[android] LatLngBounds: latNorth should be greater or equal than latS…

…outh

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/geometry/LatLngBounds.java

@@ -228,6 +228,8 @@ public LatLng[] toLatLngs() {
    * This values of latNorth and latSouth should be in the range of [-90, 90],
    * see {@link GeometryConstants#MIN_LATITUDE} and {@link GeometryConstants#MAX_LATITUDE},
    * otherwise IllegalArgumentException will be thrown.
+   * latNorth should be greater or equal latSouth, otherwise  IllegalArgumentException will be thrown.
+   *
    * <p>
    * This method doesn't recalculate most east or most west boundaries.
    * Note that lonEast and lonWest will be wrapped to be in the range of [-180, 180],
@@ -257,6 +259,10 @@ public static LatLngBounds from(
       throw new IllegalArgumentException("latitude must be between -90 and 90");
     }
 
+    if (latNorth < latSouth) {
+      throw new IllegalArgumentException("LatSouth cannot be less than latNorth");
+    }
+
     lonEast = LatLng.wrap(lonEast, GeometryConstants.MIN_LONGITUDE, GeometryConstants.MAX_LONGITUDE);
     lonWest = LatLng.wrap(lonWest, GeometryConstants.MIN_LONGITUDE, GeometryConstants.MAX_LONGITUDE);
 

platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/geometry/LatLngBoundsTest.java

@@ -365,4 +365,11 @@ public void testConstructorChecksWestLongitudeInfinity() {
     exception.expectMessage("longitude must not be infinite");
     LatLngBounds.from(20, 20, 0, Double.POSITIVE_INFINITY);
   }
+
+  @Test
+  public void testConstructorCheckLatSouthGreaterLatNorth() {
+    exception.expect(IllegalArgumentException.class);
+    exception.expectMessage("LatSouth cannot be less than latNorth");
+    LatLngBounds.from(0, 20, 20, 0);
+  }
 }