Using Webrat to check a list has a specific number of li elements

For a cucumber step, I know that a particular ul element should have 5 children li. How can I assert this with Webrat?

I开发者_Python百科'm guessing there could be something like:

Then ".selector" should have n ".another-selector"

or maybe

Then I should see n ".selector" within ".another.selector"

Is there anything like this floating around, or should I make a custom step?

Thanks!

Update:

I've resorted to the following, which seems to work fine:

# Check there are the correct number of items
assert_have_selector("#activity ol li:nth-child(5)")
assert_have_no_selector("#activity ol li:nth-child(6)")

Another update:

I've made a little change to what Matt has supplied:

Then /^I should see ([0-9]+) "([^\"]*)"$/ do |count, selector|
  response.body.should have_selector(selector, :count => count.to_i)
end

Works a treat!

This is how I do it:

Then /^"([^\"]*)" should have ([0-9]+) "([^\"]*)"$/ do |selector1, count, selector2|
  within(selector1) do |content|
       content.should have_selector(selector2, :count => count.to_i)
  end
end

That oughta do the trick?

Matta