Let's shift our focus to writing an integration test and then add a method to BasicControllerIT, as shown in the following code snippet:

    @Test
    fun `GET welcome-with-object returns "Hello World"`() {
      // When
      val body = restTemplate.getForObject("/welcome-with-object",
      WelcomeBean::class.java)
      // Then
     assertThat(body.message, containsString("Hello World"));
   }

This method is similar to the earlier integration test, except that we are asserting for a substring in the assertThat method.