tobi

by LearnBoost

LearnBoost / tobi

Tobi: Expressive server-side functional testing with jQuery

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Tobi

Expressive server-side functional testing with jQuery and jsdom.

Tobi allows you to test your web application as if it were a browser. Interactions with your app are performed via jsdom, htmlparser, and jQuery, in combination with Tobi's Cookie Jar, provides a natural JavaScript API for traversing, manipulating and asserting the DOM, and session based browsing.

Example

In the example below, we have an http server or express app

require()
ed, and we simply create new tobi
Browser
for that app to test against. Then we
GET /login
, receiving a response to assert headers, status codes etc, and the
$
jQuery context.

We can then use regular css selectors to grab the form, we use tobi's

.fill()
method to fill some inputs (supports textareas, checkboxes, radios, etc), then we proceed to submitting the form, again receiving a response and the jQuery context.
var tobi = require('tobi')
  , app = require('./my/app')
  , browser = tobi.createBrowser(app);

browser.get('/login', function(res, $){ $('form') .fill({ username: 'tj', password: 'tobi' }) .submit(function(res, $){ res.should.have.status(200); res.should.have.header('Content-Length'); res.should.have.header('Content-Type', 'text/html; charset=utf-8'); $('ul.messages').should.have.one('li', 'Successfully authenticated'); browser.get('/login', function(res, $){ res.should.have.status(200); $('ul.messages').should.have.one('li', 'Already authenticated'); // We are finished testing, close the server app.close(); }); }); });

Browser

Tobi provides the

Browser
object, created via
tobi.createBrowser(app)
, where
app
is a node
http.Server
, so for example Connect or Express apps will work just fine. There is no need to invoke
listen()
as this is handled by Tobi, and requests will be deferred until the server is listening.

Alternatively you may pass a

port
and
host
to
createBrowser()
, for example:
var browser = tobi.createBrowser(80, 'lb.dev'); 

Evaluate External Resources

To evaluate script tags simply pass the

{ external: true }
option:
var browser = tobi.createBrowser(app, { external: true });

Browser#get()

Perform a

GET
request with optional
options
containing headers, etc:
browser.get('/login', function(res, $){

});

With options:

browser.get('/login', { headers: { ... }}, function(res, $){

});

Aliased as

visit
, and
open
.

Browser#post()

Perform a

POST
request with optional
options
containing headers, body etc:
browser.post('/login', function(res, $){

});

With options:

browser.post('/login', { body: 'foo=bar' }, function(res, $){

});

Browser#back()

GET
the previous page:
browser.get('/', function(){
  // on /
  browser.get('/foo', function(){
    // on /foo
    browser.back(function(){
      // on /
    });
  });
});

Browser locators

Locators are extended extend selectors, the rules are as following:

  • element text
  • element id
  • element value
  • css selector

These rules apply to all

Browser
related methods such as
click()
,
fill()
,
type()
etc. Provided the following markup:

  


The following locators will match the input:

.click('Login');
.click('form-login');
.click('input[type=submit]');
.click(':submit');

Browser#click(locator[, fn])

Tobi allows you to

click()
a
elements,
button[type=submit]
elements, and
input[type=submit]
elements in order to submit a form, or request a url.

Submitting a form:

browser.click('Login', function(res, $){

});

Submitting with jQuery (no locators):

$('form :submit').click(function(res, $){

});

Clicking a link:

browser.click('Register Account', function(res, $){

});

Clicking with jQuery (no locators):

$('a.register', function(res, $){

});

Browser#submit(locator|fn, fn)

Submit the first form in context:

browser.submit(function(res, $){

});

browser.submit(function(){

});

Browser#type(locator, str)

"Type" the given str:

browser
  .type('username', 'tj') 
  .type('password', 'foobar');

Browser#{check,uncheck}(locator)

Check or uncheck the given locator:

browser
  .check('agreement')
  .uncheck('agreement');

Browser#select(locator, options)

Select the given option or options:

browser
  .select('colors', 'Red')
  .select('colors', ['Red', 'Green']);

Browser#fill(locator, fields)

Fill the given fields, supporting all types of inputs. For example we might have the following form:


  
  
  

  
    Never
    Daily
    Weekly
  

  
    Red
    Green
    Blue
  
 

Which can be filled using locators:

browser
  .fill({
      'user[name]': 'tj'
    , 'user[email]': '[email protected]'
    , 'user[agreement]': true
    , 'user[digest]': 'Daily'
    , 'user[favorite-colors]': ['red', 'Green']
  }).submit(function(){

});

With jQuery:

$('form')
  .fill({
      'user[name]': 'tj'
    , 'user[favorite-colors]': 'red'
  }).submit(function(){

});

Browser#text(locator)

Return text at the given locator. For example if we have the form option somewhere in our markup:

Once per day

We can invoke

browser.text('once')
returning "Once per day".

Browser#{context,within}(selector, fn)

Alter the browser context for the duration of the given callback

fn
. For example if you have several forms on a page, an wish to focus on one:

Example test using contexts:

browser.get('/search', function(res, $){

// Global context has 2 forms $('form').should.have.length(2);

// Focus on the second div browser.within('div:nth-child(2)', function(){

// We now have one form, and no direct input children
$('> form').should.have.length(1);
$('> input').should.have.length(0);

// Focus on the form, we now have a single direct input child
browser.within('form', function(){
  $('> form').should.have.length(0);
  $('> input').should.have.length(1);
});

// Back to our div focus, we have one form again
$('> form').should.have.length(1);
$('> input').should.have.length(0);

// Methods such as .type() etc work with contexts
browser
.type('query', 'foo bar')
.submit(function(res){

});

});

// Back to global context $('form').should.have.length(2); });

Assertions

Tobi extends the should.js assertion library to provide you with DOM and response related assertion methods.

Assertion#text(str|regexp)

Assert element text via regexp or string:

  elem.should.have.text('foo bar');
  elem.should.have.text(/^foo/);
  elem.should.not.have.text('rawr');

When asserting a descendant's text amongst a heap of elements, we can utilize the

.include
modifier:
  $('*').should.include.text('My Site');

Assertion#many(selector)

Assert that one or more of the given selector is present:

  ul.should.have.many('li');

Assertion#one(selector)

Assert that one of the given selector is present:

  p.should.have.one('input');

Assertion#attr(key[, val])

Assert that the given key exists, with optional val:

  p.should.not.have.attr('href');
  a.should.have.attr('href');
  a.should.have.attr('href', 'http://learnboost.com');

Shortcuts are also provided:

- id()
- title()
- href()
- alt()
- src()
- rel()
- media()
- name()
- action()
- method()
- value()
- enabled
- disabled
- checked
- selected

For example:

  form.should.have.id('user-edit');
  form.should.have.action('/login');
  form.should.have.method('post');
  checkbox.should.be.enabled;
  checkbox.should.be.disabled;
  option.should.be.selected;
  option.should.not.be.selected;

Assertion#class(name)

Assert that the element has the given class name.

  form.should.have.class('user-edit');

Assertion#status(code)

Assert response status code:

  res.should.have.status(200);
  res.should.not.have.status(500);

Assertion#header(field[, val])

Assert presence of response header field and optional val:

  res.should.have.header('Content-Length');
  res.should.have.header('Content-Type', 'text/html');

Testing

Install the deps:

$ npm install

and execute:

$ make test

WWTD

What Would Tobi Do:

Tobi

License

(The MIT License)

Copyright (c) 2010 LearnBoost <[email protected]>

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation te rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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