Python Selenium UnexpectedAlertPresentException

Question

I am running basic CRUD tests with python and lettuce using selenium webdriver.

All of my other tests run fine, but when I click "Delete", there is a modal dialog which asks the user to confirm that they want to delete that user. The moment the popup appears, I get the exception below. I have wasted 2 hours trying to get this to work. I would imagine there is a simple fix.

 File "/usr/local/lib/python2.7/dist-packages/selenium/webdriver/remote/errorhandler.py", line 164, in check_response     raise exception_class(message, screen, stacktrace) UnexpectedAlertPresentException: Message: u'Modal dialog present' ; Stacktrace:      at nsCommandProcessor.prototype.execute (file:///tmp/tmpeV2K89/extensions/[email protected]/components/command_processor.js:11520:13) 

The line in steps.py that is throwing the error is this.

  world.browser.find_element_by_link_text("Delete User").click() 

And the html for that element is this.

<a href="/users/5910974510923776/delete" onclick="return confirm('Are you sure you want to delete this user?');">Delete User</a> 

Answer 1

You need to switch to the alert and accept it:

world.browser.find_element_by_link_text("Delete User").click() alert = world.browser.switch_to.alert alert.accept()