Description

This PR improves the CheckoutApiException class and its associated tests to ensure more robust error handling for scenarios where API responses are partial or do not contain the expected keys (error_codes or error_type).

Changes Made

• Enhanced error handling in CheckoutApiException:

  • Replaced direct dictionary access (payload['key']) with payload.get('key') to prevent KeyError in cases of incomplete JSON responses.
  • Ensured error_details and error_type attributes default to None if the corresponding keys are not present in the response payload.

• Updated unit tests:

  • Covered scenarios where API responses:
    • Do not include keys like error_codes or error_type.
    • Are valid but contain no relevant data.
    • Return empty text or invalid JSON.

• Improved robustness:

  • Optimized the implementation to handle partial responses gracefully, ensuring a more consistent experience for SDK users.

Impact

• Improves the stability and robustness of the SDK in error-handling scenarios.
• Increases unit test coverage for the CheckoutApiException class.
• Simplifies error diagnostics by explicitly handling edge cases.

Additional Notes

• This change does not introduce any breaking changes and remains fully backward compatible with existing implementations.