go-types/test/isBigIntTest.js

Type-checking utilities for JavaScript

"use strict";

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

if (typeof BigInt !== "undefined") {
    suite("#isBigInt", function () {

        test("true", function () {
            assert.equal(isBigInt(BigInt(1)), true);
            assert.equal(isBigInt(BigInt(-9876543210123456789)), true);
            assert.equal(isBigInt(BigInt(Number.MAX_VALUE)), true);
        });

        test("false", function () {
            assert.equal(isBigInt(), false);
            assert.equal(isBigInt(0), false);
            assert.equal(isBigInt(0.1), false);
            assert.equal(isBigInt(Number.MAX_VALUE), false);
            assert.equal(isBigInt(Number.MIN_VALUE), false);
            assert.equal(isBigInt(Number.POSITIVE_INFINITY), false);
            assert.equal(isBigInt(Number.NEGATIVE_INFINITY), false);
            assert.equal(isBigInt(Number.NaN), false);
            assert.equal(isBigInt(undefined), false);
            assert.equal(isBigInt(null), false);
            assert.equal(isBigInt({}), false);
            assert.equal(isBigInt([]), false);
            assert.equal(isBigInt("1n"), false);
        });
    });
}