Add artistic filter test (#65)

Author: nitzanj

cloudinary-core/src/test/java/com/cloudinary/test/CloudinaryTest.java

@@ -406,6 +406,13 @@ public void testEffectWithParam() {
         assertEquals(DEFAULT_UPLOAD_PATH + "e_sepia:10/test", result);
     }
 
+    @Test
+    public void testArtisticFilter(){
+        Transformation transformation = new Transformation().effect("art", "incognito");
+        String result = cloudinary.url().transformation(transformation).generate("test");
+        assertEquals(DEFAULT_UPLOAD_PATH + "e_art:incognito/test", result);
+    }
+
     @Test
     public void testDensity() {
         // should support density