test: disputes err stability

[ositaemmanuel653-netizen]

Pull Request Description

📋 Basic Information

Type of Change

Please select the type of change this PR introduces:

• 🧪 Test addition/update
• 📚 Documentation update

Related Issues

Closes #942

Priority Level

• 🟢 Medium (moderate impact)

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📝 Detailed Description

What does this PR do?

This PR adds a contract error stability test for the disputes contract to ensure that all client-facing ContractError variants retain their assigned numeric error codes. The new test is located at:

• contracts/disputes/tests/err_stab.rs

Additionally, documentation has been updated to note that dispute error codes are considered part of the public API and should remain stable across future releases.

Why is this change needed?

External clients, SDKs, frontends, and integrations depend on stable numeric contract error codes. Accidentally changing the ordering or values of ContractError variants can introduce breaking changes without modifying the public interface.

This stability test acts as a regression safeguard by detecting unintended changes to error code assignments during development.

How was this tested?

• Added a dedicated error stability test for the disputes contract.
• Executed the repository's test suite to verify compatibility.
• Confirmed that existing functionality remains unaffected.

Alternative Solutions Considered

• Manually reviewing error enums during code reviews. This approach is error-prone and does not prevent accidental regressions.
• Snapshot testing the entire contract. A focused stability test provides clearer intent, is easier to maintain, and specifically protects the public error interface.

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🏗️ Smart Contract Specific

Contract Changes

• Error handling improved

Oracle Integration

• Pyth oracle integration affected
• Reflector oracle integration affected
• Oracle configuration changes
• Price feed handling modified
• Oracle fallback mechanisms
• Price validation logic

Market Resolution Logic

• Hybrid resolution algorithm changed
• Dispute mechanism modified
• Fee structure updated
• Voting mechanism changes
• Community weight calculation
• Oracle weight calculation

Security Considerations

• Input validation

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🧪 Testing

Test Coverage

• Unit tests added/updated
• All tests passing locally
• Edge cases covered

Test Results

cargo test

# Sample Output
running XXX tests
test contracts::disputes::tests::err_stab ... ok
...
test result: ok. XXX passed; 0 failed

Manual Testing Steps

1. Run cargo test.
2. Verify contracts/disputes/tests/err_stab.rs executes successfully.
3. Modify a ContractError discriminant locally and confirm the stability test fails as expected.

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📚 Documentation

Documentation Updates

• Code comments added/updated

Breaking Changes

Breaking Changes:

• None.

Migration Guide:

Not applicable.

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🔍 Code Quality

Code Review Checklist

• Code follows Rust/Soroban best practices
• Self-review completed
• No unnecessary code duplication
• Error handling is appropriate
• Security considerations addressed
• Performance implications considered
• Code is readable and well-commented
• Variable names are descriptive
• Functions are focused and small

Performance Impact

• Gas Usage: None (test-only change).
• Storage Impact: None.
• Computational Complexity: No runtime impact.

Security Review

• No obvious security vulnerabilities
• Input validation in place

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🚀 Deployment & Integration

Deployment Notes

• Network: N/A
• Contract Address: N/A
• Migration Required: No
• Special Instructions: None.

Integration Points

• Backward compatibility maintained

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📊 Impact Assessment

User Impact

• End Users: No functional changes.
• Developers: Prevents accidental breaking changes to public contract error codes.
• Admins: No impact.

Business Impact

• Revenue: No direct impact.
• User Experience: Improves reliability for SDKs and client integrations.
• Technical Debt: Reduced by introducing automated regression protection.

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✅ Final Checklist

Pre-Submission

• Code follows Rust/Soroban best practices
• All CI checks passing
• No breaking changes
• Ready for review
• PR description is complete and accurate
• All required sections filled out
• Test results included
• Documentation updated

Review Readiness

• Self-review completed
• Code is clean and well-formatted
• Commit messages are clear and descriptive
• Branch is up to date with main
• No merge conflicts

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📸 Screenshots (if applicable)

Not applicable.

🔗 Additional Resources

• Design Document: N/A
• Technical Spec: Issue Add ContractError stability test for disputes (v7) #942
• Related Discussion: GrantFox FWC26 (Stellar Wave)
• External Documentation: N/A

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💬 Notes for Reviewers

Please pay special attention to:

• Validation that all public ContractError numeric values remain stable.
• Coverage of regression scenarios where enum ordering or discriminants change.
• Consistency with existing error stability tests across other contracts.

Questions for reviewers:

• Does the stability test sufficiently cover all public-facing dispute errors?
• Are there any additional edge cases that should be protected against?

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Thank you for your contribution to Predictify! 🚀

[drips-wave]

@ositaemmanuel653-netizen Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

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