Solidity – Accessing Test Accounts Created by TestRPC with Truffle

You can directly add the addresses in the solidity contract instead of addresses[1] and addresses[2]. If you do not want to do that, then you can declare some variables in the contract for the addresses and intialize them as part of the constructor as shown below.

contract TestBAToken {
  address companyFundAddress;
  address userFundAddress;
  function TestBAToken(address address1, address address2) {
    companyFundAddress = address1;
    userFundAddress = address2;
  }
  function testNewBATokenNotFinalized() {
    uint256 startBlock = block.number - 100;
    uint256 endBlock = block.number + 100;
    BAToken ba = new BAToken(companyFundAddress, userFundAddress, startBlock, endBlock);
    Assert.equal(ba.isFinalized, false, "Token sale shouldn't be finalized upon initialization.");
  }
}

If you want the declare the addresses inside that function only rather than the complete contract. You can pass them as arguments for testNewBATokenNotFinalized function.

The way to implement depends on how you would like the contract to be and what it should do.

In the truffle console you can access them with web3.eth.getBalance(web3.eth.accounts[0]), just replace the zero.

In a Javascript file you can easily access them as showed in the basic metacoin test:

var MetaCoin = artifacts.require("./MetaCoin.sol");

contract('MetaCoin', function(accounts) {
  it("should put 10000 MetaCoin in the first account", function() {
    return MetaCoin.deployed().then(function(instance) {
      return instance.getBalance.call(accounts[0]);
    }).then(function(balance) {
      assert.equal(balance.valueOf(), 10000, "10000 wasn't in the first account");
    });
  });
});

In principle the contract doesn't know on which network it's deployed, therefore I'm not sure that you can do it from within the solidity contract.