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