throw IAE in animate() and easeCamera() when duration <= 0

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/maps/MapboxMap.java

@@ -834,6 +834,10 @@ public final void easeCamera(final CameraUpdate update, final int durationMs, fi
    */
   public final void easeCamera(final CameraUpdate update, final int durationMs, final boolean easingInterpolator,
                                final MapboxMap.CancelableCallback callback, final boolean isDismissable) {
+
+    if (durationMs <= 0) {
+      throw new IllegalArgumentException("Null duration passed into easeCamera");
+    }
     new Handler().post(new Runnable() {
       @Override
       public void run() {
@@ -906,6 +910,9 @@ public final void animateCamera(CameraUpdate update, int durationMs) {
    */
   public final void animateCamera(final CameraUpdate update, final int durationMs,
                                   final MapboxMap.CancelableCallback callback) {
+    if (durationMs <= 0) {
+      throw new IllegalArgumentException("Null duration passed into animageCamera");
+    }
     new Handler().post(new Runnable() {
       @Override
       public void run() {

platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/maps/MapboxMapTest.java

@@ -0,0 +1,47 @@
+package com.mapbox.mapboxsdk.maps;
+
+import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
+import com.mapbox.mapboxsdk.geometry.LatLng;
+import com.mapbox.mapboxsdk.maps.widgets.MyLocationViewSettings;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.mockito.Mockito.mock;
+
+public class MapboxMapTest {
+
+  private MapboxMap mapboxMap;
+
+  @Before
+  public void beforeTest() {
+
+    mapboxMap = new MapboxMap(mock(NativeMapView.class),
+      mock(Transform.class),
+      mock(UiSettings.class),
+      mock(TrackingSettings.class),
+      mock(MyLocationViewSettings.class),
+      mock(Projection.class),
+      mock(MapboxMap.OnRegisterTouchListener.class),
+      mock(AnnotationManager.class),
+      mock(CameraChangeDispatcher.class));
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void testAnimateCameraChecksDurationPositive() {
+    mapboxMap.animateCamera(CameraUpdateFactory.newLatLng(new LatLng(30.0, 30.0)),
+      0, null);
+  }
+
+  @Test(expected = IllegalArgumentException.class)
+  public void testEaseCameraChecksDurationPositive() {
+    mapboxMap.easeCamera(CameraUpdateFactory.newLatLng(new LatLng(30.0, 30.0)),
+      0, null);
+  }
+
+  @After
+  public void afterTest() {
+    mapboxMap = null;
+  }
+}