Testing with mocha, chai and nightmare.js

Nightmare-demo.js

var path = require('path');
var Nightmare = require('nightmare');
var should = require('chai').should();

describe('Nightmare demo', function () {
    this.timeout(15000); // Set timeout to 15 seconds, instead of the original 2 seconds

    var url = 'http://localhost:3000';

    describe('Start page', function () {
        it('should show form when loaded', function (done) {
            new Nightmare()
                .goto(url)
                .evaluate(function () {
                    return document.querySelectorAll('form').length;
                }, function (result) {
                    result.should.equal(1);
                    done();
                })
                .run();
        });
    });

    describe('Send form', function () {
        it('should print the posted string on submit', function (done) {
            var expected = 'Hello, world!';

            new Nightmare()
                .goto(url)
                .type('input[name="sometext"]', expected)
                .click('input[type="submit"]')
                .wait()
                .evaluate(function () {
                    return document.querySelector('#result');
                }, function (element) {
                    element.innerText.should.equal(expected);
                    done();
                })
                .run();
        });

        it('should print "nothing" on submit if no string were provided', function (done) {
            var expected = 'nothing';

            new Nightmare()
                .goto(url)
                .click('input[type="submit"]')
                .wait()
                .evaluate(function () {
                    return document.querySelector('#result');
                }, function (element) {
                    element.innerText.should.equal(expected);
                    done();
                })
                .run();
        });
    });
});