go-types/test/isString.js

Type-checking utilities for JavaScript

"use strict";

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

suite("#isString", function () {

    test("true", function () {
        assert.equal(isString(""), true);
        assert.equal(isString("1"), true);
        assert.equal(isString("abc"), true);
        assert.equal(isString(new String("abc")), true);
    });

    test("false", function () {
        assert.equal(isString(), false);
        assert.equal(isString(undefined), false);
        assert.equal(isString(null), false);
        assert.equal(isString(0), false);
        assert.equal(isString(false), false);
        assert.equal(isString(String), false);
        assert.equal(isString({}), false);
        assert.equal(isString(["a", "b"]), false);
        assert.equal(isString(Symbol("abc")), false);
    });
});