Large async await test in Truffle

large_async_await_test.js

  it("should send coin correctly", async function () {
    // Get initial balances of first and second account.
    var account_one = accounts[0];
    var account_two = accounts[1];

    var amount = 10;

    let meta = await MetaCoin.deployed();
    let balance1 = await meta.getBalance.call(account_one);
    let balance2 = await meta.getBalance.call(account_two);

    let account_one_starting_balance = balance1.toNumber();
    let account_two_starting_balance = balance2.toNumber();

    await meta.sendCoin(account_two, amount, {from: account_one});

    let balance3 = await meta.getBalance.call(account_one);
    let balance4 = await meta.getBalance.call(account_two);

    let account_one_ending_balance = balance3.toNumber();
    let account_two_ending_balance = balance4.toNumber();

    assert.equal(account_one_ending_balance, account_one_starting_balance - 10, "Amount wasn't correctly taken from the sender");
    assert.equal(account_two_ending_balance, account_two_starting_balance + 10, "Amount wasn't correctly sent to the receiver");
  });