truffle 2=>3

test/helpers/BasicTokenMock.sol

@@ -0,0 +1,15 @@
+pragma solidity ^0.4.4;
+
+
+import '../../contracts/token/BasicToken.sol';
+
+
+// mock class using BasicToken
+contract BasicTokenMock is BasicToken {
+
+  function BasicTokenMock(address initialAccount, uint initialBalance) {
+    balances[initialAccount] = initialBalance;
+    totalSupply = initialBalance;
+  }
+
+}