获取junit.framework.AssertionFailedError：使用Unit和Mockito时，[package]中没有找到任何测试 [英] Getting junit.framework.AssertionFailedError: No tests found in [package] when using Unit and Mockito

问题描述

我在我的android项目中添加了以下依赖项：

I added the following dependencies to my android project:

 // Unit testing dependencies
androidTestCompile 'junit:junit:4.12'
// Set this dependency if you want to use Mockito
androidTestCompile 'org.mockito:mockito-core:1.10.19'

使用junit4 api创建一个测试（例如，Adder是一个简单的类，它总结了int）：

And create a test using junit4 api (an example, Adder is a simple class that sums ints):

@RunWith(MockitoJUnitRunner.class) 
public class AdderTest {

    @Test
    public void testValidAdd() {
        Adder adder = new Adder();
        assertEquals(adder.add(1,1), 2);
    }
}

当我尝试运行测试时，我得到：

When I try to run the test, I get:

运行测试
测试运行已开始
junit.framework.AssertionFailedError：在com.test.myapp中找不到测试.AdderTest
在android.test.AndroidTestRunner.runTest（AndroidTestRunner.java:191）
在android.test.AndroidTestRunner.runTest（AndroidTestRunner.java:176）
在android.test.InstrumentationTestRunner .onStart（InstrumentationTestRunner.java:554）
在android.app.Instrumentation $ InstrumentationThread.run（Instrumentation.java:1701)
完成

Running tests Test running started junit.framework.AssertionFailedError: No tests found in com.test.myapp.AdderTest at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:191) at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:176) at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:554) at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1701) Finish

我读了这里和此处，但没有任何帮助。

I read here and here, but nothing helps.

有没有人看到我做错了什么/有什么输入？

Does anyone see what I'm doing wrong / have any input?

推荐答案

这些不是单元测试，它们是仪器测试。我有同样的问题并通过将这些行添加到模块的build.gradle来解决它：

These aren't unit tests, they are instrumentation test. I had the same problem and solved it by adding these lines to module's build.gradle:

android {
    ...
    sourceSets {
        ...
        defaultConfig {
            testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
        }
    }
}

你必须在依赖项中添加跑步者，我建议你喝咖啡：

You have to add the runner in dependencies, i suggest you espresso:

androidTestCompile 'com.android.support.test.espresso:espresso-core:2.0'

编辑：

我忘记了注释。只需删除@RunWith并使用line创建一个@Before方法：

I have forgotten about the annotation. Just remove @RunWith and make a @Before method with line:

MockitoAnnotations.initMocks(this);

或：

System.setProperty("dexmaker.dexcache", InstrumentationRegistry.getTargetContext().getCacheDir().getPath());

我不推荐这种方式。要使用第二个，你必须使用dex-maker为mockito添加依赖项：

I have to mention this way is not recommended. To use the second one, you have to add dependencies with dex-maker for mockito:

androidTestCompile ('com.google.dexmaker:dexmaker-mockito:1.2') {
        exclude module: 'mockito-core'
    }

由于你添加了mockito，我们必须从新的依赖项中排除mockito核心。它已包含正常的dex-maker模块。

Since you have added mockito, we have to exclude mockito core from the new dependency. It already contains the normal dex-maker module.

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