Tests for formato_json.py module

[ABHISHEKSONI121]

Test Suite Summary for formato_json Module

Key Achievements

• 14 tests passing
• Comprehensive testing for leer and escribir functions
• Covers JSON file reading, writing, and data manipulation
• Includes edge cases and exception handling

Manual test evidence

Checklist

• Classes, Variables, function and methods logic ok
• Comments written explaining what the code does
• All python code is PEP8 compliant (run black .)
• No lint issues (run flake8)
• Test coverage with pytest implemented
• Reviewers assigned (at least 1 mentor)

🔗 Related Issues

Closes #164: Improve test coverage for formato_json module

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💡 This test suite provides excellent coverage for the formato_json module. It demonstrates the reliability and robustness of the JSON processing functionality in PyAfipWs.

[NicolasSandoval]

@ABHISHEKSONI121 Could you write the test with pytest? You could use the pytest tmp_path fixture for this.

[ABHISHEKSONI121]

sorry for that
I have updated the tests and also ran black and flake8 before committing as you asked