def test_factorial_of_neg():
n = -1
ans = None
assert factorial.factorial_recursion(n) == ans
assert factorial.factorial_recursion_memo(n) == ans
assert factorial.factorial_iter(n) == ans
def test_factorial_of_zero():
n = 0
assert factorial.factorial_recursion(n) == 1
assert factorial.factorial_recursion_memo(n) == 1
assert factorial.factorial_iter(n) == 1
def test_the_one_case(self):
'''
make sure than 1! = 1
'''
self.assertEqual(factorial_while(1), 1)
self.assertEqual(factorial_recursion(1), 1)
def test_factorial_of_10():
n = 10
ans = 3628800
assert factorial.factorial_recursion(n) == ans
assert factorial.factorial_recursion_memo(n) == ans
assert factorial.factorial_iter(n) == ans
def test_the_zero_case(self):
'''
make sure that both implementations accurately report that 0! = 1
'''
self.assertEqual(factorial_recursion(0), 1)
self.assertEqual(factorial_while(0), 1)
def test_negative_case(self):
'''
make sure that a negative case evaluates to false
'''
self.assertFalse(factorial_recursion(-3))
self.assertFalse(factorial_while(-3))
def test_factorial_recursion_is_working(self):
'''
make sure that 4! = 24 for the recursion implementation
'''
self.assertEqual(factorial_recursion(4), 24)
def test_the_one_case(self): ''' make sure than 1! = 1 ''' self.assertEqual(factorial_while(1), 1) self.assertEqual(factorial_recursion(1), 1)
def test_negative_case(self): ''' make sure that a negative case evaluates to false ''' self.assertFalse(factorial_recursion(-3)) self.assertFalse(factorial_while(-3))
def test_the_zero_case(self): ''' make sure that both implementations accurately report that 0! = 1 ''' self.assertEqual(factorial_recursion(0), 1) self.assertEqual(factorial_while(0), 1)
def test_factorial_recursion_is_working(self): ''' make sure that 4! = 24 for the recursion implementation ''' self.assertEqual(factorial_recursion(4), 24)
