def setUp(self):
     self.effect = Effect()
     self.document = self.effect.parse("TestFiles/unit_test_svg_ellipse.svg")
     root = self.effect.document.getroot()
     self.node = self.findTag(root, "ellipse")
     self.canvas = Canvas(0, 0)    
     self.ellipse = Ellipse(None, self.node, self.canvas, None)