Mockito.anyString()在Kotlin中与NPE一起崩溃 [英] Mockito.anyString() crashes with NPE in Kotlin

问题描述

我正在使用espresso，我想为内容解析器创建模拟响应.

I am using espresso and I want to create a mock response for the content resolver.

当我使用时:

`when`(context.activity.contentResolver.query(
        ArgumentMatchers.isA(Uri::class.java), 
        ArgumentMatchers.isA(Array<String>::class.java), 
        ArgumentMatchers.anyString(), null, null))
.thenReturn(matrixCursor)

我得到了错误:

java.lang.NullPointerException: uri 
at com.android.internal.util.Preconditions.checkNotNull(Preconditions.java:128)

在这种情况下是否可以为内容解析器创建模拟响应?

Is it possible to create the mock response for the content resolver in such cases?

推荐答案

这看起来像是可空性问题.Mockito在Kotlin中对于可为null的类型不能很好地工作.

That looks like a nullability issue. Mockito does not work that well with nullable types in Kotlin.

有一个库可以处理此问题: https://github.com/nhaarman/mockito-科特林

There is a library that handles this problem: https://github.com/nhaarman/mockito-kotlin

我建议您检查

I'd suggest you to check anyOrNull() here and try something like

ArgumentMatchers.anyOrNull<String>(), isNull(), isNull()

阅读这篇文章可以完全理解问题以及如何处理任何不同的情况.

Read this article to gain full understanding of the problem and how to handle it any different scenarios.

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