Question

I wanted to run the following test:

package com.xxx.yyy;

import android.content.Context;
import androidx.test.InstrumentationRegistry;
import androidx.test.runner.AndroidJUnit4;

import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

/**
 * Instrumented test, which will execute on an Android device.
 *
 * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
 */
@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {
    @Test
    public void useAppContext() {
        // Context of the app under test.
        Context appContext = InstrumentationRegistry.getTargetContext();

        assertEquals("com.xxx.yyy", appContext.getPackageName());
    }
}

But I get the error in the console:

$ adb shell am instrument -w -r   -e debug false -e class 'com.xxx.yyy.ExampleInstrumentedTest' com.xxx.yyy.test/android.support.test.runner.AndroidJUnitRunner
Client not ready yet..
Started running tests
Test running failed: Instrumentation run failed due to 'Process crashed.'
Empty test suite.

I can not figgure out why its not working.

Here is my gradle file:

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'

apply plugin: 'org.greenrobot.greendao' // das kann dann später weg
//apply plugin: 'kotlin-kapt' // if using Kotlin
//apply plugin: 'io.objectbox'


android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.xxx.yyy"
        minSdkVersion 21
        targetSdkVersion 28    
        versionCode 130
        versionName "1.3.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

greendao {
    schemaVersion 4
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.0'
    implementation 'com.google.android.material:material:1.0.0'
    implementation 'androidx.vectordrawable:vectordrawable:1.0.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha2'
    implementation 'org.greenrobot:greendao:3.2.2'
    implementation 'com.google.firebase:firebase-core:16.0.3'
    implementation 'com.google.firebase:firebase-ads:15.0.1'
    testImplementation 'junit:junit:4.12'
    implementation 'com.github.PhilJay:MPAndroidChart:v3.0.2'
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test:rules:1.0.2'
}

apply plugin: 'com.google.gms.google-services'

Any suggestions?

Answer 1

我自己找到了解决方案。我已更新为AndroidX，因此还需要从以下位置更新build.gradle文件：

testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"

到

testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

Answer 2

我得到了错误：

Test running failed: Instrumentation run failed due to 'Process crashed.'

就我而言，android测试控制台仅显示以上错误，没有任何细节

但是，在logcat中，它显示了错误的详细信息，就我而言，这是因为我忘记在AndroidManifest.xml中添加admob app_id

如此

有关详细信息，请参见logcat

Answer 3

从以下位置更新JUnit4后，我得到了相同的错误：

androidTestImplementation 'junit:junit:4.12

到

androidTestImplementation 'junit:junit:4.13

当我降级到以下级别时，错误消失了：

androidTestImplementation 'junit:junit:4.12

Answer 4

androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
androidTestImplementation 'androidx.test:runner:1.1.1'
androidTestImplementation 'androidx.test:core:1.1.0'
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
androidTestImplementation 'androidx.test:rules:1.1.1'

除了androidx.test.runner.AndroidJunitRunner配置外，还请检查依赖项。上面的代码对我有用。

Answer 5

所以我有相同的症状，但是在进行所有这些更改之后，我发现我的项目build.gradle文件中的以下配置是个问题

buildTypes{
     debug {
        debuggable true
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }

似乎在升级到androidx之后，minifyEnable和rinkleResources的行为有所不同，可能早些发生，但我现在才意识到。注释掉这些行以解决我的“未找到测试”问题。

buildTypes{
     debug {
        debuggable true
        //minifyEnabled true
        //shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }

Answer 6

出现此错误是因为我在build.gradle中将testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"更改为testInstrumentationRunner "androidx.test.ext.junit.runners.AndroidJUnit4"。在LogCat中，我看到了：

java.lang.RuntimeException: Unable to instantiate instrumentation ComponentInfo{com.example.debug.test/androidx.test.ext.junit.runners.AndroidJUnit4}: java.lang.ClassNotFoundException: Didn't find class "androidx.test.ext.junit.runners.AndroidJUnit4" on path: DexPathList[[zip file ...

Instrumentation run failed due to &#39;Process crashed.&#39;

6 个答案:

Instrumentation run failed due to 'Process crashed.'