Example integration test implementation for PingVerticle (See https://github.com/vert-x/vertx-maven)

ModuleIntegrationTest.java

import org.junit.Test;
import org.vertx.java.core.AsyncResult;
import org.vertx.java.core.AsyncResultHandler;
import org.vertx.java.core.Handler;
import org.vertx.java.core.eventbus.Message;
import org.vertx.java.core.http.HttpClientResponse;
import org.vertx.java.core.http.HttpServerRequest;
import org.vertx.testtools.TestVerticle;
import org.vertx.testtools.VertxAssert;

public class ModuleIntegrationTest extends TestVerticle {

  @Test
  public void testPing() {
    container.logger().info("in testPing()");
    vertx.eventBus().send("ping-address", "ping!", new Handler<Message<String>>() {
      @Override
      public void handle(Message<String> reply) {
        assertEquals("pong!", reply.body());

        /*
        If we get here, the test is complete
        You must always call `testComplete()` at the end. Remember that testing is *asynchronous* so
        we cannot assume the test is complete by the time the test method has finished executing like
        in standard synchronous tests
        */
        testComplete();
      }
    });
  }

  @Override
  public void start() {
    // Make sure we call initialize() - this sets up the assert stuff so assert functionality works correctly
    initialize();
    // Deploy the module - the System property `vertx.modulename` will contain the name of the module so you
    // don't have to hardecode it in your tests
    container.deployModule(System.getProperty("vertx.modulename"), new AsyncResultHandler<String>() {
      @Override
      public void handle(AsyncResult<String> asyncResult) {
      // Deployment is asynchronous and this this handler will be called when it's complete (or failed)
      assertTrue(asyncResult.succeeded());
      assertNotNull("deploymentID should not be null", asyncResult.result());
      // If deployed correctly then start the tests!
      startTests();
      }
    });
  }
}