8. Robust Exception Handling & Custom Test Failures

Exception Handling Pattern for Automation

class AutomationTimeoutError(Exception):
    # Custom exception for test framework timeouts
    pass
def execute_with_cleanup(action_fn, cleanup_fn):
    try:
        action_fn()
    except Exception as e:
        print(f"Action failed: {e}")
        raise AutomationTimeoutError(f"Step failed: {e}") from e
    finally:
        cleanup_fn()

Task

  • Implement safe_int_conversion(val: str, default: int = 0) -> int:
  • 1. In a try block, return int(val).
  • 2. Catch ValueError and return default.
💡Common doubts
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Lesson 8 of 37
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