Why advanced fixtures handle complex scenarios in PyTest - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a simple pytest fixture.

PyTest

import pytest

@pytest.fixture
def [1]():
    return 42

Drag options to blanks, or click blank then click option'

Afixture_func

Bsimple_fixture

Csetup

Dtest_func

Attempts:

3 left

💡 Hint

Common Mistakes

Using names that start with 'test_' which pytest treats as test functions.

Using invalid Python names or reserved keywords.

The fixture name must be a valid Python function name. Here, simple_fixture is a clear and valid name.

2fill in blank

medium

Complete the code to use a fixture in a test function.

PyTest

def test_answer([1]):
    assert [1] == 42

Drag options to blanks, or click blank then click option'

Asimple_fixture

Bsetup

Cfixture_func

Danswer

Attempts:

3 left

💡 Hint

Common Mistakes

Using a parameter name different from the fixture name.

Forgetting to include the fixture as a parameter.

The test function must accept the fixture name as a parameter to use it. Here, simple_fixture matches the fixture defined earlier.

3fill in blank

hard

Fix the error in the fixture that uses yield for setup and teardown.

PyTest

import pytest

@pytest.fixture
def resource():
    print('Setup')
    [1] 10
    print('Teardown')

Drag options to blanks, or click blank then click option'

Areturn

Bbreak

Cyield

Dpass

Attempts:

3 left

💡 Hint

Common Mistakes

Using return instead of yield in fixtures needing teardown.

Placing teardown code before yield.

Using yield in a fixture allows setup before the yield and teardown after. return would end the function immediately without teardown.

4fill in blank

hard

Fill both blanks to create a fixture that depends on another fixture and modifies its value.

PyTest

@pytest.fixture
def modified_resource([1]):
    value = [2] + 5
    return value

Drag options to blanks, or click blank then click option'

Aresource

Csimple_fixture

Dsetup

Attempts:

3 left

💡 Hint

Common Mistakes

Using a fixture name that does not exist.

Not passing the dependent fixture as a parameter.

The fixture modified_resource depends on the resource fixture. It receives resource as a parameter and adds 5 to it.

5fill in blank

hard

Fill all three blanks to create a parametrized fixture that runs tests with multiple inputs.

PyTest

@pytest.fixture(params=[1, 2, 3])
def param_fixture([1]):
    return [2]

def test_param([3]):
    assert [3] > 0

Drag options to blanks, or click blank then click option'

Arequest

Brequest.param

Cparam_fixture

Dparams

Attempts:

3 left

💡 Hint

Common Mistakes

Using params as a parameter name in the fixture function.

Not using request.param to get the current parameter.

Not passing the fixture to the test function.

The fixture uses request to access the current parameter with request.param. The test function receives the fixture param_fixture as a parameter.