如何模拟Application类以对ViewModel进行单元测试 [英] How to mock Application class to unit test ViewModel

问题描述

我有一个View Model扩展了AndroidViewModel

class MoveViewModel(application: Application): AndroidViewModel(application),CoroutineScope{
    ....
}

我想对其进行单元测试，但是我无法弄清楚如何模拟Application类

And I want to unit test it but I cannot figure out how to Mock the Application class

@Test
    fun testSearchDataValidation() {
        val application = Mockito.mock(Application::class.java)
        val viewModel = MoveViewModel(application)

        .....
    }

但是当我去运行测试时，我得到一个错误，提示Mockito无法模拟Application

But when I go to run the test I get an error that Mockito cannot mock Application

org.mockito.exceptions.base.MockitoException:Mockito无法模拟此 class:android.app.Application类.

org.mockito.exceptions.base.MockitoException: Mockito cannot mock this class: class android.app.Application.

Mockito只能嘲笑非私人&非最终课程.

Mockito can only mock non-private & non-final classes.

如何模拟Application类以将其传递给我的视图模型?

How do I mock the Application class to pass it to my view model?

这是@farhanjk建议的文件夹层次结构

Here is my folder hierarchy as suggested by @farhanjk

推荐答案

Mockito.mock(Application::class.java)

在您的test文件夹中，创建如下所示的层次结构:

In your test folder, create a hierarchy like following:

在org.mockito.plugins.MockMaker文件中，只需放置一个单行文本mock-maker-inline.

In the org.mockito.plugins.MockMaker file, just put a one-liner text mock-maker-inline.

嘲笑无法嘲笑的人:选择参加最终嘲讽类/方法

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