“ indirect fixture” error using pytest. What is wrong?
def fatorial(n):
if n <= 1:
return 1
else:
return n*fatorial(n - 1)
import pytest
@pytest.mark.parametrize("entrada","esperado",[
(0,1),
(1,1),
(2,2),
(3,6),
(4,24),
(5,120)
])
def testa_fatorial(entrada,esperado):
assert fatorial(entrada) == esperado
The error:
ERROR collecting Fatorial_pytest.py ____________________________________________________________________
In testa_fatorial: indirect fixture '(0, 1)' doesn't exist
I dont know why I got "indirect fixture”. Any idea?
I am using python 3.7 and windows 10 64 bits.TL;DR - The problem is with the line @pytest.mark.parametrize("entrada","esperado",[ ... ]) It should be written as a comma-separated string: @pytest.mark.parametrize("entrada, esperado",[ ... ]) You got the indirect fixture because pytest couldn't unpack the given argvalues since it got a wrong argnames parameter. You need to make sure all parameters are written as one string. Please see the documentation: The builtin pytest.mark.parametrize decorator enables parametrization of arguments for a test function. Parameters: 1. argnames – a comma-separated string denoting one or more argument names, or a list/tuple of argument strings. 2. argvalues – The list of argvalues determines how often a test is invoked with different argument values. Meaning, you should write the arguments you want to parametrize as a single string and separate them using a comma. Therefore, your test should look like this: @pytest.mark.parametrize("n, expected", [ (0, 1), (1, 1), (2, 2), (3, 6), (4, 24), (5, 120) ]) def test_factorial(n, expected): assert factorial(n) == expected
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