def test_decimal_values():
"""
If given the floating values ensure they sum correctly.
"""
assert add(0.1, 0.1, 0.1) == pytest.approx(0.3)
def test_negative_values():
"""
if given the negative values ensure they sum correctly
"""
assert add(-1, -1, -1, -1, -1) == -5
def test_one_two_three():
"""
if given the values 1, 2 and 3 as parameters return 6
"""
assert add(1, 2, 3) == 6
def test_no_add_parameters():
"""
if given no input parameters return zero
"""
assert add() == 0
def test_three_plus_three():
"""
if given 3 and 3 as parameters 6 sb returned
"""
assert add(3, 3) == 6
def test_two_plus_two():
"""
if given 2 and 2 as parameters 4 sb returned
"""
assert add(2, 2) == 4