Merge pull request #178 from onflow/UlianaAndrukhiv/149-oracle-failure-and-manipulation-testing

Oracle Failure & Manipulation Testing

Author: UlyanaAndrukhiv

cadence/contracts/mocks/MockOracle.cdc

@@ -65,7 +65,7 @@ access(all) contract MockOracle {
         }
     }
 
-    access(all) fun setPrice(forToken: Type, price: UFix64) {
+    access(all) fun setPrice(forToken: Type, price: UFix64?) {
         self.mockedPrices[forToken] = price
     }
 

cadence/scripts/flow-alp/get_is_liquidatable.cdc

@@ -0,0 +1,16 @@
+import "FlowALPv0"
+
+/// Returns whether a position is eligible for liquidation
+///
+/// A position is liquidatable when its health factor is below 1.0,
+/// indicating it has crossed the global liquidation threshold.
+///
+/// @param pid: The unique identifier of the position.
+/// @return `true` if the position can be liquidated, otherwise `false`.
+access(all) fun main(pid: UInt64): Bool {
+    let protocolAddress = Type<@FlowALPv0.Pool>().address!
+    let pool = getAccount(protocolAddress).capabilities.borrow<&FlowALPv0.Pool>(FlowALPv0.PoolPublicPath)
+        ?? panic("Could not find Pool at path \(FlowALPv0.PoolPublicPath)")
+    
+    return pool.isLiquidatable(pid: pid)
+}