within block fails when it shouldn't, unless selector exercised first about capybara-webkit HOT 5 CLOSED

ok, I discovered that adding:
page.find(*selector_for(locator)).should_not be_nil

doesn't prevent the problem (reliably) but a sleep(1) inside the with_scope block does. So this is some kind of timing issue.

from capybara-webkit.

I think this is a "problem" with selenium-webdriver too. Basically, using within causes the driver to try to find the scope's element immediately whereas page.find uses a timeout mechanism to wait for the element to appear. This causes confusion when you have something like

visit("/foo")
within("#foo") do
  page.find(".bar").click
  # or
  page.should have_css(".bar")
end

If the page is still loading by the time the within runs and #foo has not rendered yet, you'll get trouble. If you do this on the other hand, it should work:

visit("/foo")
page.should have_css("#foo .bar")

because have_css will use a timeout to wait for the selector to be found.

So, though within can be helpful with DRYness, sometimes it's better to do something like:

visit("/foo")
root_selector = "#foo"
page.find("#{root_selector} .bar").click
page.find("#{root_selector} .baz").click
# ... and so on.

or

visit("/foo")
# wait for #foo...
page.should have_css("#foo")
within("#foo") do
  page.find(".bar").click
  # or
  page.should have_css(".bar")
end

from capybara-webkit.

I've checked the within. Currently this is working as expected so I'm going to close this out. If you have any additional issues feel free to reopen.

from capybara-webkit.

For reference: I had a similar problem with a within block in a page that had some javascript dynamically reloading part of the page. The within scope no longer existed and I think that was the cause of my error: "NOT_SUPPORTED_ERR: DOM Exception 9: The implementation did not support the requested type of object or operation.".

Adding a sleep in there seemed to be all I needed to make sure that the page had finished reloading before I continued to interact with it. I additionally made sure that the sleep happened before my within block.

from capybara-webkit.

I encountered same problem today, and by removing with_in block it worked... It didn't cause the tests to fail.

from capybara-webkit.