title: Android : basic test with espresso
body: <p>I'm trying to add a basic espresso test in my android application. My test file (located in androidTest/java folder) was generated by the 'record espresso test' feature and is as below :</p>
  
  <pre><code>package info.my_xxxx.activities;
  
  
  import android.support.test.espresso.ViewInteraction;
  import android.support.test.rule.ActivityTestRule;
  import android.support.test.runner.AndroidJUnit4;
  import android.test.suitebuilder.annotation.LargeTest;
  import android.view.View;
  import android.view.ViewGroup;
  import android.view.ViewParent;
  
  import org.hamcrest.Description;
  import org.hamcrest.Matcher;
  import org.hamcrest.TypeSafeMatcher;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import info.my_xxxx.R;
  
  import static android.support.test.espresso.Espresso.onView;
  import static android.support.test.espresso.action.ViewActions.click;
  import static android.support.test.espresso.assertion.ViewAssertions.matches;
  import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
  import static android.support.test.espresso.matcher.ViewMatchers.withId;
  import static android.support.test.espresso.matcher.ViewMatchers.withText;
  import static org.hamcrest.Matchers.allOf;
  
  @LargeTest
  @RunWith(AndroidJUnit4.class)
  public class AdviceDisplay2 {
  
      @Rule
      public IntentsTestRule&lt;SplashActivity&gt; mActivityTestRule = new IntentsTestRule&lt;&gt;(SplashActivity.class);
  
      @Test
      public void adviceDisplay2() {
          // Added a sleep statement to match the app's execution delay.
          // The recommended way to handle such scenarios is to use Espresso idling resources:
          // https://google.github.io/android-testing-support-library/docs/espresso/idling-resource/index.html
          try {
              Thread.sleep(10000);
          } catch (InterruptedException e) {
              e.printStackTrace();
          }
  
          ViewInteraction appCompatImageView = onView(
                  allOf(withId(R.id.third_button),
                          childAtPosition(
                                  allOf(withId(R.id.linear_layout),
                                          childAtPosition(
                                                  withId(R.id.bottom_button),
                                                  0)),
                                  2),
                          isDisplayed()));
          appCompatImageView.perform(click());
  
          ViewInteraction textView = onView(
                  allOf(withId(R.id.advice),
                          childAtPosition(
                                  allOf(withId(R.id.RelativeLayout01),
                                          childAtPosition(
                                                  withId(android.R.id.content),
                                                  0)),
                                  1),
                          isDisplayed()));
          textView.check(matches(isDisplayed()));
  
      }
  
      private static Matcher&lt;View&gt; childAtPosition(
              final Matcher&lt;View&gt; parentMatcher, final int position) {
  
          return new TypeSafeMatcher&lt;View&gt;() {
              @Override
              public void describeTo(Description description) {
                  description.appendText("Child at position " + position + " in parent ");
                  parentMatcher.describeTo(description);
              }
  
              @Override
              public boolean matchesSafely(View view) {
                  ViewParent parent = view.getParent();
                  return parent instanceof ViewGroup &amp;&amp; parentMatcher.matches(parent)
                          &amp;&amp; view.equals(((ViewGroup) parent).getChildAt(position));
              }
          };
      }
  }
  </code></pre>
  
  <p>As you can see, it's just about clicking on a view and checking if a view is existing or not... My gradle file (module level) is:</p>
  
  <pre><code>buildscript {
      repositories {
          maven { url 'https://maven.fabric.io/public' }
      }
  
      dependencies {
          classpath 'io.fabric.tools:gradle:1.+'
      }
  }
  apply plugin: 'com.android.application'
  apply plugin: 'kotlin-android'
  apply plugin: 'kotlin-android-extensions'
  apply plugin: 'io.fabric'
  
  repositories {
      maven { url 'https://maven.fabric.io/public' }
      google()
      mavenCentral()
  }
  
  android {
  
      dexOptions {
          javaMaxHeapSize "4g"
      }
  
      compileSdkVersion 26
      buildToolsVersion '26.0.2'
  
      defaultConfig {
          applicationId "info.xxx"
          minSdkVersion 16
          targetSdkVersion 26
          multiDexEnabled true
          testInstrumentationRunner 'android.support.test.runner.AndroidJUnitRunner'
  
