Using xpath with Firewatir

I'm just starting out with ruby and firewatir, so I'm trying to find out if it's just me, or if something is broken with firewatir.开发者_如何学Go

I'm trying to select an element using xpath.

This works:

browser.link(:id => "about").exists #true

This fails

browser.link(:xpath => "//*[@id='about']").exists #false

However, this works as well:

browser.element_by_xpath("//*[@id='about']").exists #true

This is on firewatir 1.7.1

$ ruby -v   #ruby 1.9.2p136 (2010-12-25 revision 30365) [i686-linux]

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Looks like there may be a bug with combining :xpath and multiple attributes, because that XPath query doesn't work for me either when I use :xpath =>:

irb(main):021:0> ff.link(:xpath => "//*[@id='about']").exists?
=> false

But it works if I use the single-attribute style (a comma instead of =>) to find the element, and use "exists?" with a question mark on the end.

Not sure why, but both "exists" and "exists?" are defined, and they have different behavior:

irb(main):018:0> ff.link(:xpath, "//*[@id='about']").exists?
=> true
irb(main):019:0> ff.link(:xpath, "//*[@id='about']").exists
=> ""