DeFi Connector Integration Tests

[UlyanaAndrukhiv]

Context

Current Gap: Limited end-to-end testing with DeFi Actions components.

Missing Test Coverage:

• Source Failures

  • topUpSource returns vault with less than requested amount
  • topUpSource reverts on withdrawal
  • topUpSource provides wrong token type
  • Error handling and position state

• Sink Failures

  • drawDownSink rejects deposit
  • drawDownSink accepts partial amount
  • drawDownSink provides wrong type
  • Rebalance failure handling

• Swapper Incorrect Amounts

  • Swapper returns less tokens than quoted
  • Swapper returns wrong token type
  • Slippage protection validation
  • Transaction revert on excessive slippage

• Flash Loan Callback Manipulation

  • Flash loan callback attempts reentrancy
  • Callback modifies global state unexpectedly
  • Callback fails to repay loan
  • Proper error handling and rollback

• Reentrancy via DeFi Actions

  • Malicious Sink calls back into protocol during deposit
  • Malicious Source calls back during withdrawal
  • Reentrancy guards effectiveness
  • State consistency validation

• Malicious Connector Contracts

  • Connector attempts to drain funds
  • Connector provides false quotes
  • Connector fails to return vaults
  • Protocol defensive validation

Recommended Tests:

Test: topUpSource returns 50% of requested amount
Test: drawDownSink rejects deposit, rebalance handles failure
Test: Swapper returns 10% less than quoted, slippage check
Test: Flash loan callback attempts reentrancy, guard blocks
Test: Malicious Sink calls protocol during deposit, reentrancy blocked
Test: Connector provides false quote, transaction validates and reverts