在Kotlin中使用Mockito抛出异常

Jak*_*ter 7 java testing mockito kotlin

我正在使用Kotlin并尝试在特定方法调用上引发Exception,但始终会收到以下错误

Checked exception is invalid for this method!
Invalid: exceptions.ServiceException
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这是测试

val client : IClient = Mockito.spy(Client(Cnf("https://:region.example.com", key)))


@Test(expected = ServiceException::class)
fun test400ResponseFrom() {
    val url = "https://example.com/example/user/v3/user/by-name/JACKAPPLE"

    Mockito.doThrow(ServiceException("Bad Request")).`when`(client).makeRequest(url ,riotkey)
    client.getUserDataByNameAndRegion("jackapple", "BR")
}
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基本上,该getUserDataByNameAndRegion方法将调用该makeRequest方法,并且通过此测试,我想验证该方法是否正确处理了存根方法的结果。

原始方法如下所示

@Throws(NotFoundException::class, ServiceException::class)
fun makeRequest(url: String, key : String) : String {
    val con = prepareConnection(url, key)
    val statusCode = con.responseCode
    when {
        (statusCode == 400) -> throw ServiceException("Bad Request")
        (statusCode == 401) -> throw ServiceException("Unauthorized")
        (statusCode == 403) -> throw ServiceException("Forbidden")
        (statusCode == 404) -> throw NotFoundException("Data not Found")
        (statusCode == 415) -> throw ServiceException("Unsupported Media Type")
        (statusCode == 429) -> throw ServiceException("Rate limit exceeded")
        (statusCode == 500) -> throw ServiceException("Internal Server Error")
        (statusCode == 502) -> throw ServiceException("Bad Gateway")
        (statusCode == 503) -> throw ServiceException("Service unavailable")
        (statusCode == 504) -> throw ServiceException("Gateway timeout")
        (statusCode == 200) -> {
            return getStringResponseFromConnection(con)
        }
        else -> {
            throw ServiceException("Respondend with Statuscode ${statusCode}")
        }
    }
}
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Wal*_*rer 8

您可以尝试以下想法(取自github 上的类似讨论):

.doAnswer { throw ServiceException("Bad Request") }
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  • 这对我有用,“answer”功能似乎有效。`given(yourClass.someMethod()).willAnswer { throw ServiceException() }` (2认同)

小智 5

就我而言,我使用的是引发已检查异常的底层 Java 客户端。我的 Kotlin 代码需要处理这些异常的一种变体,因此为了测试这个代码路径,我可以使用:

whenever(someObject.doesSomething(any()).then {
    throw MyCheckedException("Error")
}
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Pau*_*cks 2

Kotlin 不支持创建抛出已检查异常的方法。您可以在 Java 中定义makeRequest,也可以更改ServiceException为扩展RuntimeException