[android] #2809 - addPolylines and removeAnnotations in JNI, added feature activity + sanity test case

android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/PolylineActivityTest.java

@@ -0,0 +1,34 @@
+package com.mapbox.mapboxsdk.testapp;
+
+import android.support.test.rule.ActivityTestRule;
+import android.support.test.runner.AndroidJUnit4;
+import android.test.suitebuilder.annotation.LargeTest;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/**
+ * Tests on PolyLineActivity
+ */
+@RunWith(AndroidJUnit4.class)
+@LargeTest
+public class PolylineActivityTest extends BaseTest {
+
+    @Rule
+    public ActivityTestRule<PolylineActivity> mActivityRule = new ActivityTestRule<>(
+            PolylineActivity.class);
+
+    private PolylineActivity mActivity = null;
+
+    @Before
+    public void setActivity() {
+        mActivity = mActivityRule.getActivity();
+    }
+
+    @Test
+    public void testSanity() {
+        checkViewIsDisplayed(R.id.mapView);
+    }
+}