Watir-WebDriver: Find elements which class is not

Question

I have a bunch of li elements. They are either with uncompleted, 'current' or completed class or without a class.

How do I find all li elements without completed class?

So far I am doing this by selecting necessary li objects from collection of li (through calling #attribute_value('class'), but maybe there is some elegant locating strategy in Watir-WebDriver?

UPD: As long as there is some misunderstanding of the question.

I want to know if there is locating strategy within Watir-WebDriver to find elements which class is not completed.

I know I can do this with Ruby and doing it like this:

browser.lis.select do |li|
  li.attribute_value('class') != 'completed'
end

But the question is if I can do this in one line by passing some argument to #lis

UPD2: Just realized that given class names narrows solutions. Updated question and sorry for that.

Answer 1

In order to not assume that there are only two classes of arrays, you can do:

    all = browser.lis.collect { |li| li.class }
    completed = browser.lis(:class, 'completed').collect { |li| li.class }

    not_completed = (all - completed)

or even:

all = browser.lis.collect { |li| li.class }
not_completed = Array.new

all.each do |li|
    if li.class != "completed"
       not_completed << li
    end
end

Answer 2

The LI collection supports locators, which means you can do:

browser.lis(:class, 'uncompleted').each{ |x|
    puts x.text
}

UPDATE: For the case where there are multiple classes, you can modify the above to use a regex to check for not completed:

browser.lis(:class, /^(?!completed$)/).each{ |x| puts x.class_name }

This returns all li that have no class or are not exactly 'completed' (ex 'completed2').

Note: I think .class_name may have better support than attribute_value('class') (which I believe does not work in IE as it needs to be className).