fix failing test with empty media src string
diff --git a/tests/tests.js b/tests/tests.js
index a2b427f..fc6d4a9 100644
--- a/tests/tests.js
+++ b/tests/tests.js
@@ -260,7 +260,7 @@
         });
 
         it("media.spec.18 should contain a setRate function", function () {
-            var media1 = new Media();
+            var media1 = new Media("dummy");
             expect(media1.setRate).toBeDefined();
             expect(typeof media1.setRate).toBe('function');
             media1.release();