def test_of_reference(self):
expected="['src'# address]"
self.assertEqual(of_reference(Cell("address"), of_source("src")).str,
expected)
self.assertEqual(of_reference(Range("address"), of_source("src")).str,
expected)
self.assertRaises(TypeError, of_reference, Number("address"))
def test_of_source(self):
self.assertEqual(of_source("test"), "'test'#")
self.assertRaises(TypeError, of_source, 8)
