Best practice for unit testing gRPC

Question

is this a best practice while performing integration tests on the gRPC services? ie opening and closing channels after each unit test using annotations @BeforeEach and @AfterEach

private ManagedChannel channel;

private DepartmentServiceGrpc.DepartmentServiceBlockingStub deptService;

@BeforeEach
public void initEach(){
    channel = ManagedChannelBuilder.forAddress("localhost", 8080)
            .usePlaintext()
            .build();

    deptService = DeptServiceGrpc.newBlockingStub(channel);
}

@AfterEach
public void cleanUpEach(){
    channel.shutdown();
}

Answer 1

gRPC provides junit4 rule called GrpcCleanupRule . Note that it is junit4 rule.

Answer 2

If you're using JUnit 4, you can use the GrpcCleanupRule . If you're using JUnit 5, you can use the OSS grpc-test I created.