spring - 在 Kotlin 上使用 WebTestClient 和 SpringBootTest 时出现 "lateinit property has not been initialized"

Question

我不知道如何获得 WebTestClient使用 Kotlin 和 Spring Boot 测试时初始化。

@ExtendWith(SpringExtension::class, MockKExtension::class)
@AutoConfigureWebTestClient
@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
class GraphQlClientIntegrationTest {
    private val testToken = "aUna%14OkmUZunb528342"

    @Autowired
    lateinit var client: WebTestClient

    @InjectMockKs
    lateinit var gateGraphQlClient: GateGraphQlClient

    @Test
    fun shouldAddAuthorization() {
        val ID = Id(UUID.randomUUID().toString())
        val returnResult = client.post()
                .uri("/graphql")
                .header(HttpHeaders.AUTHORIZATION, testToken)
                .exchange()
                .expectStatus().isOk
                .returnResult(ObjectNode::class.java)
    }
}

这是错误信息

lateinit property client has not been initialized
kotlin.UninitializedPropertyAccessException: lateinit property client has not been initialized

Answer 1

尝试构造函数注入(inject)。因为 lateinit 会延迟初始化对象。所以它会给null调用方法时的值，因此它会抛出 UninitializedPropertyAccessException

class GraphQlClientIntegrationTest(val client: WebTestClient,
                                   val gateGraphQlClient: GateGraphQlClient) {
    private val testToken = "aUna%14OkmUZunb528342"
    // Your Code
}