[android] - bring back style loading test to native map, add onDestroy to after test

platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/maps/NativeMapViewTest.kt

@@ -13,6 +13,7 @@ import com.mapbox.mapboxsdk.maps.renderer.MapRenderer
 import com.mapbox.mapboxsdk.style.layers.TransitionOptions
 import com.mapbox.mapboxsdk.testapp.utils.TestConstants
 import junit.framework.Assert.*
+import org.junit.After
 import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
@@ -41,6 +42,30 @@ class NativeMapViewTest {
         nativeMapView.resizeView(WIDTH, HEIGHT)
     }
 
+    @After
+    @UiThreadTest
+    fun after() {
+        nativeMapView.destroy()
+    }
+
+    @Test
+    @UiThreadTest
+    fun testSetStyleUrl() {
+        val expected = Style.DARK
+        nativeMapView.styleUrl = expected
+        val actual = nativeMapView.styleUrl
+        assertEquals("Style URL should match", expected, actual)
+    }
+
+    @Test
+    @UiThreadTest
+    fun testSetStyleJson() {
+        val expected = "{}"
+        nativeMapView.styleJson = expected
+        val actual = nativeMapView.styleJson
+        assertEquals("Style JSON should match", expected, actual)
+    }
+
     @Test
     @UiThreadTest
     fun testBearing() {