Why advanced patterns handle real-world complexity in PyTest - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to assert that the function returns True.

PyTest

def test_function():
    result = my_function()
    assert result [1] True

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

A!=

B==

C=

Dis not

Attempts:

3 left

💡 Hint

Common Mistakes

Using single = instead of == in assert

Using != instead of ==

The assertion must check if result is equal to True using ==.

2fill in blank

medium

Complete the code to skip the test when the condition is True.

PyTest

@pytest.mark.skipif([1], reason="Not supported")
def test_feature():
    assert feature()

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

ATrue

B0

CNone

DFalse

Attempts:

3 left

💡 Hint

Common Mistakes

Using False so test never skips

Using None which is not a boolean

The test is skipped when the condition is True.

3fill in blank

hard

Fix the error in the fixture definition to return a value.

PyTest

@pytest.fixture
def sample_data():
    data = {'key': 'value'}
    [1] data

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

Apass

Byield

Cprint

Dreturn

Attempts:

3 left

💡 Hint

Common Mistakes

Using print instead of return

Using pass which returns None

Fixtures must return data to be used in tests. Use return to provide the data.

4fill in blank

hard

Fill both blanks to parametrize the test with two values.

PyTest

@pytest.mark.parametrize("input,expected", [
    ([1], [2]),
])
def test_double(input, expected):
    assert double(input) == expected

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

A2

B4

C3

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping input and expected values

Using wrong numbers that don't match doubling

The test checks if doubling 2 gives 4, so input is 2 and expected is 4.

5fill in blank

hard

Fill all three blanks to create a test that checks if a list contains an item.

PyTest

def test_contains():
    items = [[1], [2], [3]]
    assert 3 in items

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

A1

B3

C5

D7

Attempts:

3 left

💡 Hint

Common Mistakes

Not including 3 in the list

Using non-integer values

The list contains 1, 3, and 5. The test asserts that 3 is in the list.