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Testing Log Handler Filtering Functionality in Apache Airflow

This test suite focuses on validating log handler functionality in Apache Airflow, specifically testing the filtering of non-pytest handlers. The tests ensure proper log handler management and filtering mechanisms essential for Airflow’s logging system.

Test Coverage Overview

The test coverage focuses on the non_pytest_handlers function that filters logging handlers.

Key areas tested include:

Filtering of handlers based on module names
Proper handling of pytest-related handlers
Verification of handler list manipulation

Implementation Analysis

The testing approach uses a straightforward unit test methodology to verify handler filtering logic. The implementation leverages Python’s list comprehension and module inspection capabilities to identify and filter pytest-related handlers from the logging configuration.

Technical Details

Testing tools and configuration:

Python’s built-in testing utilities
Module inspection for handler filtering
List comprehension for handler processing
Standard Python logging handler manipulation

Best Practices Demonstrated

The test demonstrates several quality practices in Python testing:

Clear function naming and purpose
Efficient list processing
Module-based filtering logic
Simple and maintainable test structure

apache/airflow

tests_common/test_utils/log_handlers.py

            
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations


def non_pytest_handlers(handlers):
    return [h for h in handlers if "pytest" not in h.__module__]