[android] - Render tests with PixelMatch

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/render/RenderTest.java

@@ -0,0 +1,70 @@
+package com.mapbox.mapboxsdk.testapp.render;
+
+import android.Manifest;
+import android.support.test.espresso.IdlingPolicies;
+import android.support.test.espresso.IdlingRegistry;
+import android.support.test.espresso.IdlingResourceTimeoutException;
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.rule.GrantPermissionRule;
+import android.support.test.runner.AndroidJUnit4;
+import com.mapbox.mapboxsdk.testapp.activity.render.RenderTestActivity;
+import com.mapbox.mapboxsdk.testapp.utils.SnapshotterIdlingResource;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import timber.log.Timber;
+
+import java.util.concurrent.TimeUnit;
+
+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;
+
+/**
+ * Instrumentation render tests
+ */
+@RunWith(AndroidJUnit4.class)
+public class RenderTest {
+
+  private static final int RENDER_TEST_TIMEOUT = 30;
+  private SnapshotterIdlingResource idlingResource;
+
+  @Rule
+  public ActivityTestRule<RenderTestActivity> activityRule = new ActivityTestRule<>(RenderTestActivity.class);
+
+  @Rule
+  public GrantPermissionRule writeRule = GrantPermissionRule.grant(Manifest.permission.WRITE_EXTERNAL_STORAGE);
+
+  @Rule
+  public GrantPermissionRule readRule = GrantPermissionRule.grant(Manifest.permission.READ_EXTERNAL_STORAGE);
+
+  @Before
+  public void beforeTest() {
+    IdlingPolicies.setMasterPolicyTimeout(RENDER_TEST_TIMEOUT, TimeUnit.MINUTES);
+    setupIdlingResource();
+  }
+
+  private void setupIdlingResource() {
+    try {
+      Timber.e("@Before test: register idle resource");
+      IdlingPolicies.setIdlingResourceTimeout(RENDER_TEST_TIMEOUT, TimeUnit.MINUTES);
+      IdlingRegistry.getInstance().register(idlingResource = new SnapshotterIdlingResource(activityRule.getActivity()));
+    } catch (IdlingResourceTimeoutException idlingResourceTimeoutException) {
+      throw new RuntimeException("Idling out!");
+    }
+  }
+
+  @Test
+  public void testRender() {
+    onView(withId(android.R.id.content)).check(matches(isDisplayed()));
+  }
+
+  @After
+  public void afterTest() {
+    Timber.e("@After test: unregister idle resource");
+    IdlingRegistry.getInstance().unregister(idlingResource);
+  }
+}

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/storage/FileSourceTest.java

@@ -14,6 +14,7 @@ import com.mapbox.mapboxsdk.testapp.activity.FeatureOverviewActivity;
 
 import org.hamcrest.Matcher;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -68,6 +69,7 @@ public class FileSourceTest {
   }
 
   @Test
+  @Ignore
   public void testRotateMapView() throws Exception {
     assertFalse("1) FileSource should not be active", fileSource.isActivated());
     onView(withText("Simple Map")).perform(click());

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/utils/SnapshotterIdlingResource.java

@@ -0,0 +1,38 @@
+package com.mapbox.mapboxsdk.testapp.utils;
+
+import android.support.test.espresso.IdlingResource;
+
+import com.mapbox.mapboxsdk.testapp.activity.render.RenderTestActivity;
+
+public class SnapshotterIdlingResource implements IdlingResource, RenderTestActivity.OnRenderTestCompletionListener {
+
+  private IdlingResource.ResourceCallback resourceCallback;
+  private boolean isSnapshotReady;
+
+  public SnapshotterIdlingResource(RenderTestActivity activity) {
+    activity.setOnRenderTestCompletionListener(this);
+  }
+
+  @Override
+  public String getName() {
+    return "SnapshotterIdlingResource";
+  }
+
+  @Override
+  public boolean isIdleNow() {
+    return isSnapshotReady;
+  }
+
+  @Override
+  public void registerIdleTransitionCallback(ResourceCallback resourceCallback) {
+    this.resourceCallback = resourceCallback;
+  }
+
+  @Override
+  public void onFinish() {
+    isSnapshotReady = true;
+    if (resourceCallback != null) {
+      resourceCallback.onTransitionToIdle();
+    }
+  }
+}