test.js

//self running function to encapsulate all the variables
var Test = function() {


var testBIN = '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';


var testABI = [
  {
    "constant": true,
    "inputs": [],
    "name": "balance",
    "outputs": [
      {
        "name": "",
        "type": "uint256"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "name": "_value",
        "type": "uint256"
      }
    ],
    "name": "deposit",
    "outputs": [
      {
        "name": "_newValue",
        "type": "uint256"
      }
    ],
    "payable": false,
    "type": "function"
  },
  {
    "inputs": [],
    "payable": false,
    "type": "constructor"
  }
];
  /* END SOLIDITY GENERATED DATA */

  /* JS CONTRACT  FUNCTIONS */

  var deployTestContract = function(from,gas) { //from and gas are optional
    var transactionObj =  {
      from: from,
      data: testBIN,
      gas: gas
    };
    var testContractInstance = TestContract
      .new(transactionObj);
    return testContractInstance;
  };

  //CREATE CONTRACT
  var TestContract = eth.contract(eth.coinbase,1000000)

  //return public variables and functions
  return {
    contract: TestContract,
    deploy: deployTestContract,
  };
}();

/* Example of commands
loadScript('Test.js');
personal.unlockAccount(eth.accounts[0],'password')
Test.contractInstance = Test.deploy(eth.accounts[0]); //WAIT FOR CONTRACT TO BE MINED!
Test.contractInstance.balance.call();
Test.contractInstance.deposit.sendTransaction(10,{from: eth.accounts[0], gas: 1000000 });
Test.contractInstance.balance.call();

 */

test.sol

pragma solidity ^0.4.10;

contract HelloWorldTwo{
    uint public balance;

    function HelloWorldTwo(){
        balance = 50;
    }
    function deposit(uint _value) returns(uint _newValue){
        balance += _value;
        return balance;
    }
}