def tests(self):
self.assertListEqual(Math.abc_factors_of(3, -5, -2), [[1, -6]])
self.assertListEqual(Math.abc_factors_of(6, 1, -2), [[-3, 4]])
self.assertListEqual(Math.abc_factors_of(6, -47, 77), [[-14, -33]])
def abc_factors_of(self):
""" Return factors of ac that together sum b. """
entry = self.get_entry()
if self.input_is_valid(entry, 3):
result = Math.abc_factors_of(*entry)
self.result.config(text=result)
