go-types/test/isWeakSetTest.js

Type-checking utilities for JavaScript

"use strict";

var assert = require("chai").assert;
var isWeakSet = require("../src/isWeakSet");

if (typeof WeakSet !== "undefined") {
    suite("#isWeakSet", function () {

        test("true", function () {
            assert.equal(isWeakSet(new WeakSet()), true);
        });

        test("false", function () {
            assert.equal(isWeakSet(), false);
            assert.equal(isWeakSet(WeakSet), false);
            assert.equal(isWeakSet(undefined), false);
            assert.equal(isWeakSet(null), false);
            assert.equal(isWeakSet({}), false);
            assert.equal(isWeakSet([]), false);
        });
    });
}