stak/test/test-stak.js

var assert = require("assert"),
    Stak = require("../lib/stack.js");

suite("Stak", function () {
    test("exists", function () {
        assert(Stak);
        assert(Stak.use);
        assert(Stak.handle);
    });

    suite("use", function () {
        test("use works", function () {
            var s = instance(),
                count = 0;

            s.use(function () {
                count++;
                this.next(5);
            });

            s.use(function (i) {
                count += i;
            });

            s.handle();
            assert(count === 6);
        });
    });

    suite("handle", function () {
        test("floor", function (done) {
            var s = instance(function () {
                this.next(true);
            });

            s.handle({
                floor: function (bool) {
                    assert(bool === true);
                    done();
                }
            })
        });

        test("default floor", function (done) {
            var s = instance(function () {
                this.next(true);
            });

            s.floor = function (bool) {
                assert(bool === true);
                done();
            };

            s.handle();
        });

        test("default ceil", function (done) {
            var s = instance(function (bool) {
                assert(bool === true);
                done();
            });

            s.ceil = function () {
                this.next(true);
            };

            s.handle();
        })

        test("ceil", function (done) {
            var s = instance(function (bool) {
                assert(bool === true);
                done();
            });

            s.handle({
                ceil: function () {
                    this.next(true);
                }
            })
        });

        test("context", function (done) {
            var s = instance(function () {
                assert(this.state === true);
                done();
            });

            s.handle({ state: true });
        });

        test("pass other stacks", function (done) {
            var s1 = instance(function () {
                this.next(true);
            });

            var s = instance(s1, function (bool) {
                assert(bool === true);
                done();
            });

            s.handle();
        });
    });
});

function instance() {
    var o = Object.create(Stak);
    return o.constructor.apply(o, arguments);
}