Multiple Collateral Types & Cross-Asset Operations Testing

[UlyanaAndrukhiv]

Context

Implement comprehensive test coverage for positions using multiple collateral types simultaneously, cross-asset borrowing scenarios, complex multi-hop conversion workflows, and multi-asset liquidation mechanics to ensure the protocol handles diverse asset combinations correctly.

Current tests primarily use FLOW and MOET with limited cross-asset scenarios. Production will involve complex positions with multiple collateral types and cross-asset borrowing. Health calculations become significantly more complex with multiple assets.

Missing Test Coverage

• Multi-Collateral Position Management

  • Single position with FLOW + USDC + WETH collateral
  • Health calculation across different asset types
  • Weighted collateral factors
  • Correlation between collateral assets

• Cross-Asset Borrowing

  • Deposit FLOW, borrow USDC
  • Deposit USDC, borrow WETH
  • Deposit wrapped ETH, end with wrapped BTC
  • Complex swap paths through protocol

• Collateral Conversion

  • User starts with 1000 FLOW
  • Protocol workflow results in 0.5 WETH
  • Multi-hop conversions through DEX integrations
  • Slippage and price impact validation

• Multi-Asset Liquidations

  • Position with 3 collateral types, 2 debt types
  • Liquidator selects which collateral to seize
  • Partial liquidation prioritization
  • Gas optimization for multi-asset operations

• Asset Price Correlation

  • FLOW and USDC prices move independently
  • Health factor changes with uncorrelated price moves
  • Rebalancing with multiple changing prices

Recommended Tests

Test: Deposit 1000 FLOW → Borrow 500 USDC → Health calculation
Test: Position with FLOW+USDC collateral, borrow WETH
Test: Convert 1000 FLOW to 0.5 wrapped ETH via protocol
Test: Liquidate position with 3 collateral types, 2 debt types
Test: FLOW price +10%, USDC price -5%, calculate net health change
Test: User deposits FLOW, borrows MOET, swaps to USDC, repays with WETH

Complex Workflow Test

// Test: Multi-Asset Complex Workflow
// 1. User deposits 1000 FLOW (collateral)
// 2. User deposits 500 USDC (collateral)
// 3. User borrows 300 MOET (debt)
// 4. FLOW price drops 20%
// 5. Position becomes undercollateralized
// 6. Auto-rebalance pulls WETH from topUpSource
// 7. Validate final position: FLOW + USDC + WETH collateral, MOET debt
// 8. Health factor restored to target

Supported Token Matrix Test

// For each pair of (Collateral Type, Borrow Type):
// - FLOW → MOET
// - FLOW → USDC
// - FLOW → WETH
// - USDC → MOET
// - USDC → FLOW
// - USDC → WETH
// - WETH → MOET
// - WETH → FLOW
// - WETH → USDC
//
// Validate:
// 1. Deposit succeeds
// 2. Borrow succeeds
// 3. Health calculated correctly
// 4. Interest accrues properly
// 5. Repayment works
// 6. Withdrawal works