def test_id(x):
"""
Write a test that ensures some other property holds for your functions.
"""
assert operators.id(x) == x
assert_close(x, operators.neg(operators.neg(x)))
if x != 0:
assert_close(x, operators.inv(operators.inv(x)))
def test_inv(x):
"""
Write a test that ensures some other property holds for your functions.
"""
if x != 0:
assert_close(operators.mul(x, operators.inv(x)), 1)
assert_close(operators.add(x, operators.neg(x)), 0)
def test_same_as_python(x, y):
"Check that the main operators all return the same value of the python version"
assert_close(mul(x, y), x * y)
assert_close(add(x, y), x + y)
assert_close(neg(x), -x)
assert_close(max(x, y), x if x > y else y)
if x != 0.0:
assert_close(inv(x), 1.0 / x)
def inv(a):
return operators.inv(a + 3.5)
def inv(a):
"Invert after adding"
return operators.inv(a + 3.5)