monkeypatch fixture in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to patch the function using monkeypatch.

PyTest

def test_example(monkeypatch):
    def fake_return():
        return 42
    monkeypatch.[1]('module.function', fake_return)
    assert module.function() == 42

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

Apatch

Bsetattr

Creplace

Dmock

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'patch' which is from unittest.mock, not monkeypatch.

Using 'replace' which is not a valid monkeypatch method.

The monkeypatch.setattr method replaces an attribute or function for the test.

2fill in blank

medium

Complete the code to patch an environment variable using monkeypatch.

PyTest

def test_env(monkeypatch):
    monkeypatch.[1]('ENV_VAR', 'test_value')
    assert os.getenv('ENV_VAR') == 'test_value'

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

Asetenv

Bsetattr

Cpatchenv

Dmockenv

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'setattr' which patches attributes, not environment variables.

Using 'patchenv' which does not exist.

monkeypatch.setenv sets an environment variable temporarily for the test.

3fill in blank

hard

Fix the error in patching a dictionary key using monkeypatch.

PyTest

def test_dict(monkeypatch):
    config = {'key': 'original'}
    monkeypatch.[1](config, 'key', 'patched')
    assert config['key'] == 'patched'

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

Asetenv

Bsetattr

Cpatchitem

Dsetitem

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'setattr' which works on object attributes, not dict keys.

Using 'setenv' which is for environment variables.

monkeypatch.setitem patches dictionary keys temporarily.

4fill in blank

hard

Fill both blanks to patch a function and check its call count.

PyTest

def test_call_count(monkeypatch):
    calls = {'count': 0}
    def fake_func():
        calls['count'] += 1
    monkeypatch.[1]('module.func', fake_func)
    module.func()
    assert calls['count'] [2] 1

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

Asetattr

B==

C>=

Dsetitem

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'setitem' to patch a function (wrong for attributes).

Using '>=' instead of '==' for exact call count.

Use setattr to patch the function and == to assert exact call count.

5fill in blank

hard

Fill all three blanks to patch environment, attribute, and dictionary key correctly.

PyTest

def test_all(monkeypatch):
    monkeypatch.[1]('ENV', 'value')
    class Obj:
        attr = 5
    obj = Obj()
    monkeypatch.[2](obj, 'attr', 10)
    data = {'key': 'old'}
    monkeypatch.[3](data, 'key', 'new')
    assert os.getenv('ENV') == 'value'
    assert obj.attr == 10
    assert data['key'] == 'new'

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

Asetenv

Bsetattr

Csetitem

Dpatch

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'patch' which is not a monkeypatch method.

Mixing up 'setattr' and 'setitem' for objects and dicts.

Use setenv for environment variables, setattr for object attributes, and setitem for dictionary keys.