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/*
*
* Copyright 2018 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <memory>
#include <vector>
#include <gtest/gtest.h>
#include <grpcpp/channel.h>
#include <grpcpp/client_context.h>
#include <grpcpp/create_channel.h>
#include <grpcpp/generic/generic_stub.h>
#include <grpcpp/impl/codegen/delegating_channel.h>
#include <grpcpp/impl/codegen/proto_utils.h>
#include <grpcpp/server.h>
#include <grpcpp/server_builder.h>
#include <grpcpp/server_context.h>
#include <grpcpp/support/client_interceptor.h>
#include "src/proto/grpc/testing/echo.grpc.pb.h"
#include "test/core/util/port.h"
#include "test/core/util/test_config.h"
#include "test/cpp/end2end/test_service_impl.h"
#include "test/cpp/util/byte_buffer_proto_helper.h"
#include "test/cpp/util/string_ref_helper.h"
namespace grpc {
namespace testing {
namespace {
class TestChannel : public experimental::DelegatingChannel {
public:
explicit TestChannel(
const std::shared_ptr<ChannelInterface>& delegate_channel)
: experimental::DelegatingChannel(delegate_channel) {}
// Always returns GRPC_CHANNEL_READY
grpc_connectivity_state GetState(bool /*try_to_connect*/) override {
return GRPC_CHANNEL_READY;
}
};
class DelegatingChannelTest : public ::testing::Test {
protected:
DelegatingChannelTest() {
int port = grpc_pick_unused_port_or_die();
ServerBuilder builder;
server_address_ = "localhost:" + std::to_string(port);
builder.AddListeningPort(server_address_, InsecureServerCredentials());
builder.RegisterService(&service_);
server_ = builder.BuildAndStart();
}
~DelegatingChannelTest() override { server_->Shutdown(); }
std::string server_address_;
TestServiceImpl service_;
std::unique_ptr<Server> server_;
};
TEST_F(DelegatingChannelTest, SimpleTest) {
auto channel = CreateChannel(server_address_, InsecureChannelCredentials());
std::shared_ptr<TestChannel> test_channel =
std::make_shared<TestChannel>(channel);
// gRPC channel should be in idle state at this point but our test channel
// will return ready.
EXPECT_EQ(channel->GetState(false), GRPC_CHANNEL_IDLE);
EXPECT_EQ(test_channel->GetState(false), GRPC_CHANNEL_READY);
auto stub = grpc::testing::EchoTestService::NewStub(test_channel);
ClientContext ctx;
EchoRequest req;
req.set_message("Hello");
EchoResponse resp;
Status s = stub->Echo(&ctx, req, &resp);
EXPECT_EQ(s.ok(), true);
EXPECT_EQ(resp.message(), "Hello");
}
} // namespace
} // namespace testing
} // namespace grpc
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(&argc, argv);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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