Android Espresso：“未发现测试”，“程序崩溃”

当使用Espresso测试我的Android应用程序时，我注意到运行配置为All in Module的AndroidTest发现没有测试，而运行All in Package成功。Android Espresso：“未发现测试”，“程序崩溃”

我创建了以下重现的情况下：

使用向导创建新的清洁应用与minSdk 8和空活动
与咖啡等依赖的gradle配置（见下文）
创建AndroidTest Run Configuration选项All in Module和All in Package
添加测试类（参见下文）
以All in Package：测试通过
运行与All in Module：没有测试发现

与All in Module运行工作得很好，直到几天前。我记得所做的更改是将Android Studio升级到1.4，并将Android Support Library升级到23.1.0和Android Support Repository到24.0.0。

Btw。也gradlew connectedCheck和gradlew createDebugAndroidTestCoverageReport现在失败。

有没有人有解决这个问题的建议？

的build.gradle的应用：

apply plugin: 'com.android.application' 

android { 
    compileSdkVersion 23 
    buildToolsVersion "23.0.1" 

    defaultConfig { 
     applicationId "com.example.xyz.apptest" 
     minSdkVersion 8 
     targetSdkVersion 23 
     versionCode 1 
     versionName "1.0" 
     testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 
    } 
    buildTypes { 
     release { 
      minifyEnabled false 
      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 
     } 
     debug { 
      testCoverageEnabled true 
     } 
    } 
} 

dependencies { 
    compile fileTree(dir: 'libs', include: ['*.jar']) 
    testCompile 'junit:junit:4.12' 
    compile 'com.android.support:appcompat-v7:23.1.0' 

    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.1') { 
     // Necessary if your app targets Marshmallow (since Espresso 
     // hasn't moved to Marshmallow yet) 
     exclude group: 'com.android.support', module: 'support-annotations' 
    } 
    androidTestCompile('com.android.support.test.espresso:espresso-contrib:2.2.1') { 
     // Necessary if your app targets Marshmallow (since Espresso 
     // hasn't moved to Marshmallow yet) 
     exclude group: 'com.android.support', module: 'support-annotations' 
     exclude group: 'com.android.support', module: 'appcompat' 
     exclude group: 'com.android.support', module: 'support-v4' 
     exclude module: 'recyclerview-v7' 
    } 
    androidTestCompile('com.android.support.test.espresso:espresso-idling-resource:2.2.1') { 
     // Necessary if your app targets Marshmallow (since Espresso 
     // hasn't moved to Marshmallow yet) 
     exclude group: 'com.android.support', module: 'support-annotations' 
    } 
    androidTestCompile('com.android.support.test:runner:0.4.1') { 
     // Necessary if your app targets Marshmallow (since the test runner 
     // hasn't moved to Marshmallow yet) 
     exclude group: 'com.android.support', module: 'support-annotations' 
    } 
    androidTestCompile('com.android.support.test:rules:0.4.1') { 
     // Necessary if your app targets Marshmallow (since the test runner 
     // hasn't moved to Marshmallow yet) 
     exclude group: 'com.android.support', module: 'support-annotations' 

    } 
}

Test.java

@RunWith(AndroidJUnit4.class) 
public class Test1 { 

    @Rule 
    public ActivityTestRule<MainActivity> activityTestRule = 
      new ActivityTestRule<>(MainActivity.class, true, false); 

    @Before 
    public void setUp() { 
     activityTestRule.launchActivity(new Intent()); 
    } 

    @After 
    public void cleanUp() { 
    } 

    @Test 
    public void test() { 
    } 
}

跟踪在运行窗口：

Testing started at 12:14 ... 
Waiting for device. 
Target device: 3_2_API_10 [emulator-5554] 
Uploading file 
    local path: C:\Users\xyz\Documents\Development\AndroidStudio\AppTest\app\build\outputs\apk\app-debug.apk 
    remote path: /data/local/tmp/com.example.xyz.apptest 
No apk changes detected. 
Skipping file upload, force stopping package instead. 
DEVICE SHELL COMMAND: am force-stop com.example.xyz.apptest 
Uploading file 
    local path: C:\Users\xyz\Documents\Development\AndroidStudio\AppTest\app\build\outputs\apk\app-debug-androidTest-unaligned.apk 
    remote path: /data/local/tmp/com.example.xyz.apptest.test 
No apk changes detected. 
Skipping file upload, force stopping package instead. 
DEVICE SHELL COMMAND: am force-stop com.example.xyz.apptest.test 
Running tests 
Test running startedTest running failed: Instrumentation run failed due to 'Process crashed.' 
Empty test suite.

的logcat：未发现易感差异。

来源

2015-10-18 passerby

同样的情况也发生在我身上。是否有可能在模块中运行所有测试用例？ – thedarkpassenger

@thedarkpassenger请参阅下面的答案。我增加了模拟器中的ram数量，并突然发挥作用...模块中定义的所有测试正在执行。 – passerby

从基于API 10的模拟器切换到API 17修复了问题。

尽管API 10在上周运行良好，但它变得不可预测。有时它运行，大部分没有。删除单个测试方法可能会使其工作，并将其放回可能会使其工作（或不工作）。试图运行第五次测试可能会让它再次工作...

更新2016年3月16日：增加资源的API 10模拟器可供再次API 10的测试...

来源

2015-10-20 10:23:47 passerby

Android Espresso：“未发现测试”，“程序崩溃”

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