def test_calculate_none_trailing_zeros(self):
"""test: return none trailing zeros"""
self.assertEqual(zeros(0), 0)
def test_optimized_equals_calc_zeros_with_args_thirty(self):
"""test: optimized function calc zeros equals
calc zeros function with arg = 30"""
self.assertEqual(zeros_optimized(30), zeros(30))
def test_optimized_equals_calc_zeros(self):
"""test: optimized function calc zeros equals
calc zeros function"""
self.assertEqual(zeros_optimized(0), zeros(0))
def test_optimized_equals_calc_zeros_with_args_six(self):
"""test: optimized function calc zeros equals
calc zeros function with arg = 6"""
self.assertEqual(zeros_optimized(6), zeros(6))
def test_calculate_seven_trailing_zeros(self):
"""test: return seven trailing zeros"""
self.assertEqual(zeros(30), 7)