def test_valid(self):
multiplier, limit = 10, 3
out = list(fibonacci(multiplier, limit)())
self.assertEqual([10, 10, 20], out)
def test_negative_limit(self):
multiplier, limit = 1, -1
with self.assertRaises(ValueError):
list(fibonacci(multiplier, limit)())
def test_zero_limit(self):
multiplier, limit = 1, 0
out = list(fibonacci(multiplier, limit)())
self.assertEqual([], out)
def test_zero_multiplier(self):
multiplier, limit = 0, 1
out = list(fibonacci(multiplier, limit)())
self.assertEqual([0], out)