Test file and function naming conventions in PyTest - Cheat Sheet & Quick Revision

Recall & Review

beginner

Why should test files in pytest start with test_?

Pytest automatically discovers test files that start with test_ or end with _test.py. This naming helps pytest find and run your tests without extra configuration.

beginner

What is the recommended naming pattern for test functions in pytest?

Test functions should start with test_. For example, def test_addition():. This allows pytest to recognize and run them as tests.

beginner

Can you name a test file calculator.py and expect pytest to run tests inside it automatically?

No. Pytest will not discover tests in files without the test_ prefix or _test.py suffix. The file should be named like test_calculator.py.

beginner

What happens if a test function does not start with test_ in pytest?

Pytest will ignore the function because it does not match the naming pattern for test functions. Only functions starting with test_ are run as tests.

beginner

Why is consistent naming important in test files and functions?

Consistent naming helps pytest find tests automatically, keeps your project organized, and makes it easier for others to understand and run your tests.

Which of these is a valid pytest test file name?

A test_math.py

B math_tested.py

C math.py

D testing_math.py

Pytest recognizes files starting with 'test_' or ending with '_test.py'. Only 'test_math.py' fits this pattern.

How should you name a test function for pytest to recognize it?

A test_addition()

B addition_test()

C check_addition()

D AddTest()

Test functions must start with 'test_' for pytest to discover and run them.

If a test file is named calculator.py, what will pytest do?

A Run all tests inside it

B Ignore it during test discovery

C Run tests only if specified manually

D Rename it automatically

Pytest ignores files without 'test_' prefix or '_test.py' suffix during automatic test discovery.

What prefix should test functions have in pytest?

A check_

B verify_

C assert_

D test_

The 'test_' prefix is required for pytest to recognize functions as tests.

Why is it important to follow naming conventions in pytest?

A To reduce code size

B To make tests run faster

C To allow pytest to find and run tests automatically

D To avoid writing assertions

Naming conventions help pytest discover tests without extra setup.

Explain the naming conventions for test files and test functions in pytest and why they matter.

Think about how pytest finds tests without manual configuration.

What happens if you name a test function without the 'test_' prefix in pytest?

Consider how pytest identifies test functions.