Micronaut unit testing : need clarification on @MicronautTest

I am trying my hands on micronaut, I am facing some difficulty in understanding how to do unit tests.

I have a simple application with only one controller(which returns hello).
Now I want to test this endpoint. Coming from springboot I was expecting that micronaut has some runner class like SpringRunner, I could not find any. Is there a runner class in micronaut for running tests?

From the documentation here I see that I can test my rest endpoints using HTTPClient. I tried both the

1. Low level HttpClient
2. CompileTime HttpClient

Here is a snippet of the test classes I have

@MicronautTest
class HelloControllerSpec {
    @Inject
    EmbeddedServer server; 

    @Inject
    @Client("/")
    HttpClient client; 

    @Test
    void testHelloWorldResponse() {
          //client and server are null
           .........
    }
}  

And

@MicronautTest 
public class HelloClientSpec  {

    @Inject
    HelloClient client; 

    @Test
    public void testHelloWorldResponse(){
        //client is null
   }
}

From what I observed, the annotation @MicronautTest doesn't seem to do anything. Its the same case with @Inject and @Client, all the fields are null when I run the test. So I am wondering what exactly does @MicronautTest do?

The only way I could get it work is to start the server explicitly(@Inject on EmbeddedServer doesn't do anything) like this

server = ApplicationContext.run(EmbeddedServer.class);
helloClient = server.getApplicationContext().getBean(HelloClient.class);

Even with this, it starts a server instance. Which in not what I wanted. Because I do not want to start server for unit tests. Also I do not want to get the beans this way from application Contexts. Whay doesn't @Inject, @Client, @EmbeddedServer work in my case, am I missing something here?

In case of springboot, I could test only the weblayer separately(using mockmvc and springboottest), not starting the whole application context. is there an equivalent in micronaut?

I am using micronaut 1.0.2