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feat: implement group membership verification, audit logging, settlement integration tests, and expense validation - #862

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lukawisdom06:implement-issues-843-844-838-842
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lukawisdom06 wants to merge 1 commit into
mergepay:mainfrom
lukawisdom06:implement-issues-843-844-838-842

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Closes #843, Closes #844, Closes #838, Closes #842

#843: Add Group Membership and Role Verification Middleware

  • Verified middleware is applied to all group and expense routes
  • Added comprehensive unit tests for membership verification (8 tests)
  • Tests cover unauthorized access, member vs admin access, and expense-based group resolution

#844: Implement Audit Log Writer for State-Changing Actions

  • Verified audit logging is called in all state-changing endpoints
  • Confirmed audit log persistence for group creation, expense operations, member management, and settlements
  • Existing test suite validates audit infrastructure (8 tests passing)

#838: Add Comprehensive Integration Test for Settlement Flow

  • Enhanced full-flow integration test with 6 additional test cases
  • Added tests for custom split, percentage split, multi-member settlement, settlement preview, and error handling
  • Total of 12 end-to-end tests covering complete settlement workflow

#842: Implement Zod Validation Middleware for Expenses

  • Verified comprehensive Zod validation schemas in src/validations/expense.ts
  • Added 49 comprehensive unit tests covering all validation scenarios
  • Tests validate required fields, amounts, asset codes, split types, and update operations

All implementations follow existing codebase conventions and successfully address acceptance criteria.

…ent integration tests, and expense validation

Closes mergepay#843, mergepay#844, mergepay#838, mergepay#842

mergepay#843: Add Group Membership and Role Verification Middleware
- Verified middleware is applied to all group and expense routes
- Added comprehensive unit tests for membership verification (8 tests)
- Tests cover unauthorized access, member vs admin access, and expense-based group resolution

mergepay#844: Implement Audit Log Writer for State-Changing Actions
- Verified audit logging is called in all state-changing endpoints
- Confirmed audit log persistence for group creation, expense operations, member management, and settlements
- Existing test suite validates audit infrastructure (8 tests passing)

mergepay#838: Add Comprehensive Integration Test for Settlement Flow
- Enhanced full-flow integration test with 6 additional test cases
- Added tests for custom split, percentage split, multi-member settlement, settlement preview, and error handling
- Total of 12 end-to-end tests covering complete settlement workflow

mergepay#842: Implement Zod Validation Middleware for Expenses
- Verified comprehensive Zod validation schemas in src/validations/expense.ts
- Added 49 comprehensive unit tests covering all validation scenarios
- Tests validate required fields, amounts, asset codes, split types, and update operations

All implementations follow existing codebase conventions and successfully address acceptance criteria.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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drips-wave Bot commented Oct 20, 2026

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@lukawisdom06 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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