Test::Unit Assert throws error instead of sending "false" for existence of page element

[Abe Heward]

Hey guys,

I'm using watir-webdriver (0.3.3) and Test::Unit.

In my code I'm trying to validate that an object is NOT present on the page...

assert_equal(false, @browser.button(:id=>"post").exist?)

...However, instead of getting the "false" result for the .exist?, apparently it's throwing this selenium error:

Selenium::WebDriver::Error::ObsoleteElementError: Element not found in the cache

I suppose I can validate the non-existence of page elements in some other way, but shouldn't I just get a "false" returned for that .exist? method?

[Jari Bakken]

Yes, it should. Can you provide a reduced example where that's not the case?

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[Abe Heward]

I did some more experimentation and this is what I found:

puts @browser.button(:id=>"post").exist?

...will return false (Note that this is expected, as there's not such a button on the page), whereas

puts @browser.frame(:index=>1).button(:id=>"post").exist?

Will throw the "element not found in the cache" error.  There *are* a few iframes on the page.

I hope that's enough additional information to help.