platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/activity/BaseActivityTest.java


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package com.mapbox.mapboxsdk.testapp.activity;

import android.app.Activity;
import android.support.test.espresso.Espresso;
import android.support.test.espresso.IdlingResourceTimeoutException;
import android.support.test.rule.ActivityTestRule;

import timber.log.Timber;

import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.mapboxsdk.testapp.utils.OnMapReadyIdlingResource;
import com.mapbox.mapboxsdk.testapp.utils.ScreenshotUtil;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;

import static android.support.test.espresso.Espresso.onView;
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;

public abstract class BaseActivityTest {

  @Rule
  public ActivityTestRule<Activity> rule = new ActivityTestRule<>(getActivityClass());
  protected MapboxMap mapboxMap;
  protected OnMapReadyIdlingResource idlingResource;

  @Before
  public void beforeTest() {
    try {
      Timber.e("@Before test: register idle resource");
      idlingResource = new OnMapReadyIdlingResource(rule.getActivity());
      Espresso.registerIdlingResources(idlingResource);
      checkViewIsDisplayed(R.id.mapView);
      mapboxMap = idlingResource.getMapboxMap();
    } catch (IdlingResourceTimeoutException idlingResourceTimeoutException) {
      Timber.e("Idling resource timed out. Couldn't not validate if map is ready.");
      throw new RuntimeException("Could not start test for " + getActivityClass().getSimpleName() + ".\n"
        + "The ViewHierarchy doesn't contain a view with resource id = R.id.mapView or \n"
        + "the Activity doesn't contain an instance variable with a name equal to mapboxMap.\n"
        + "You can resolve this issue be implementing the requirements above or\n add "
        + getActivityClass().getSimpleName() + " to the excludeActivities array in `generate-test-code.js`.\n");
    }
  }

  protected abstract Class getActivityClass();

  protected void checkViewIsDisplayed(int id) {
    onView(withId(id))
      .check(matches(isDisplayed()));
  }

  protected void takeScreenshot(final String name) {
    final Activity activity = rule.getActivity();
    activity.runOnUiThread(new Runnable() {
      @Override
      public void run() {
        ScreenshotUtil.take(activity, name);
      }
    });
  }

  @After
  public void afterTest() {
    Timber.e("@After test: unregister idle resource");
    Espresso.unregisterIdlingResources(idlingResource);
  }
}