@pytest.mark.skipif with condition - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does @pytest.mark.skipif do in a test?

It skips the test if the given condition is true. This helps avoid running tests when certain requirements are not met.

beginner

How do you write a condition to skip a test only on Windows using @pytest.mark.skipif?

Use sys.platform == 'win32' as the condition. Example: @pytest.mark.skipif(sys.platform == 'win32', reason='Skip on Windows')

beginner

Why should you always provide a reason argument in @pytest.mark.skipif?

The reason explains why the test is skipped. It helps others understand the skip and improves test reports.

intermediate

Can @pytest.mark.skipif condition use variables or expressions?

Yes, the condition can be any Python expression that evaluates to True or False, including variables, function calls, or complex logic.

beginner

Example: What happens if you write @pytest.mark.skipif(True, reason='Always skip') above a test?

The test will always be skipped because the condition is always True.

What does @pytest.mark.skipif(condition, reason='...') do?

A Skips the test if the condition is True

B Runs the test only if the condition is True

C Always runs the test

D Marks the test as failed if the condition is True

The decorator skips the test when the condition evaluates to True.

Which of these is a valid condition to skip a test on Python version less than 3.8?

A sys.version == '3.8'

B sys.version_info > (3, 8)

C sys.version_info < (3, 8)

D sys.version_info == 3.8

sys.version_info is a tuple; comparing it to (3, 8) checks the Python version.

What happens if you omit the reason argument in @pytest.mark.skipif?

A Test will not be skipped

B Test will be skipped but no explanation shown

C Pytest will raise an error

D Test will always run

The test is skipped but the report lacks the skip reason, which is not recommended.

Can @pytest.mark.skipif be used to skip tests based on environment variables?

A Yes, but only with command line flags

B No, it only works with Python version

C No, it only works with OS platform

D Yes, by checking <code>os.environ</code> in the condition

You can use any Python expression, including environment variable checks.

If a test is marked with @pytest.mark.skipif(False, reason='...'), what happens?

A Test runs normally

B Test is skipped

C Test fails

D Test is marked as expected failure

The condition is False, so the test runs as usual.

Explain how to use @pytest.mark.skipif to skip tests conditionally. Include why the reason argument is important.

Think about when you want to avoid running a test and how to tell others why.

Describe a real-life scenario where @pytest.mark.skipif would be useful in testing.

Consider differences in environments or missing dependencies.