      }
  
      signingConfigs{
          release {
              v2SigningEnabled false
          }
      }
  
      compileOptions {
          sourceCompatibility JavaVersion.VERSION_1_7
          targetCompatibility JavaVersion.VERSION_1_7
      }
  
      buildTypes {
          release {
              debuggable false
              minifyEnabled true
              shrinkResources true
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
          }
      }
  }
  
  dependencies {
  
      implementation  'com.google.android.gms:play-services-analytics:11.8.0'
  
      implementation 'com.android.support:appcompat-v7:26.1.0'
      implementation 'com.android.support:design:26.1.0'
  
      implementation 'com.android.support:multidex:1.0.2'
      implementation ('com.squareup:android-times-square:1.7.2@aar'){
          exclude group: 'com.android.support', module: 'mediarouter-v7'
      }
  
      implementation files('libs/GraphView-3.1.3.jar')
      implementation('com.crashlytics.sdk.android:crashlytics:2.6.8@aar') {
          transitive = true
      }
  
      // Kotlin related
      implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
      implementation "org.jetbrains.anko:anko-appcompat-v7-commons:$anko_version"
      implementation "org.jetbrains.anko:anko-design:$anko_version"
      implementation "org.jetbrains.anko:anko-design-coroutines:$anko_version"
  
      // Required for local unit tests (JUnit 4 framework)
      testImplementation 'junit:junit:4.12'
  
      //Mockito framework
      testImplementation 'org.mockito:mockito-core:1.10.19'
  
      // Required for instrumented tests
      androidTestImplementation 'com.android.support:support-annotations:26.+'
      androidTestImplementation ('com.android.support.test:runner:1.0.1'){
          exclude module: 'support-annotations'
      }
      androidTestImplementation ('com.android.support.test.espresso:espresso-core:3.0.1'){
          exclude module: 'support-annotations'
      }
  
  }
  </code></pre>
  
  <p>All the dependencies seems to be ok but when running the test from android studio, I got this message after few minutes :</p>
  
  <blockquote>
    <p>android.support.test.espresso.AppNotIdleException: Looped for 2969
    iterations over 60 SECONDS. The following Idle Conditions failed . at
    dalvik.system.VMStack.getThreadStackTrace(Native Method) at
    java.lang.Thread.getStackTrace(Thread.java:1536) at
    android.support.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:90)
    at
    android.support.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:52)
    at
    android.support.test.espresso.ViewInteraction.waitForAndHandleInteractionResults(ViewInteraction.java:312)
    at
    android.support.test.espresso.ViewInteraction.desugaredPerform(ViewInteraction.java:167)
    at
    android.support.test.espresso.ViewInteraction.perform(ViewInteraction.java:110)
    at
    info.xxx.activities.AdviceDisplay2.adviceDisplay2(AdviceDisplay2.java:56)
    at java.lang.reflect.Method.invoke(Native Method) at
    org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at
    org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at
    org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at
    org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at
    android.support.test.rule.ActivityTestRule$ActivityStatement.evaluate(ActivityTestRule.java:433)
    at org.junit.rules.RunRules.evaluate(RunRules.java:20) at
    org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) at
    org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at
    org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
    org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
    org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
    org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
    org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
    org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
    org.junit.runners.Suite.runChild(Suite.java:128) at
    org.junit.runners.Suite.runChild(Suite.java:27) at
    org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) at
    org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) at
    org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) at
    org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) at
    org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) at
    org.junit.runners.ParentRunner.run(ParentRunner.java:363) at
    org.junit.runner.JUnitCore.run(JUnitCore.java:137) at
    org.junit.runner.JUnitCore.run(JUnitCore.java:115) at
    android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:58)
    at
    android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:375)
    at
    android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2074)</p>
    
    <p>Tests ran to completion.</p>
  </blockquote>
  
  <p>Line 56 is :</p>
  
  <p><code>appCompatImageView.perform(click());</code></p>
  
  <p>Thank you for reading</p>