| // Copyright 2013 The Flutter 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 "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/basic_message_channel.h" |
| |
| #include <memory> |
| #include <string> |
| |
| #include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/binary_messenger.h" |
| #include "flutter/shell/platform/common/cpp/client_wrapper/include/flutter/standard_message_codec.h" |
| #include "gtest/gtest.h" |
| |
| namespace flutter { |
| |
| namespace { |
| |
| class TestBinaryMessenger : public BinaryMessenger { |
| public: |
| void Send(const std::string& channel, |
| const uint8_t* message, |
| const size_t message_size, |
| BinaryReply reply) const override {} |
| |
| void SetMessageHandler(const std::string& channel, |
| BinaryMessageHandler handler) override { |
| last_message_handler_channel_ = channel; |
| last_message_handler_ = handler; |
| } |
| |
| std::string last_message_handler_channel() { |
| return last_message_handler_channel_; |
| } |
| |
| BinaryMessageHandler last_message_handler() { return last_message_handler_; } |
| |
| private: |
| std::string last_message_handler_channel_; |
| BinaryMessageHandler last_message_handler_; |
| }; |
| |
| } // namespace |
| |
| // Tests that SetMessageHandler sets a handler that correctly interacts with |
| // the binary messenger. |
| TEST(BasicMessageChannelTest, Registration) { |
| TestBinaryMessenger messenger; |
| const std::string channel_name("some_channel"); |
| const StandardMessageCodec& codec = StandardMessageCodec::GetInstance(); |
| BasicMessageChannel channel(&messenger, channel_name, &codec); |
| |
| bool callback_called = false; |
| const std::string message_value("hello"); |
| channel.SetMessageHandler( |
| [&callback_called, message_value](const auto& message, auto reply) { |
| callback_called = true; |
| // Ensure that the wrapper recieved a correctly decoded message and a |
| // reply. |
| EXPECT_EQ(message.StringValue(), message_value); |
| EXPECT_NE(reply, nullptr); |
| }); |
| EXPECT_EQ(messenger.last_message_handler_channel(), channel_name); |
| EXPECT_NE(messenger.last_message_handler(), nullptr); |
| // Send a test message to trigger the handler test assertions. |
| auto message = codec.EncodeMessage(EncodableValue(message_value)); |
| |
| messenger.last_message_handler()( |
| message->data(), message->size(), |
| [](const uint8_t* reply, const size_t reply_size) {}); |
| EXPECT_EQ(callback_called, true); |
| } |
| |
| // Tests that SetMessageHandler with a null handler unregisters the handler. |
| TEST(BasicMessageChannelTest, Unregistration) { |
| TestBinaryMessenger messenger; |
| const std::string channel_name("some_channel"); |
| BasicMessageChannel channel(&messenger, channel_name, |
| &flutter::StandardMessageCodec::GetInstance()); |
| |
| channel.SetMessageHandler([](const auto& message, auto reply) {}); |
| EXPECT_EQ(messenger.last_message_handler_channel(), channel_name); |
| EXPECT_NE(messenger.last_message_handler(), nullptr); |
| |
| channel.SetMessageHandler(nullptr); |
| EXPECT_EQ(messenger.last_message_handler_channel(), channel_name); |
| EXPECT_EQ(messenger.last_message_handler(), nullptr); |
| } |
| |
| } // namespace flutter |