dfcreative/define-state

var defineState = require('./');
var assert = require('assert');

describe('Define state', function () {
    it('define getter/setter', function () {
        var a = {
            x: 1
        },
        c = 0;

        defineState(a, 'z', {
            1: {
                before: function () {
                    c++;
                    assert.equal(this, a);
                },

                after: function () {
                    c++;
                }
            },

            _: 1
        });

        assert.equal(a.z, undefined);
        assert.equal(c, 0);

        a.z = 1;
        assert.equal(c, 1);
        assert.equal(a.z, 1);

        a.z = 2;
        assert.equal(c, 3);
        assert.equal(a.z, 1);
    });

    it('define accessor', function () {
        var a = {
            x: 1
        },
        c = 0;

        defineState(a, 'z', {
            1: {
                before: function () {
                    c++;
                    assert.equal(this, a);
                },

                after: function () {
                    c++;
                }
            },

            _: 1
        }, true);

        assert.equal(a.z(), undefined);
        assert.equal(c, 0);

        a.z(1);
        assert.equal(c, 1);
        assert.equal(a.z(), 1);

        a.z(2);
        assert.equal(c, 3);
        assert.equal(a.z(), 1);
    });
});