Lending Protocol - QA Test Report
Source: Dev.to
Test Report Date: 01/28/2026
Prepared By: QA Team – mounikakun, sgramkumar
Environment: GitLab CI Runner (Ubuntu 22.04)
Overview
This report presents the results of QA testing performed on Lending Protocol across the xrpld network.
1. Feature
Feature Name: Lending Protocol
Description:
This proposal introduces fundamental primitives for an XRP Ledger‑native Lending Protocol. The protocol offers straightforward on‑chain uncollateralized fixed‑term loans, utilizing pooled funds with pre‑set terms for interest‑accruing loans. The design relies on off‑chain underwriting and risk management to assess borrower creditworthiness. The First‑Loss Capital protection scheme absorbs some losses in case of a loan default.
Specification Reference:
2. Test Scope
This testing phase represents one of our most comprehensive quality‑assurance efforts, reflecting the inherent complexity and critical nature of the Lending Protocol. Unlike standard updates, this feature required an exhaustive deep dive into cross‑functional dependencies and multi‑layered ledger entries.
| Area | Details |
|---|---|
| Amortization & Interest Calculations | Exhaustive verification of standard amortization formulas, validating precision across varying interest rates and payment schedules. Tested “Re‑amortization” events to ensure no value loss or orphaned entries during mid‑loan adjustments. Deposits and withdrawals within Vaults synchronize perfectly with loan funding and repayments, maintaining parity between ledger states. |
| Graceful Edge‑Case Handling | Simulated varied conditions, including clawbacks and asset‑specific freezes, to confirm API and ledger entries remain consistent. Mapped every valid and invalid input against scenarios to guarantee graceful handling without compromising Vault, LoanBroker, or Loan ledger integrity. |
| Security‑First Evaluation (Attackathon) | Completed a specialized Attackathon to identify potential vulnerabilities. All identified bugs and issues were fully addressed and resolved to ensure long‑term security and integrity. |
| Comprehensive Integration | Rigorous testing across all system components to ensure seamless interaction between core features, while enforcing consistent controls and restrictions. |
| Multi‑Interface Validation | Executed testing across RPC and WebSockets to guarantee uniform system behavior and data consistency across supported interfaces. |
3. Types of Testing Conducted
| Testing Type | Description |
|---|---|
| Functional Testing | Verifying each endpoint against defined specifications to ensure it behaves as expected. |
| Regression Testing | Running relevant test cases to confirm that recent changes did not break existing functionalities. |
| End‑to‑End Testing | Testing the complete flow of a feature, confirming that components (potentially developed by different teams) work together as expected. |
4. Test Environment
| Component | Details |
|---|---|
| OS | Ubuntu 22.04 (LTS) |
| CPU Cores | 16 |
| Memory | 128 GB |
| Test Framework | Pytest / Shell script |
5. Test Results Summary
Test Count by Type
| Testing Type | Test Count |
|---|---|
| Feature Testing | 796 |
| Regression Testing | 2 880 |
Feature Tests Breakdown
| Test Category | Count |
|---|---|
| LoanBrokerSet | 132 |
| LoanBrokerDelete | 24 |
| LoanBrokerCoverDeposit | 69 |
| LoanBrokerCoverWithdraw | 91 |
| LoanBrokerCoverClawback | 40 |
| LoanSet | 197 |
| LoanDelete | 37 |
| LoanManage | 77 |
| LoanPay | 129 |
Feature Commit
commit 138d6e751b4e58853093eceb27e861af5e39129c
Author: Ed Hennis
Implement Lending Protocol (unsupported) (#5270)
- Spec: XLS-66
- Introduces amendment "LendingProtocol", but leaves it UNSUPPORTED to
allow for standalone testing, future development work, and potential
bug fixes.
- AccountInfo RPC will indicate the type of pseudo‑account when
appropriate.
- Refactors and improves several existing classes and functional areas,
including Number, STAmount, STObject, json_value, Asset, directory
handling, View helper functions, and unit test helpers.Commit Details
commit 919ded66940bbb18173ddee4014312917668b08a
Author: Ed Henness
Change LendingProtocol feature and dependencies to supported (#5632)Testcases:
https://dev.to/mounika_kunasani/lending-protocol-testcases-1ig4
6. Bugs Found
All internal bugs identified during the testing phase have been analyzed and resolved. Following the implementation of these fixes, extensive validation was performed, and no new bugs or regressions have been reported.
7. Conclusion
This feature has undergone comprehensive functional, regression, and end‑to‑end testing. The majority of the test cases have been executed successfully, with positive outcomes confirming that the core functionalities are working as expected.