Pruthviraj Gojare — R23-T042: Property tests for conversions/octal_to_hexadecimal.py #43

Student: Pruthviraj Gojare

Task: R23-T042 · 2 of 10
Repository: https://github.com/S-AI-Projects/TheAlgorithms-Python
Assigned working branch: student/e26b07f0834

Goal

Use Hypothesis to test the code against a trusted reference or a mathematical property over thousands of random inputs. Reference: hex(int(s, 8)). Properties: matches the reference for every valid octal string; invalid strings raise.

Steps

1. Write test_octal_to_hexadecimal_properties.py in work/R23-T042/ using hypothesis strategies.
2. Implement the property/reference checks described in the goal.
3. Run it; if Hypothesis finds a failing input, reduce it to a minimal example and either fix the code (with a doctest) or document the limitation.
4. Explain each property in PROPERTIES.md.
5. Make the code change in the repository: conversions/octal_to_hexadecimal.py: doctests for the inputs the property test exercised (leading zeros, '0o' prefix handling, invalid digits). Re-run the automated check and the repo's own tests afterwards.
6. Prepare the PR: on branch R23-T042, commit the code change plus your work/R23-T042/ evidence, put your findings in the PR description and open the PR against the org fork. For a later upstream PR, create a second branch containing only the code change (no work/ folder).

Done when

☐ Property test: octal_to_hex(s) matches hex(int(s, 8)) (in the function's documented output format) for every valid octal string; invalid strings raise.
☐ conversions/octal_to_hexadecimal.py gains doctests for leading zeros, the '0o' prefix and invalid digits (8, 9).
☐ Existing 5 doctests and 3 raise paths unchanged.

Submission checklist

• Complete this task and its checks.
• Add the required evidence and link your pull request here.
• Select this S-AI-Projects fork as the PR base repository.
• Request instructor review.

Keep this PR focused on this task. Do not submit assignment PRs to the upstream repository.