added a simple unit test on validMethod

Author: Luca Trazzi

test/unit/providerSpec.js

@@ -160,4 +160,12 @@ describe('provider', function() {
     expect(successSpy2).not.toHaveBeenCalled();
     expect(errorSpy2).toHaveBeenCalled();
   }));
+  
+  it('set/get validMethod', inject(function() {        
+    expect(validationProvider.getValidMethod()).toEqual(null);
+    
+    validationProvider.setValidMethod('submit');
+    
+    expect(validationProvider.getValidMethod()).toEqual('submit');        
+  }));
 });