模拟jodd http请求和响应

Question

我用Jodd来提出请求。是否有任何方法来创建模拟，以便在单元测试期间不会发生请求？我已经尝试过创建一个send()方法的模拟，但没有成功。

@Service
class ValidateUrlService {
    val TIMEOUT = 5000

    fun validateUrl(url: String): RequestVO {
        var response = HttpResponse()
        var timeBefore = Date()

        return try{
            response = HttpRequest
                .post(url)
                .timeout(TIMEOUT)
                .connectionTimeout(TIMEOUT)
                .send()

            val httpStatus = response.statusCode()

            buildResponseDTO(httpStatusToBoolean(httpStatus), httpStatus)
        } catch (ex: Exception) {
            genericExceptionHandler(ex, response.statusCode(), timeBefore)
        }
    }

我的测验

internal class ValidateUrlServiceTest{
    private val service = ValidateUrlService()

    @Mock
    var request: HttpRequest = HttpRequest.post(ArgumentMatchers.anyString())

    @Test
    fun test(){
        Mockito.`when`(request.send()).thenReturn(HttpResponse().statusCode(555))
        service.validateUrl("https://www.example.com")
    }

}

错误：

You cannot use argument matchers outside of verification or stubbing.
Examples of correct usage of argument matchers:
when(mock.get(anyInt())).thenReturn(null);
doThrow(new RuntimeException()).when(mock).someVoidMethod(any());
verify(mock).someMethod(contains("foo"))

Answer 1

模拟只适用于注入的对象。对于在方法作用域中创建的对象，模拟不起作用

您可以将HTTP调用抽象出一个不同的类

class HttpService {
    fun post(url: String, timeOut: Long): HttpResponse {
            return HttpRequest
            .post(url)
            .timeout(timeOut)
            .connectionTimeout(timeOut)
            .send()

    }
}

class ValidateUrlService {
    val httpService: HttpService
    val TIMEOUT = 5000

    fun validateUrl(url: String): RequestVO {
        var response = HttpResponse()
        var timeBefore = Date()

        return try{
            response = httpService.post(url, TIMEOUT)

            val httpStatus = response.statusCode()

            buildResponseDTO(httpStatusToBoolean(httpStatus), httpStatus)
        } catch (ex: Exception) {
            genericExceptionHandler(ex, response.statusCode(), timeBefore)
        }
    }

现在您应该能够模拟HttpService post方法了。

Answer 2

你的第一个错误在这里

@Mock
var request: HttpRequest = HttpRequest.post(ArgumentMatchers.anyString())

因为您正在分配请求非模拟对象。

如果您想使用注释，您必须像这样编写测试：(我假设您使用的是JUnit5)

 @ExtendWith(MockitoExtension::class)
 internal class ValidateUrlServiceTest{
    private val service = ValidateUrlService()

    @Mock
    lateinit var request: HttpRequest

    @Test
    fun test(){
        Mockito.`when`(request.send()).thenReturn(HttpResponse().statusCode(555))
        service.validateUrl("https://www.example.com")
    }

}

第二个问题是，您正在尝试模拟正在测试的方法中创建的对象。

您必须通过依赖项注入提供HttpRequest实例(可能使用注入的提供者作为ValidateUrlService的构造函数参数)

小贴士:如果你想避免“丑陋”的语法Mockito.`when`，你可以使用莫基托科特林图书馆或莫克库，它们都用一种更流畅的kotlin方式来编写测试。