siesta-lite/examples/browser/1.unit-tests/async_code.t.js

Stress-free JavaScript unit testing and functional testing tool, works in NodeJS and browsers

StartTest(function (t) {
    // this function performs an asynchronous addition of 1st argument to second
    var asynchronousFunction = function (a, b, callback, errback) {

        setTimeout(function () {
            var res = a + b

            if (isNaN(res)) {
                errback(res)
            } else {
                callback(res)
            }
        }, 10)
    };

    t.it("Testing arbitrary asynchronous function", function (t) {
        var async1   = t.beginAsync()

        asynchronousFunction(1, 1, function (res) {
            t.endAsync(async1)

            t.is(res, 2, 'Correct result of 1 plus 1')
        }, function () {
            t.fail("Should never get here")
        })
    })


    t.it("Testing arbitrary asynchronous function", function (t) {
        var async2   = t.beginAsync()

        asynchronousFunction(1, {}, function () {
            t.fail("Should never get here")
        }, function (res) {
            t.endAsync(async2)

            t.ok(isNaN(res), '1 plus {} is not a number')
        })
    })
})