Testing the same function with different parameters

Question

I am trying to test a function multiple times using different parameters. The return value should be True.

def testConfiguration(small,medium,large):
    ...
    if (everything goes well):
        return True
    else:
        return False

testConfiguration(0,0,1)
testConfiguration(1,2,1)
testConfiguration(1,3,1)

What's the best way to go about doing this in pytest? I want to avoid multiple functions acting as assert True wrappers e.g

def test_ConfigA():
    assert testConfiguration(0,0,1) == True

def test_ConfigB():
    assert testConfiguration(1,2,1) == True

...

In the future, please try to research questions first, and treat Stack Overflow as a last resort. A straightforward search will immediately pull up relevant documentation. — Karl Knechtel
– Karl Knechtel, Commented Jan 7, 2022 at 10:25
Each assert is a "test" and you are free to group them in functions as you see fit. Indeed having a function for every assert might be considered over-the-top, for simple tests I usually start with a single function and split it in more "test cases" only when I need. — Florin C.
– Florin C., Commented Jan 7, 2022 at 10:26

Karl Knechtel · Accepted Answer · 2022-01-07 10:51:00Z

3

Use @pytest.mark.parametrize()

@pytest.mark.parametrize("small, medium, large, out", [
    (0,1,1, True),
    (1,2,1, True),
    (1,1,1, False),
])
def test_all(small, medium, large, out):
     assert testConfiguration(small, medium, large) == out

edited Jan 7, 2022 at 10:51

Karl Knechtel

61.4k14 gold badges131 silver badges193 bronze badges

answered Jan 7, 2022 at 10:27

mx0

7,29812 gold badges57 silver badges57 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Testing the same function with different parameters

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related