使用 MockK 模拟 resttemplate postforobject 时发生类转换异常

如何解决使用 MockK 模拟 resttemplate postforobject 时发生类转换异常

当我使用特定的 java 风格模拟 restTemplate.postForObject 方法时出现错误。

使用 Java 版本 11.0.11.j9-adpt：

o.mockk.MockKException: Class cast exception happened. Probably type information was erased. In this case use `hint` before call to specify exact return type of a method. Caused by: java.lang.classCastException: java.lang.Object incompatible with com.fif.payments.api.sfc.connector.adapter.rest.model.ConvertToPointsResponse

使用 java 版本 11.0.11-zulu：运行成功

extra["kotestVersion"] = "4.3.2"
extra["mockkVersion"] = "1.11.0"

测试

class PointsRestAdapterTest : BehaviorSpec({

    val restTemplate: RestTemplate = mockk()
    val pointsRepositoryConfig: PointsRepositoryConfig = PointsRepositoryConfig().apply {
        baseUrl = "http://baseurl"
        convertPointsPath = "/convert-to-points"
    }

    val pointsRepository: PointsRepository = PointsRestAdapter(restTemplate,pointsRepositoryConfig)

    given("A `purchaseAmount`,an `amountToConvert` and `transactionDate`") {
        val purchaseAmount = 100
        val amountToConvert = 50
        val transactionDate = LocalDateTime.Now().toIsoString()

        `when`("call points service and response is present") {
            every {
                restTemplate.postForObject(
                        any<String>(),any<httpentity<ConvertToPointsRequest>>(),eq(ConvertToPointsResponse::class.java)
                )
            } returns ConvertToPointsResponse(100)

            then("no exceptions should be thrown") {
                val result = shouldNotthrowAny {
                    pointsRepository.convert(purchaseAmount,amountToConvert,transactionDate)
                }

                result shouldBe 100
            }
        }
    }

})