def test_adding(self):
add = Adder()
for i in range(-10, 10):
for j in range(-10, 10):
self.assertEqual(i + j, add.calc(i, j))
def test_adding(self):
adder = Adder()
for x in range(-5, 10):
for y in range(-5, 10):
self.assertEqual(x + y, adder.calc(x, y))