Prueba de interfaz de usuario de Espresso para Android: falla en la ejecución de la prueba: Error en la ejecución de la instrumentación debido a 'java.lang.IllegalAccessError'

Me enfrenté con el siguiente problema:

Cuando estoy tratando de iniciar una prueba de interfaz de usuario independiente usando Espresso siempre obtengo el siguiente mensaje de error de la consola sin ejecutar la prueba.

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Test running startedTest running failed: Instrumentation run failed due to 'java.lang.IllegalAccessError' Empty test suite. 

Así que intenté ejecutar comando:

  gradle -q dependencies 

Y obtuve el siguiente resultado:

 androidTestCompile - Classpath for compiling the androidTest sources. +--- com.android.support:support-annotations:23.0.1 +--- com.android.support.test:runner:0.3 | +--- com.android.support.test:exposed-instrumentation-api-publish:0.3 | +--- junit:junit:4.12 | | \--- org.hamcrest:hamcrest-core:1.3 | \--- com.android.support:support-annotations:22.2.0 -> 23.0.1 +--- com.android.support.test:rules:0.3 | \--- com.android.support.test:runner:0.3 (*) +--- com.android.support.test.espresso:espresso-core:2.1 -> 2.2 | +--- com.android.support.test.espresso:espresso-idling-resource:2.2 | +--- com.squareup:javawriter:2.1.1 | +--- javax.inject:javax.inject:1 | +--- org.hamcrest:hamcrest-library:1.3 | | \--- org.hamcrest:hamcrest-core:1.3 | +--- com.android.support.test:rules:0.3 (*) | +--- org.hamcrest:hamcrest-integration:1.3 | | \--- org.hamcrest:hamcrest-library:1.3 (*) | +--- com.google.code.findbugs:jsr305:2.0.1 | +--- javax.annotation:javax.annotation-api:1.2 | \--- com.android.support.test:runner:0.3 (*) +--- com.android.support.test.espresso:espresso-intents:2.2 | \--- com.android.support.test.espresso:espresso-core:2.2 (*) +--- com.android.support.test.espresso:espresso-web:2.2 | +--- org.ccil.cowan.tagsoup:tagsoup:1.2 | +--- com.android.support:support-annotations:22.2.0 -> 23.0.1 | \--- com.android.support.test.espresso:espresso-core:2.2 (*) +--- com.android.support.test.uiautomator:uiautomator-v18:2.1.1 +--- com.android.support.test.espresso:espresso-contrib:2.2 | +--- com.google.android.apps.common.testing.accessibility.framework:accessibility-test-framework:2.0 | | \--- org.hamcrest:hamcrest-core:1.3 | +--- com.android.support:support-v4:22.2.0 | | \--- com.android.support:support-annotations:22.2.0 -> 23.0.1 | +--- com.android.support:recyclerview-v7:22.2.0 | | +--- com.android.support:support-annotations:22.2.0 -> 23.0.1 | | \--- com.android.support:support-v4:22.2.0 (*) | \--- com.android.support.test.espresso:espresso-core:2.2 (*) \--- com.android.support:multidex-instrumentation:1.0.1 

He intentado encontrar la solución en este tema, pero sin la suerte.

Las pruebas fallan después de la actualización de Espresso 2 (falló: La ejecución de instrumentación falló debido a 'java.lang.IllegalAccessError')

No sé qué es exactamente lo que debo hacer para actualizar la prueba de trabajo.

