def test_should_raise_exception(self):
with self.assertRaises(TypeError):
x = 4
increment.inc2(x, n="xyz")
def test_should_increment_by_n(self):
n = 3
actual = increment.inc2(self.x, n=3)
self.assertEqual(self.x + n, actual, "what!")
def test_should_catch_exception(self):
increment.inc2(3, n="xyz")