Checking refund balance

fundfail3.js

    var eth_balance_after_refund = [];
    for (i = 0; i < eth.accounts.length; i++) {
        eth_balance_after_refund.push(web3.fromWei(eth.getBalance(eth.accounts[i])));
    }
    addToTest('eth_balance_after_refund', eth_balance_after_refund);

    var refund = [];
    for (i = 0; i < eth.accounts.length; i++) {
        refund.push((bigDiffRound(
            testMap['eth_balance_after_refund'][i],
            testMap['eth_balance_before_refund'][i]
        )));
    }
    addToTest('refund', refund);
    testResults();