buster.js bug

foo-test.js

var buster = require("buster");

function include(path) {
    var fs = require("fs");
    var vm = require("vm");
    var code = fs.readFileSync(path, "utf-8");
    vm.runInThisContext(code, path);
}

include("js/utils/object.js");

buster.testCase("foo", {
    "bar": function () {
        assert.equals(100, 100);
    },
});

object.js

Object.prototype.mixin = function (source) {
    if (arguments.length !== 1)
        return;

    // check for inheritance metadata in the this class
    if (!this.meta) {
        this.meta = {
            inheritsFrom: []
        };
    }

    // add the this class in the inheritance metadata of the this class
    this.meta.inheritsFrom.push(source);

    for (var property in source.prototype) {
        if (this.prototype.hasOwnProperty(property))
            continue;

        // copy missing property from the parent class to the this class
        this.prototype[property] = source.prototype[property];
    }
};

output

Skipping foo, unsupported requirement: mixin
Skipping GameWorld, unsupported requirement: mixin
Skipping Player, unsupported requirement: mixin
Skipping Rectangle, unsupported requirement: mixin
Skipping Stage, unsupported requirement: mixin

Passed: mixin mixin