blob: ba24f60b00f1cf8c44a43b4128e6887dee3aa558 [file] [log] [blame]
// 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/client_wrapper/include/flutter/basic_message_channel.h"
#include <memory>
#include <string>
#include "flutter/shell/platform/common/client_wrapper/include/flutter/binary_messenger.h"
#include "flutter/shell/platform/common/client_wrapper/include/flutter/standard_message_codec.h"
#include "flutter/shell/platform/common/client_wrapper/include/flutter/standard_method_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 {
send_called_ = true;
int length = static_cast<int>(message_size);
last_message_ =
std::vector<uint8_t>(message, message + length * sizeof(uint8_t));
}
void SetMessageHandler(const std::string& channel,
BinaryMessageHandler handler) override {
last_message_handler_channel_ = channel;
last_message_handler_ = handler;
}
bool send_called() { return send_called_; }
std::string last_message_handler_channel() {
return last_message_handler_channel_;
}
BinaryMessageHandler last_message_handler() { return last_message_handler_; }
std::vector<uint8_t> last_message() { return last_message_; }
private:
mutable bool send_called_ = false;
std::string last_message_handler_channel_;
BinaryMessageHandler last_message_handler_;
mutable std::vector<uint8_t> last_message_;
};
} // 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 received a correctly decoded message and a
// reply.
EXPECT_EQ(std::get<std::string>(message), 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);
}
// Tests that calling Resize generates the binary message expected by the Dart
// implementation.
TEST(BasicMessageChannelTest, Resize) {
TestBinaryMessenger messenger;
const std::string channel_name("flutter/test");
BasicMessageChannel channel(&messenger, channel_name,
&flutter::StandardMessageCodec::GetInstance());
channel.Resize(3);
// Because the Dart implementation for the control channel implements its own
// custom deserialization logic, this test compares the generated bytes array
// to the expected one (for instance, the deserialization logic expects the
// size parameter of the resize method call to be an uint32).
//
// The expected content was created from the following Dart code:
// MethodCall call = MethodCall('resize', ['flutter/test',3]);
// StandardMethodCodec().encodeMethodCall(call).buffer.asUint8List();
const int expected_message_size = 29;
EXPECT_EQ(messenger.send_called(), true);
EXPECT_EQ(static_cast<int>(messenger.last_message().size()),
expected_message_size);
int expected[expected_message_size] = {
7, 6, 114, 101, 115, 105, 122, 101, 12, 2, 7, 12, 102, 108, 117,
116, 116, 101, 114, 47, 116, 101, 115, 116, 3, 3, 0, 0, 0};
for (int i = 0; i < expected_message_size; i++) {
EXPECT_EQ(messenger.last_message()[i], expected[i]);
}
}
// Tests that calling SetWarnsOnOverflow generates the binary message expected
// by the Dart implementation.
TEST(BasicMessageChannelTest, SetWarnsOnOverflow) {
TestBinaryMessenger messenger;
const std::string channel_name("flutter/test");
BasicMessageChannel channel(&messenger, channel_name,
&flutter::StandardMessageCodec::GetInstance());
channel.SetWarnsOnOverflow(false);
// Because the Dart implementation for the control channel implements its own
// custom deserialization logic, this test compares the generated bytes array
// to the expected one.
//
// The expected content was created from the following Dart code:
// MethodCall call = MethodCall('overflow',['flutter/test', true]);
// StandardMethodCodec().encodeMethodCall(call).buffer.asUint8List();
const int expected_message_size = 27;
EXPECT_EQ(messenger.send_called(), true);
EXPECT_EQ(static_cast<int>(messenger.last_message().size()),
expected_message_size);
int expected[expected_message_size] = {
7, 8, 111, 118, 101, 114, 102, 108, 111, 119, 12, 2, 7, 12,
102, 108, 117, 116, 116, 101, 114, 47, 116, 101, 115, 116, 1};
for (int i = 0; i < expected_message_size; i++) {
EXPECT_EQ(messenger.last_message()[i], expected[i]);
}
}
} // namespace flutter