HTMLunit is a framework written in Java that simulates a client application to a your webserver, i.e. a browser. This one does that by going to a site, parsing through all the site and executing all javascript it comes across. And it works to! We use a lot of ajax on our site, and everything seems to work. It even handles all the jQuery stuff very well. The guys who developed this framework must really have put a lot of work in reproduction all of them browser bugs out there that jQuery ,among other, tries to solve. Respect.
That beeing said, lets complain a little. But not about htmlunit, but about Java. That damn language is so verbose. I want to execute some javascript and get the result to run my tests. No big deal, but in Java i have to type something like :
(new WebClient (
new URL("http://www.google.com"))).
getPage().executeJavaScriptResult("1+1").
getScriptResult()where as in Ruby, this would probably be something like:
Web::Client::Page.
new("http://google.com").
js("1+1").resultThis ain't a problem if you sit on eclipse, IntelliJ or something. But the thing is, I don't. And then you have to wrap all of it in classes, main etc. I started doing this but then I quickly converted everything to Jruby, or rather I just started programming in ruby instead and let jruby handle the gap between the lanugages.
The blog Scraping Dynamic Websites Using JRuby and HtmlUnit helped me getting started. But I didn't get the tarball there to work. Instead I downloaded the newest version of HMTLUnit from sourgeforge. After a couple of minutes I was up and running.
It first I tried to just use HTMLunit as a javascript runner, and use JSSpec as the testframework. But a) I didn't get it to function like I expected/ wanted to. b) There are some serious state-charing-related issues that has to be solved. So therefore I just hooked it up with rspec under jruby. It gave me a java-horror-stacktrace but then it just worked!
I was running javascript tests from the console, and it was some pretty advanced stuff. 'Did that element fadeout?, was that element updated? Did I get that response from the server'. It worked, but I wanna give a warning about how slow it was. It was about 1 sec / test. So if you have 1100 tests as we have on the backend....
Now it's just to hooked it all up with CI and we're ready to go.
I'll soon be back with a hands-on tutorial on how to set ut everything. 'til then. Bye!
10 kommentarer:
Sorry that the download from Scraping Dynamic Websites with JRuby did not work from you. What sort of problems were you having? I'd love to know so I can clear up the instructions.
You might like to try Jython as well.
from com.gargoylesoftware.htmlunit import WebClient
wc = WebClient()
page = wc.getPage('http://www.google.com')
@rob : there was a java-versioning problem. Seems like you needed java 1.6 which doesn't seem to be released for the Mac OS X (which I use) yet. Your code was helpful though!
I don't have all the files left on my drive, so I can't reproduce it now. Hope my answer is helpful anyway.
@gareth: Jython is a real nice project which I hadn't find time to test out yet.
The problem here is however that we do all our stuff in ruby, so I figured that you don't wanna change your frame of mind to perform testing.
Does it have midi support?
@schmilblick: Well actually we were discussing midi support for the SoundCloud-website yesterday.
So soon you'll have it your way. Jruby most possible has a midi interface. I really have to check that out.
Take a look at Celerity. It's fab.
Hi check this out. it might be helpful for you. Thanks!
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