def test_negative_number(self):
"""
Calling fibonacci at a negative number should raise an index error.
"""
with self.assertRaises(IndexError):
fibonacci_n(-2)
def test_positive_numbers(self):
"""
Calling fibonacci with a positive number should return a
"""
self.assertListEqual(list(fibonacci_n(5)), [0, 1, 1, 2, 3])
self.assertListEqual(list(fibonacci_n(8)), [0, 1, 1, 2, 3, 5, 8, 13])
def test_not_a_number(self):
with self.assertRaises(TypeError):
fibonacci_n("EMC Cloud Services")
def test_zero_length(self):
"""
Calling fibonacci(0) should return an empty list.
"""
self.assertListEqual(list(fibonacci_n(0)), [])
