KotlinSpringBootNoCatTest.kt

@RunWith(SpringRunner::class)
@SpringBootTest(webEnvironment=WebEnvironment.RANDOM_PORT)
class NoCatsTest {

	@Autowired lateinit var restTemplate: TestRestTemplate

	@Test
	fun indexShouldReturnEmptyListWhenNoCatsExist() {
		val response = restTemplate.getForEntity("/", CatsList::class.java)

		assertThat(response.statusCode).isEqualTo(HttpStatus.OK)
		assertThat(response.body).isNotNull.isEmpty()
	}
}