Test independence in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to mark the test as independent using pytest.

PyTest

import pytest

@pytest.[1]
def test_example():
    assert 1 + 1 == 2

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

Amark.dependency

Bmark.parametrize

Cmark.skip

Dmark.independent

Attempts:

3 left

💡 Hint

Common Mistakes

Using @pytest.mark.dependency instead of @pytest.mark.independent

Confusing skip or parametrize markers with independence

Using @pytest.mark.independent marks the test as independent, ensuring it does not rely on other tests.

2fill in blank

medium

Complete the code to ensure each test runs with a fresh setup using fixtures.

PyTest

import pytest

@pytest.fixture(autouse=True, scope='function')
def setup():
    # Setup code here
    yield
    # Teardown code here

def test_one():
    assert True

def test_two():
    assert True

# Each test uses [1] fixture to stay independent.

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

Afunction

Bsession

Cmodule

Dclass

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'session' scope which shares setup across all tests

Using 'module' or 'class' scope which groups tests

Using a 'function' scoped fixture runs setup and teardown for each test function, keeping tests independent.

3fill in blank

hard

Fix the error in the test that shares state causing dependency.

PyTest

shared_list = []

def test_append():
    shared_list.append(1)
    assert len(shared_list) == [1]

def test_clear():
    shared_list.clear()
    assert len(shared_list) == 0

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

ANone

B0

C1

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming the list is empty in test_append

Not resetting shared state between tests

The first test appends one item, so the length should be 1. Sharing state causes dependency, so tests should avoid this.

4fill in blank

hard

Fill both blanks to create independent tests using fixtures.

PyTest

import pytest

@pytest.fixture

def [1]():
    return []

def test_add_item([2]):
    [2].append('item')
    assert len([2]) == 1

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

Aempty_list

Bshared_list

Ctemp_list

Ddata

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for fixture and argument

Using a shared list causing test dependency

Using the fixture 'empty_list' as argument ensures each test gets a fresh list, keeping tests independent.

5fill in blank

hard

Fill all three blanks to write independent tests with setup and teardown.

PyTest

import pytest

@pytest.fixture

def [1]():
    resource = {'count': 0}
    yield resource
    resource['count'] = 0

def test_increment([2]):
    [2]['count'] += 1
    assert [2]['count'] == 1

def test_reset([3]):
    assert [3]['count'] == 0

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

Aresource_fixture

Bresource

Dres

Attempts:

3 left

💡 Hint

Common Mistakes

Using inconsistent names causing errors

Not resetting shared state in fixture teardown

Using the fixture 'resource' ensures each test gets a fresh resource dict, keeping tests independent.