Solidity and Truffle Tips and Tricks - unit test from a different account

Supposing you want to carry out a unit test from a specific account that is different as the default account, you can basically use the accounts array that is initialized by the truffle development environment and you can explicitly set a specific account as accounts[i] at the function call:

contract('Contract', function(accounts) {
 it("test Contract other account", function() {
  return Contract.deployed().then(function(instance) {
   return Contract.callFunction( <parameters> {from:accounts[i]});  
   }).then( 
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