tests: integration tests for Liquid Tapleaf scripts

package.json

@@ -18,7 +18,7 @@
     "test": "npm run test:solidity && npm run test:unit && npm run test:int",
     "test:solidity": "forge test",
     "test:unit": "jest test/unit",
-    "test:int": "jest test/integration",
+    "test:int": "jest test/integration --runInBand",
     "deploy:solidity": "forge script Deploy --broadcast --rpc-url http://127.0.0.1:8545 --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80",
     "changelog": "git-cliff -o CHANGELOG.md",
     "preversion": "npm run lint && npm run compile && npm run test",
@@ -80,7 +80,7 @@
     "prettier": "^3.2.4",
     "slip77": "^0.2.0",
     "tiny-secp256k1": "^2.2.3",
-    "ts-jest": "^29.1.1",
+    "ts-jest": "^29.1.2",
     "ts-node": "^10.9.2",
     "typechain": "^8.3.2",
     "typescript": "^5.3.3",

test/integration/liquid/swapTree/SwapTreeClaim.spec.ts

@@ -10,7 +10,7 @@ import {
 import { hashForWitnessV1 } from '../../../../lib/liquid/swap/TaprooUtils';
 import reverseSwapTree from '../../../../lib/swap/ReverseSwapTree';
 import swapTree from '../../../../lib/swap/SwapTree';
-import { slip77 } from '../../../unit/Utils';
+import { ECPair, slip77 } from '../../../unit/Utils';
 import {
   claimSwap,
   createSwapOutput,
@@ -106,5 +106,38 @@ describe.each`
       );
       await claimSwap([utxo], blindingKey);
     });
+
+    test('should not claim via script path when preimage is invalid', async () => {
+      const { utxo } = await createSwapOutput<LiquidClaimDetails>(
+        OutputType.Taproot,
+        false,
+        treeFunc,
+        undefined,
+        blindInputs,
+      );
+      utxo.preimage = randomBytes(32);
+
+      await expect(claimSwap([utxo], blindingKey)).rejects.toEqual({
+        code: -26,
+        message:
+          'non-mandatory-script-verify-flag (Script failed an OP_EQUALVERIFY operation)',
+      });
+    });
+
+    test('should not claim via script path when claim key is invalid', async () => {
+      const { utxo } = await createSwapOutput<LiquidClaimDetails>(
+        OutputType.Taproot,
+        false,
+        treeFunc,
+        undefined,
+        blindInputs,
+      );
+      utxo.keys = ECPair.makeRandom();
+
+      await expect(claimSwap([utxo], blindingKey)).rejects.toEqual({
+        code: -26,
+        message: 'non-mandatory-script-verify-flag (Invalid Schnorr signature)',
+      });
+    });
   },
 );

test/integration/liquid/swapTree/SwapTreeRefund.spec.ts

@@ -1,9 +1,9 @@
 import zkp from '@vulpemventures/secp256k1-zkp';
 import { OutputType } from '../../../../lib/consts/Enums';
-import { init } from '../../../../lib/liquid';
+import { LiquidClaimDetails, init } from '../../../../lib/liquid';
 import reverseSwapTree from '../../../../lib/swap/ReverseSwapTree';
 import swapTree from '../../../../lib/swap/SwapTree';
-import { slip77 } from '../../../unit/Utils';
+import { ECPair, slip77 } from '../../../unit/Utils';
 import {
   createSwapOutput,
   destinationOutput,
@@ -25,6 +25,10 @@ describe.each`
 `(
   '$name refund (inputs blinded $blindInputs; output blinded $blindOutput)',
   ({ treeFunc, blindInputs, blindOutput }) => {
+    const blindingKey = blindOutput
+      ? slip77.derive(destinationOutput).publicKey!
+      : undefined;
+
     beforeAll(async () => {
       init(await zkp());
       await Promise.all([utilsInit(), elementsClient.init()]);
@@ -36,18 +40,48 @@ describe.each`
 
     test('should refund via script path', async () => {
       const timeout = (await elementsClient.getBlockchainInfo()).blocks;
-      const { utxo } = await createSwapOutput(
+      const { utxo } = await createSwapOutput<LiquidClaimDetails>(
         OutputType.Taproot,
         true,
         treeFunc,
         timeout,
         blindInputs,
       );
-      await refundSwap(
-        [utxo],
+      await refundSwap([utxo], timeout, blindingKey);
+    });
+
+    test('should not refund via script path when timelock is not reached', async () => {
+      const timeout = (await elementsClient.getBlockchainInfo()).blocks;
+      const { utxo } = await createSwapOutput<LiquidClaimDetails>(
+        OutputType.Taproot,
+        true,
+        treeFunc,
+        timeout + 21,
+        blindInputs,
+      );
+
+      await expect(refundSwap([utxo], timeout, blindingKey)).rejects.toEqual({
+        code: -26,
+        message:
+          'non-mandatory-script-verify-flag (Locktime requirement not satisfied)',
+      });
+    });
+
+    test('should not refund via script path when refund key is invalid', async () => {
+      const timeout = (await elementsClient.getBlockchainInfo()).blocks;
+      const { utxo } = await createSwapOutput<LiquidClaimDetails>(
+        OutputType.Taproot,
+        true,
+        treeFunc,
         timeout,
-        blindOutput ? slip77.derive(destinationOutput).publicKey! : undefined,
+        blindInputs,
       );
+      utxo.keys = ECPair.makeRandom();
+
+      await expect(refundSwap([utxo], timeout, blindingKey)).rejects.toEqual({
+        code: -26,
+        message: 'non-mandatory-script-verify-flag (Invalid Schnorr signature)',
+      });
     });
   },
 );