def test_save_graph(self):
     self.send_signal("Data", self.iris)
     with set_png_graph_save() as fname:
         self.widget.save_graph()
         self.assertGreater(os.path.getsize(fname), 1000)
 def test_save_graph(self):
     self.send_signal("Data", self.iris)
     with set_png_graph_save() as fname:
         self.widget.save_graph()
         self.assertGreater(os.path.getsize(fname), 10000)