[Solved] You wrote this conftest.py fixture: import pytest @pytest.fixture def data(): return [1, 2, 3] But your test fails with an error: fixture 'data' not found. What is the likely cause? | PyTest

PyTest - Test Organization

You wrote this conftest.py fixture:

import pytest

@pytest.fixture
def data():
    return [1, 2, 3]

But your test fails with an error: fixture 'data' not found. What is the likely cause?

AThe test function does not accept <code>data</code> as a parameter

BThe fixture function is missing the <code>return</code> statement

CThe fixture is defined with a wrong decorator like <code>@pytest.test</code>

DThe <code>conftest.py</code> file is not in the same or parent directory of the test file

Step-by-Step Solution

Solution:

Step 1: Understand pytest fixture discovery
Pytest finds conftest.py files in the test directory or its parents. If conftest.py is elsewhere, fixtures won't be found.
Step 2: Analyze other options
Options A, B, and D would cause different errors or test failures, but not 'fixture not found'.
Final Answer:
The conftest.py file is not in the same or parent directory of the test file -> Option D
Quick Check:
Fixture not found means wrong file location = C [OK]

Quick Trick: Check conftest.py location relative to tests [OK]

Common Mistakes:

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