Robotframework Selenium2 Execute Javascript

Question

I'm using Robotframework with Selenium 2 & trying to Execute Javascript on Firefox. I've tried loads of different statements, for example:

Execute Javascript    (function(){alert('hello'); return {'test':'hello'};})()

But they all fail with the same exception. I'm only having a problem with Firefox (22 & 23) but Chrome is fine. This is what I see in the log.html when I run with pybot --loglevel debug.

KEYWORD: Selenium2Library.Execute Javascript (function(){alert('hello'); return {'test':'hello'};})()
Documentation:  
Executes the given JavaScript code.
Start / End / Elapsed:  20130812 16:58:35.184 / 20130812 16:58:46.934 / 00:00:11.750
Expand AllKEYWORD: Selenium2Library.Capture Page Screenshot
16:58:35.185    INFO    Executing JavaScript:
(function(){alert('hello'); return {'test':'hello'};})()
16:58:35.185    DEBUG   POST http://127.0.0.1:54281/hub/session/df0916e9-1bf1-fa42-98c5-c3d7a981c096/execute {"sessionId": "df0916e9-1bf1-fa42-98c5-c3d7a981c096", "args": [], "script": "(function(){alert('hello'); return {'test':'hello'};})()"}
16:58:46.934    FAIL    WebDriverException
16:58:46.934    DEBUG   Traceback (most recent call last):
  File "<string>", line 2, in execute_javascript
  File "/Users/will/apps/OMERO.libs/lib/python2.6/site-packages/Selenium2Library/keywords/keywordgroup.py", line 12, in _run_on_failure_decorator
    return method(*args, **kwargs)
  File "/Users/will/apps/OMERO.libs/lib/python2.6/site-packages/Selenium2Library/keywords/_javascript.py", line 92, in execute_javascript
    return self._current_browser().execute_script(js)
  File "/Users/will/apps/OMERO.libs/lib/python2.6/site-packages/selenium/webdriver/remote/webdriver.py", line 397, in execute_script
    {'script': script, 'args':converted_args})['value']
  File "/Users/will/apps/OMERO.libs/lib/python2.6/site-packages/Selenium2Library/webdrivermonkeypatches.py", line 11, in execute
    result = self._base_execute(driver_command, params)
  File "/Users/will/apps/OMERO.libs/lib/python2.6/site-packages/selenium/webdriver/remote/webdriver.py", line 165, in execute
    self.error_handler.check_response(response)
  File "/Users/will/apps/OMERO.libs/lib/python2.6/site-packages/selenium/webdriver/remote/errorhandler.py", line 158, in check_response
    raise exception_class(message, screen, stacktrace)

If I go into webdriver.py and comment out the line

self.error_handler.check_response(response)

then the test passes, but I still don't actually get the javascript executing.

Another Update - I found that this issue only affects Firefox 22 & 23. If I go back to Firefox 21 then it works OK.

Kevin Driedger Kevin Driedger · Accepted Answer · 2015-01-16T14:36:31

When I tried:

Execute Javascript    (function(){alert('hello'); return {'test':'hello'};})()

I saw the alert popup in Firefox 35

Robotframework Selenium2 Execute Javascript

1 Answers