Wednesday, April 03, 2013

Trying Parasol with Selenium in Pharo Smalltalk

Johan Brichau answered my question from my last post: about the difference between the "Parasol" and "Webtester":
So I gave Parasol a short try today:
  • a fresh Mozilla Firefox was already installed on my machine
  • Parasol still requires old Pharo 1.4, so even when I prefer Pharo 2.0 I downloaded it again
  • I installed the current version selenium-server-standalone-2.31.0.jar of Selenium which can be found here
On Windows (64Bit) I start the JAR with a batch to tell the Java component about the firefox location

java -jar C:\selenium\selenium-server-standalone-2.31.0.jar -Dwebdriver.firefox.bin="C:\Program Files (x86)\Mozilla Firefox\firefox.exe"

Now in Pharo 1.4 image I installed Parasol using:

Gofer new
    url: '';
    package: 'ConfigurationOfParasol';
((Smalltalk at: #ConfigurationOfParasol) project version: #development) load: 'dev'.

WAKomEncoded startOn: 8080.
Deprecation raiseWarning: false; showWarning: false.

Took a while since it loads Seaside. After anything is set up I can easily script the webdriver/Firefox from a Smalltalk workspace. Here is an example:

"Start the driver and open wikipedia" 
driver := BPRemoteWebDriver new.
driver get: ''.
"click on search"
(driver findElementByID: 'searchInput') click.

"enter some text"
driver getKeyboard sendKeys: ('Pharo' , (String with: BPKeys return)).

"query some text from the webpage"
Transcript show: ((driver findElementByID: 'mw-content-text') findElementByTagName: 'p') getText.

driver quit

So it is easy to write SUnit tests or automate some tasks you do on the web using Pharo. With the help of F12 in the webbrowser it is easy to find out about element ids, ... in HTML, so one can easily navigate through pages.

I worked with Selenium in Java and other languages already in the past. Parasol is not as comfortable as with the Selenium IDE recorder - but it works and using Smalltalk usually makes one more productive.

It is nice to see that I can now also control the Firefox browser to automate things and write webtests directly from within Pharo Smalltalk.

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