I am using Pytest. I have a function with several arguments and I am using a parametrized test to check different combinations of those arguments. But I would like to be able to not have all arguments in all test cases. Is there a way that I can indicate in the tuples where I define the test cases that some arguments are empty? Here is a minimal example. In the case below I would like to have another test wher I pass only the first argument, e.g. 1 and the expected result 5 (1+4). I have tried (1,,5) and (1,None,5) but none seems to work. The example below is a very simplified case, I could probably have a separate test function. But in a general case with lots of arguments it would be quite helpful to be able to parametrize the function to test not passing a each argument. import pytest def foo(arg1, arg2=4): return arg1+arg2 @pytest.mark.parametrize("first,second,expected_result",[(1,2,3),(2,3,5)]) def test(first,second,expected_result): assert foo(first,second) == expected_result Continue reading...
