The following code snippet shows the generated SpringBootApplicationTest class, FirstWebServiceWithKotlinApplicationTests:

    @RunWith(SpringRunner::class)
    @SpringBootTest
    class FirstWebServiceWithKotlinApplicationTests {
      @Test
      fun contextLoads() {
      }
    }

The following are a few important things to note:

• Package, import, and annotations are the same as that of a Java class.
• :: is used to obtain a Kotlin class runtime reference. Compared to @RunWith(SpringRunner.class) in Java, the Kotlin code uses @RunWith(SpringRunner::class).
• The declaration of the test class uses the Kotlin function syntax.