Aquí está el archivo de configuración app.gradle

  android { compileSdkVersion 23 buildToolsVersion "23.0.0" defaultConfig { applicationId "test.my.app" minSdkVersion 18 targetSdkVersion 23 versionCode 1 versionName "1.0" testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" // Enabling multidex support. multiDexEnabled true } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } lintOptions { abortOnError false } packagingOptions { exclude 'LICENSE.txt' exclude 'META-INF/LICENSE.txt' exclude 'META-INF/NOTICE.txt' } } repositories { jcenter() mavenCentral() maven { url "https://repo.commonsware.com.s3.amazonaws.com" } maven { url "https://oss.sonatype.org/content/repositories/snapshots/" } maven { url "https://jitpack.io" } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) compile 'com.android.support:appcompat-v7:23.0.1' compile 'com.google.android.gms:play-services:7.8.0' compile 'com.mcxiaoke.volley:library:1.0.18' compile 'com.orhanobut:logger:1.11' compile 'com.google.code.gson:gson:2.3.1' compile 'com.android.support:design:23.0.1' // UI TESTING DEPENDENCIES androidTestCompile 'com.android.support:support-annotations:23.0.1' androidTestCompile 'com.android.support.test:runner:0.3' androidTestCompile 'com.android.support.test:rules:0.3' //androidTestCompile 'com.android.support.test:testing-support-lib:0.1' androidTestCompile 'com.android.support.test.espresso:espresso-core:2.1' androidTestCompile 'com.android.support.test.espresso:espresso-intents:2.2' androidTestCompile 'com.android.support.test.espresso:espresso-web:2.2' androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.1' androidTestCompile 'com.android.support.test.espresso:espresso-contrib:2.2' androidTestCompile('com.android.support:multidex-instrumentation:1.0.1') { exclude group: 'com.android.support', module: 'multidex' } // ORM DATABASE DEPENDENCIES compile 'com.michaelpardo:activeandroid:3.1.0-SNAPSHOT' // STETHO CORE compile 'com.facebook.stetho:stetho:1.1.1' compile 'com.facebook.stetho:stetho-urlconnection:1.1.1' compile 'com.facebook.stetho:stetho-okhttp:1.1.1' // GOOGLE ANALYTICS compile 'com.google.android.gms:play-services-analytics:7.8.0' // JODA TIME FOR ANDROID compile 'net.danlew:android.joda:2.8.2' // SECURE SHARED PREFERENCES compile 'com.scottyab:secure-preferences-lib:0.1.3' // MATERIAL DIALOG compile 'com.avast:android-styled-dialogs:2.2.0' // SQL CIPHER compile 'com.commonsware.cwac:sqlcipher-for-android:3.3.1' // HTML PARSER compile 'org.jsoup:jsoup:1.8.3' // MULTIDEX SUPPORT compile 'com.android.support:multidex:1.0.1' // SECOND MATERIAL DIALOG compile('com.afollestad.material-dialogs:core:0.8.1.0@aar') { transitive = true } compile('com.afollestad.material-dialogs:commons:0.8.0.1@aar') { transitive = true } // ANDROID BOOTSTRAP compile 'com.beardedhen:androidbootstrap:2.0.0' } 

Y Muestra de la clase TEST:

 @RunWith(AndroidJUnit4.class) public class SignInActivityTest extends ActivityInstrumentationTestCase2<SignInActivity> { public TestHelper tl = new TestHelper(); public SignInActivityTest() { super(SignInActivity.class); } @Before public void setUp() throws Exception { super.setUp(); injectInstrumentation(InstrumentationRegistry.getInstrumentation()); SignInActivity lActivity = getActivity(); } // Insert scenario methods here @Test public void processTest() throws InterruptedException { // TODO: strings which are inserted into inputs should be defined as the string constants // Discuss it with Jan Sedlacek. tl.insertTextIntoInput(R.id.login_txv_username, "test"); tl.insertTextIntoInput(R.id.login_txv_password, "test"); } } 

¿Qué debo cambiar para que esto funcione por favor? Me alegraré por cualquier ayuda.

 // Workaround for Multidex bug in gradle-android-plugin // Replace Multidex dependency with some dummy dependency to avoid dex problems // @see https://code.google.com/p/android/issues/detail?id=194609 project.getConfigurations().all { config -> if (config.name.contains("AndroidTest")) { config.resolutionStrategy.eachDependency { DependencyResolveDetails details -> if (details.requested.name == "multidex") { details.useTarget("de.felixschulze.teamcity:teamcity-status-message-helper:1.2") } } } } 

 @RunWith(AndroidJUnit4.class) public class SignInActivityTest { @Rule public ActivityTestRule<SignInActivity> mActivityRule = new ActivityTestRule(SignInActivity.class); public TestHelper tl = new TestHelper(); @Before public void setUp() throws Exception { //currently you don't use Activity instance in your tests //I just put it here as an example how to get the activity from ActivityTestRule SignInActivity lActivity = mActivityRule.getActivity(); } // Insert scenario methods here @Test public void processTest() throws InterruptedException { tl.insertTextIntoInput(R.id.login_txv_username, "test"); tl.insertTextIntoInput(R.id.login_txv_password, "test"); } @After public void tearDown() throws Exception { //do some stuff if needed } } 

  dependencies { androidTestCompile fileTree(dir: 'libs', include: 'robotium-solo-5.5.4.jar') androidTestCompile 'junit:junit:4.12' androidTestCompile 'com.android.support.test:runner:0.4' // Set this dependency to use JUnit 4 rules androidTestCompile 'com.android.support.test:rules:0.4' }