Default truffle test snippet
var MetaCoin = artifacts.require("./MetaCoin.sol");
// ... more code
contract('MetaCoin', function(accounts) {
  it("should put 10000 MetaCoin in the first account", async function() {
    let meta = await MetaCoin.deployed();
    let balance = await meta.getBalance.call(accounts[0]);
    assert.equal(balance.valueOf(), 10000, "10000 wasn't in the first account")
  });
   // ... more code
})