--- a/tests/src/util/contracthelpers.ts
+++ b/tests/src/util/contracthelpers.ts
@@ -14,7 +14,7 @@
 chai.use(chaiAsPromised);
 const expect = chai.expect;
 import { BigNumber } from 'bignumber.js';
-import { findUnusedAddress } from '../util/helpers';
+import { findUnusedAddress, getGenericResult } from '../util/helpers';
 
 const value = 0;
 const gasLimit = '200000000000';
@@ -92,6 +92,14 @@
   return (result.result.asOk.data[0] == 0x00) ? false : true;
 }
 
+export async function toggleFlipValueExpectSuccess(sender: IKeyringPair, contract: Contract) {
+  const tx = contract.tx.flip(value, gasLimit);
+  const events = await submitTransactionAsync(sender, tx);
+  const result = getGenericResult(events);
+
+  expect(result.success).to.be.true;
+}
+
 function instantiateTransferContract(alice: IKeyringPair, blueprint: Blueprint) : Promise<any> {
   return new Promise<any>(async (resolve, reject) => {
     const unsub = await blueprint.tx