go-types/test/isPrimitiveTest.js

Type-checking utilities for JavaScript

"use strict";

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

suite("#isPrimitive", function () {

    test("true", function () {
        assert.equal(isPrimitive(), true);
        assert.equal(isPrimitive(undefined), true);
        assert.equal(isPrimitive(null), true);
        assert.equal(isPrimitive(false), true);
        assert.equal(isPrimitive(0), true);
        assert.equal(isPrimitive(NaN), true);
        assert.equal(isPrimitive(""), true);

        if (typeof Symbol !== "undefined") {
            assert.equal(isPrimitive(Symbol("abc")), true);
        }

        if (typeof BigInt !== "undefined") {
            assert.equal(isPrimitive(BigInt(1)), true);
        }
    });

    test("false", function () {
        assert.equal(isPrimitive(new Boolean(false)), false);
        assert.equal(isPrimitive(new Number(0)), false);
        assert.equal(isPrimitive(new String("")), false);
        assert.equal(isPrimitive({}), false);
        assert.equal(isPrimitive([]), false);
        assert.equal(isPrimitive(function () {}), false);
    });
});