@pytest.mark.skip with reason - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of a skipped test with reason

What will be the output when running this pytest code snippet?

PyTest

import pytest

@pytest.mark.skip(reason="Not implemented yet")
def test_feature():
    assert 1 == 1

if __name__ == "__main__":
    import pytest
    pytest.main([__file__])

A The test is skipped with the message 'Not implemented yet' shown in the test report.

B The test runs and passes because the assertion is true.

C The test fails with an AssertionError.

D The test raises a SyntaxError due to incorrect decorator usage.

💡 Hint

Look at what @pytest.mark.skip does and how the reason parameter affects the test report.

The @pytest.mark.skip decorator prevents the test from running and marks it as skipped. The reason string is shown in the test report to explain why the test was skipped.

❓ assertion

intermediate

Assertion behavior in skipped tests

If a test is decorated with @pytest.mark.skip(reason="Skip this test"), what happens to assertions inside that test?

PyTest

import pytest

@pytest.mark.skip(reason="Skip this test")
def test_example():
    assert False

if __name__ == "__main__":
    import pytest
    pytest.main([__file__])

A Assertions are not executed because the test is skipped.

B Assertions run and cause the test to fail.

C Assertions run but are ignored, so the test passes.

D Assertions cause a runtime error because the test is skipped.

💡 Hint

Think about whether skipped tests run their code or not.

When a test is skipped, pytest does not execute the test function body, so assertions inside are not run.

🔧 Debug

advanced

Skip decorator with positional reason

What will happen when running this pytest code?

PyTest

import pytest

@pytest.mark.skip("Missing reason keyword argument")
def test_bug():
    assert True

if __name__ == "__main__":
    import pytest
    pytest.main([__file__])

A SyntaxError due to incorrect decorator syntax.

B TypeError because reason argument is missing the keyword 'reason='.

C The test is skipped with the message 'Missing reason keyword argument'.

D The test runs and passes normally.

💡 Hint

Check how the skip decorator handles positional arguments for the reason.

@pytest.mark.skip accepts the reason as a positional or keyword argument. The positional string is used as the skip reason, and the test is skipped.

🧠 Conceptual

advanced

Difference between @pytest.mark.skip and @pytest.mark.skipif with reason

Which statement correctly describes the difference between @pytest.mark.skip(reason=...) and @pytest.mark.skipif(condition, reason=...) decorators?

A @pytest.mark.skip skips only if the condition is True, while @pytest.mark.skipif always skips.

B @pytest.mark.skip always skips the test unconditionally, while @pytest.mark.skipif skips only if the condition is True.

C Both decorators skip tests only if the condition is False.

D Both decorators behave identically and always skip the test.

💡 Hint

Think about when each decorator causes skipping.

@pytest.mark.skip always skips the test regardless of any condition. @pytest.mark.skipif skips the test only if the given condition evaluates to True.

❓ framework

expert

Using @pytest.mark.skip with fixtures and reason

Given this pytest code, what will be the test outcome and output reason?

PyTest

import pytest

@pytest.fixture
def data():
    return 42

@pytest.mark.skip(reason="Fixture not ready")
def test_data(data):
    assert data == 42

if __name__ == "__main__":
    import pytest
    pytest.main([__file__])

A The test raises an error due to fixture usage in a skipped test.

B The test runs and passes because the fixture returns 42.

C The test fails because the fixture is not available.

D The test is skipped with the reason 'Fixture not ready' shown; fixture is not executed.

💡 Hint

Consider if fixtures run when a test is skipped.

When a test is skipped using @pytest.mark.skip, the test function and its fixtures are not executed. The skip reason is shown in the test report.