truffle 2=>3

test/helpers/PullPaymentMock.sol

@@ -0,0 +1,17 @@
+pragma solidity ^0.4.4;
+
+
+import '../../contracts/payment/PullPayment.sol';
+
+
+// mock class using PullPayment
+contract PullPaymentMock is PullPayment {
+
+  function PullPaymentMock() payable { }
+
+  // test helper function to call asyncSend
+  function callSend(address dest, uint amount) {
+    asyncSend(dest, amount);
+  }
+
+}