gRPC testing

Write your first gRPC testing

First get the proto file from the server and put it in contract\proto folder then the compilation will auto generate the required code.

syntax = "proto3";

package greet;
option go_package = "greetpb";
option java_multiple_files = true;
option java_outer_classname = "GreetProto";
option java_package = "com.greet";

service GreetService{
  // Unary
  rpc Greet(GreetRequest) returns (GreetResponse) {};
}

message Greeting {
  string first_name = 1;
  string last_name = 2;
}

message GreetRequest {
  Greeting greeting = 1;
}

message GreetResponse {
  string result = 1;
}

Create the client code for the rpc connection, then use the client to write the test

   CoffeeGrpc.CoffeeBlockingStub coffeeServiceStub;

    public CoffeeClient() throws IOException {
        ManagedChannel channel = channel("coffee-service-i6avjiaelq-ts.a.run.app", ChannelType.TLS, AuthType.TLS);
        coffeeServiceStub = CoffeeGrpc.newBlockingStub(channel);
    }

public AddCoffeeResponse addCoffee() throws Exception {
        try {
            AddCoffeeRequest addCoffeeRequest = AddCoffeeRequest.newBuilder()
            .setId(UUID.randomUUID().toString())
            .setName("java")
            .setFlavour("Java Grpc")
            .setAroma("Hybrid")
            .setCoffeeSize(CoffeeSize.SMALL)
            .setDescription("New java coffee client")
            .setLastUpdated(Timestamp.newBuilder().build())
            .build();
            return coffeeServiceStub.addCoffee(addCoffeeRequest);
        } catch (Exception e) {
            return null;
        }
}

private final CoffeeClient coffeeClient;

public TC009_GrpcApi() throws IOException {
    coffeeClient = new CoffeeClient();
}

@Test
public void updateCoffee() throws Exception {
        UpdateCoffeeResponse bookResponse = coffeeClient.updateCoffee();
        Assert.assertEquals(bookResponse.getMessage(), "Coffee Details Updated");
}