caplog for log messages in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to capture log messages using caplog.

PyTest

def test_logging(caplog):
    with caplog.at_level([1]):
        logger = logging.getLogger('test')
        logger.info('Test message')
    assert 'Test message' in caplog.text

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

Alogging.INFO

Blogging.DEBUG

Clogging.ERROR

Dlogging.WARNING

Attempts:

3 left

💡 Hint

Common Mistakes

Using a logging level higher than INFO will not capture the info message.

Not using caplog.at_level context manager.

The caplog.at_level() context manager sets the logging level to capture messages. logging.INFO captures info level logs.

2fill in blank

medium

Complete the code to check the first captured log message's level name.

PyTest

def test_log_level_name(caplog):
    logger = logging.getLogger('test')
    logger.error('Error occurred')
    assert caplog.records[0].[1] == 'ERROR'

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

Alevelname

Blevelno

Cmsg

Dname

Attempts:

3 left

💡 Hint

Common Mistakes

Using levelno which is a number, not a string.

Using msg which is the message text.

The levelname attribute of a log record gives the level as a string like 'ERROR'.

3fill in blank

hard

Fix the error in the code to capture debug messages with caplog.

PyTest

def test_debug_log(caplog):
    with caplog.at_level([1]):
        logger = logging.getLogger('test')
        logger.debug('Debug info')
    assert 'Debug info' in caplog.text

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

Alogging.INFO

Blogging.ERROR

Clogging.DEBUG

Dlogging.CRITICAL

Attempts:

3 left

💡 Hint

Common Mistakes

Setting the level to INFO or higher will miss debug messages.

Not using caplog.at_level context manager.

Debug messages require the logging level to be set to logging.DEBUG or lower to be captured.

4fill in blank

hard

Fill both blanks to filter captured logs by level and check message content.

PyTest

def test_filter_logs(caplog):
    logger = logging.getLogger('test')
    logger.warning('Warning message')
    logger.error('Error message')
    filtered = [record for record in caplog.records if record.[1] == [2]]
    assert any('Warning' in record.msg for record in filtered)

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

Alevelname

Blevelno

C'WARNING'

Dlogging.WARNING

Attempts:

3 left

💡 Hint

Common Mistakes

Using levelno but comparing to a string.

Comparing levelname to a numeric constant.

To filter by level name, use levelname and compare to the string 'WARNING'.

5fill in blank

hard

Fill all three blanks to capture logs at error level, check message count, and verify message text.

PyTest

def test_error_logs_count(caplog):
    with caplog.at_level([1]):
        logger = logging.getLogger('test')
        logger.error('First error')
        logger.error('Second error')
    errors = [record for record in caplog.records if record.[2] == [3]]
    assert len(errors) == 2
    assert errors[0].msg == 'First error'

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

Alogging.ERROR

Blevelname

C'ERROR'

Dlevelno

Attempts:

3 left

💡 Hint

Common Mistakes

Using numeric level levelno but comparing to string.

Setting capture level too high or too low.

Set capture level to logging.ERROR. Filter records by levelname equal to 'ERROR'.