Dynamic fixture selection in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a pytest fixture named 'data' that returns a list.

PyTest

import pytest

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

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

A[1, 2, 3]

B(1, 2, 3)

C{1, 2, 3}

D'123'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a tuple or set instead of a list.

Returning a string instead of a list.

The fixture should return a list, so the correct answer is a list literal [1, 2, 3].

2fill in blank

medium

Complete the code to select a fixture dynamically based on the 'request' parameter.

PyTest

import pytest

@pytest.fixture
def dynamic_data(request):
    fixture_name = 'data_' + request.param
    return request.getfixturevalue([1])

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

A'fixture_name'

Bfixture_name

Crequest.param

D'data_'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the string 'fixture_name' instead of the variable.

Passing request.param directly instead of the full fixture name.

The variable fixture_name holds the name of the fixture to get, so it should be passed to getfixturevalue.

3fill in blank

hard

Fix the error in the test function to use the dynamic fixture with parameterization.

PyTest

@pytest.mark.parametrize('dynamic_data', ['one', 'two'], indirect=True)
def test_dynamic(dynamic_data):
    assert isinstance(dynamic_data, list) and len(dynamic_data) == [1]

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

A1

B2

C3

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming the length is 2 or 1.

Using zero which would always fail.

The fixtures 'data_one' and 'data_two' return lists of length 3, so the assertion checks for length 3.

4fill in blank

hard

Fill both blanks to define two fixtures 'data_one' and 'data_two' returning different lists.

PyTest

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

@pytest.fixture
def data_two():
    return [2]

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

A[1, 2, 3]

B[4, 5]

C[7, 8, 9]

D[10]

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same list for both fixtures.

Choosing lists with different lengths causing test failures.

The fixtures should return different lists. 'data_one' returns [1, 2, 3] and 'data_two' returns [7, 8, 9].

5fill in blank

hard

Fill all three blanks to create a test that uses dynamic fixture selection and asserts the first element.

PyTest

@pytest.mark.parametrize('dynamic_data', ['one', 'two'], indirect=True)
def test_first_element(dynamic_data):
    assert dynamic_data[[1]] == [2] and len(dynamic_data) == [3]

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

A0

B1

C3

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using index 1 instead of 0 for the first element.

Incorrect length value causing assertion failure.

The first element index is 0, the first element of 'data_one' is 1, and the length of the list is 3.