device OOM error callbacks
	TEST_F(WireErrorCallbackTests, DeviceOutOfMemoryErrorCallback) {
	wgpuDeviceSetUncapturedErrorCallback(device, ToMockDeviceErrorCallback, this);

	// Setting the error callback should stay on the client side and do nothing
	FlushClient();

	// Calling the callback on the server side will result in the callback being called on the
	// client side
	api.CallDeviceSetUncapturedErrorCallbackCallback(apiDevice, WGPUErrorType_OutOfMemory,
	"Some error message");

	EXPECT_CALL(*mockDeviceErrorCallback,
	Call(WGPUErrorType_OutOfMemory, StrEq("Some error message"), this))
	.Times(1);

	FlushServer();
	}

	// Test the return wire for device internal error callbacks
	TEST_F(WireErrorCallbackTests, DeviceInternalErrorCallback) {
	wgpuDeviceSetUncapturedErrorCallback(device, ToMockDeviceErrorCallback, this);

	// Setting the error callback should stay on the client side and do nothing
	FlushClient();

	// Calling the callback on the server side will result in the callback being called on the
	// client side
	api.CallDeviceSetUncapturedErrorCallbackCallback(apiDevice, WGPUErrorType_Internal,
	"Some error message");

	EXPECT_CALL(*mockDeviceErrorCallback,
	Call(WGPUErrorType_Internal, StrEq("Some error message"), this))
	.Times(1);

	FlushServer();
	}

	// Test the return wire for device user warning callbacks
	TEST_F(WireErrorCallbackTests, DeviceLoggingCallback) {
	wgpuDeviceSetLoggingCallback(device, ToMockDeviceLoggingCallback, this);

	// Setting the injected warning callback should stay on the client side and do nothing
	FlushClient();

	// Calling the callback on the server side will result in the callback being called on the
	// client side
	api.CallDeviceSetLoggingCallbackCallback(apiDevice, WGPULoggingType_Info, "Some message");

	EXPECT_CALL(*mockDeviceLoggingCallback, Call(WGPULoggingType_Info, StrEq("Some message"), this))
	.Times(1);

	FlushServer();
	}

	// Test the return wire for device lost callback
	TEST_F(WireErrorCallbackTests, DeviceLostCallback) {
	wgpuDeviceSetDeviceLostCallback(device, ToMockDeviceLostCallback, this);

	// Setting the error callback should stay on the client side and do nothing
	FlushClient();

	// Calling the callback on the server side will result in the callback being called on the
	// client side
	api.CallDeviceSetDeviceLostCallbackCallback(apiDevice, WGPUDeviceLostReason_Unknown,
	"Some error message");

	EXPECT_CALL(*mockDeviceLostCallback,
	Call(WGPUDeviceLostReason_Unknown, StrEq("Some error message"), this))
	.Times(1);

	FlushServer();
	}

	class WirePopErrorScopeCallbackTests : public WireFutureTestWithParamsBase<> {
	protected:
	// Overridden version of wgpuDevicePopErrorScope that defers to the API call based on the test
	// callback mode.
	void DevicePopErrorScope(WGPUDevice d, void* userdata = nullptr) {
	if (IsAsync()) {
	wgpuDevicePopErrorScope(d, mMockOldCb.Callback(), mMockOldCb.MakeUserdata(userdata));
	} else {
	WGPUPopErrorScopeCallbackInfo callbackInfo = {};
	callbackInfo.mode = ToWGPUCallbackMode(GetParam().mCallbackMode);
	callbackInfo.callback = mMockCb.Callback();
	callbackInfo.userdata = mMockCb.MakeUserdata(userdata);
	this->mFutureIDs.push_back(wgpuDevicePopErrorScopeF(d, callbackInfo).id);
	}
	}

	void PushErrorScope(WGPUErrorFilter filter) {
	EXPECT_CALL(api, DevicePushErrorScope(apiDevice, filter)).Times(1);
	wgpuDevicePushErrorScope(device, filter);
	FlushClient();
	}

	void ExpectWireCallbacksWhen(
	std::function<void(testing::MockCallback<WGPUErrorCallback>&)> oldExp,
	std::function<void(testing::MockCallback<WGPUPopErrorScopeCallback>&)> exp) {
	if (IsAsync()) {
	oldExp(mMockOldCb);
	ASSERT_TRUE(testing::Mock::VerifyAndClearExpectations(&mMockOldCb));
	} else {
	exp(mMockCb);
	ASSERT_TRUE(testing::Mock::VerifyAndClearExpectations(&mMockCb));
	}
	}

	private:
	testing::MockCallback<WGPUPopErrorScopeCallback> mMockCb;
	testing::MockCallback<WGPUErrorCallback> mMockOldCb;
	};
	DAWN_INSTANTIATE_WIRE_FUTURE_TEST_P(WirePopErrorScopeCallbackTests);

