go-types/test/isErrorTest.js

Type-checking utilities for JavaScript

"use strict";

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

suite("#isError", function () {

    test("true", function () {
        assert.equal(isError(new Error()), true);
    });

    test("false", function () {
        assert.equal(isError(), false);
        assert.equal(isError(undefined), false);
        assert.equal(isError(null), false);
        assert.equal(isError("error"), false);
        assert.equal(isError({message: "error"}), false);
    });
});