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What’s Watir? Read “Watir: Another sweetspot for Enterprise Ruby”

Is it possible to run JavaScript functions or execute code from within your Watir test scripts? As a matter of fact it is, but I had a hard time finding the proper documentation for it. Here is what to do and how:

Call JavaScript Functions from Watir script

[code lang=”ruby”]

win = ie.document.parentWindow
win.ToggleProj(‘1’)

[/code]

Inject JavaScript to run from Watir script

I used this to alter a JavaScript function on the existing page:
[code lang=”ruby”]
@ie.document.parentWindow.eval(‘
window.CheckReport=function(){return true}’)
[/code]
As you can see, you can reference the window object and use eval to execute your snippets. The easier way is to add this custom method for easy reference

[code lang=”ruby”]
# Add accessor for DOM window object
class Watir::IE; def window; document.parentWindow; end; end
[/code]
Then you can write the last example as:
[code lang=”ruby”]
@ie.window.eval(‘
window.CheckReport=function(){return true}’)
[/code]
Much more intuitive and straightforward. Thanks to my colleague Tobias for the trick.

More info

• Justaddwater.dk: Watir: Another sweetspot for Enterprise Ruby (July 2006)
• Telerik (by Egil): Automating Complex JavaScript-rich Controls with Watir (April 2006)
• DWatir for distributed testing is very promising. I saw the demo at RailsConf but had not yet a chance to use. More info in the code files.

Technorati Tags: ruby, enterprise, business case, watir, testing, javascript

This entry was posted by Jesper Rønn-Jensen on Tuesday, November 20th, 2007 at 21:12 (GMT-1) and is filed under Code, JavaScript. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.