	// Test the return wire for validation error scopes.
	TEST_P(WirePopErrorScopeCallbackTests, TypeAndFilters) {
	static constexpr std::array<std::pair<WGPUErrorType, WGPUErrorFilter>, 3> kErrorTypeAndFilters =
	{{{WGPUErrorType_Validation, WGPUErrorFilter_Validation},
	{WGPUErrorType_OutOfMemory, WGPUErrorFilter_OutOfMemory},
	{WGPUErrorType_Internal, WGPUErrorFilter_Internal}}};

	for (const auto& [type, filter] : kErrorTypeAndFilters) {
	PushErrorScope(filter);

	DevicePopErrorScope(device, this);
	EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).WillOnce([&] {
	api.CallDevicePopErrorScope2Callback(apiDevice, WGPUPopErrorScopeStatus_Success, type,
	"Some error message");
	});

	FlushClient();
	FlushFutures();
	ExpectWireCallbacksWhen(
	[&](auto& oldMockCb) {
	EXPECT_CALL(oldMockCb, Call(type, StrEq("Some error message"), this)).Times(1);

	FlushCallbacks();
	},
	[&](auto& mockCb) {
	EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_Success, type,
	StrEq("Some error message"), this))
	.Times(1);

	FlushCallbacks();
	});
	}
	}

	// Wire disconnect before server response calls the callback with Unknown error type.
	// TODO(crbug.com/dawn/2021) When using new callback signature, check for InstanceDropped status.
	TEST_P(WirePopErrorScopeCallbackTests, DisconnectBeforeServerReply) {
	PushErrorScope(WGPUErrorFilter_Validation);

	DevicePopErrorScope(device, this);
	EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).Times(1);

	FlushClient();
	FlushFutures();
	ExpectWireCallbacksWhen(
	[&](auto& oldMockCb) {
	EXPECT_CALL(oldMockCb, Call(WGPUErrorType_Unknown, nullptr, this)).Times(1);

	GetWireClient()->Disconnect();
	},
	[&](auto& mockCb) {
	EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_InstanceDropped, WGPUErrorType_Unknown,
	nullptr, this))
	.Times(1);

	GetWireClient()->Disconnect();
	});
	}

	// Wire disconnect after server response calls the callback with returned error type.
	TEST_P(WirePopErrorScopeCallbackTests, DisconnectAfterServerReply) {
	// On Async and Spontaneous mode, it is not possible to simulate this because on the server
	// reponse, the callback would also be fired.
	DAWN_SKIP_TEST_IF(IsSpontaneous());

	PushErrorScope(WGPUErrorFilter_Validation);

	DevicePopErrorScope(device, this);
	EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).WillOnce(InvokeWithoutArgs([&] {
	api.CallDevicePopErrorScope2Callback(apiDevice, WGPUPopErrorScopeStatus_Success,
	WGPUErrorType_Validation, "Some error message");
	}));

	FlushClient();
	FlushFutures();
	ExpectWireCallbacksWhen(
	[&](auto& oldMockCb) {
	EXPECT_CALL(oldMockCb, Call(WGPUErrorType_Validation, nullptr, this)).Times(1);

	GetWireClient()->Disconnect();
	},
	[&](auto& mockCb) {
	EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_InstanceDropped,
	WGPUErrorType_Validation, nullptr, this))
	.Times(1);

	GetWireClient()->Disconnect();
	});
	}

	// Empty stack (We are emulating the errors that would be callback-ed from native).
	TEST_P(WirePopErrorScopeCallbackTests, EmptyStack) {
	DevicePopErrorScope(device, this);
	EXPECT_CALL(api, OnDevicePopErrorScope2(apiDevice, _)).WillOnce(InvokeWithoutArgs([&] {
	api.CallDevicePopErrorScope2Callback(apiDevice, WGPUPopErrorScopeStatus_Success,
	WGPUErrorType_Validation, "No error scopes to pop");
	}));

	FlushClient();
	FlushFutures();
	ExpectWireCallbacksWhen(
	[&](auto& oldMockCb) {
	EXPECT_CALL(oldMockCb,
	Call(WGPUErrorType_Validation, StrEq("No error scopes to pop"), this))
	.Times(1);

	FlushCallbacks();
	},
	[&](auto& mockCb) {
	EXPECT_CALL(mockCb, Call(WGPUPopErrorScopeStatus_Success, WGPUErrorType_Validation,
	StrEq("No error scopes to pop"), this))
	.Times(1);

	FlushCallbacks();
	});
	}

	} // anonymous namespace
	} // namespace dawn::wire