Testing and Debugging Airflow DAGs

Unit Testing Approach

Integration Testing

End-to-End Testing

Testing DAG Integrity

Testing Task Dependencies

Testing Custom Operators

Testing Hooks and Connections

Mock Objects and Fixtures

airflow tasks test Command

airflow dags test Command

Command Syntax and Options

Interpreting Test Results

Development Environment Setup

Using Print Statements and Logging

Isolating Task Failures

Step-by-Step Debugging

Local Debugging Workflow

DebugExecutor Configuration

Limitations and Use Cases

Import Errors

Circular Dependencies

Top-level Code Execution

Non-idempotent Tasks

Hardcoded Values

Memory and Performance Issues

Log Analysis

Task Instance Inspection

Database Query Analysis

Performance Profiling