如何在Camel中对In-Out组件进行单元测试？

import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.impl.DefaultCamelContext;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class InOutComponentTest {

    private CamelContext camelContext;

    @Before
    public void setUp() throws Exception {
        camelContext = new DefaultCamelContext();
        camelContext.addRoutes(new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:start")
                        .to("mock:result");
            }
        });
        camelContext.start();
    }

    @After
    public void tearDown() throws Exception {
        camelContext.stop();
    }

    @Test
    public void testInOutComponent() throws Exception {
        MockEndpoint mockEndpoint = camelContext.getEndpoint("mock:result", MockEndpoint.class);
        mockEndpoint.expectedBodiesReceived("Hello World");

        camelContext.createProducerTemplate().sendBody("direct:start", "Hello World");

        mockEndpoint.assertIsSatisfied();
    }
}