Question

I have a table in my app.

Using Capybara and Cucumber, how do I assert that values 4.5 and 1.1 happen only in the Mike’s row?
Is such assertion possible in Capybara?

Thanks!

Answer 1

Yes, it’s possible and easy:

def td_text(n)
  find(:xpath, "./td[#{n}]").text
end

h = {2 => 4.5, 3 => 1.1}

all('table tr').each do |row|
  within row do
    if td_text(1) == 'Mike'
      h.each { |i, value| td_text(i).should == value.to_s }
    else
      h.each { |i, value| td_text(i).should_not == value.to_s }
    end
  end
end

Here’s full script that you can use for testing

Update: I thought about it more. The code above will be very slow as every invocation of find and text in td_text will make new query to browser.

The only way to mitigate it that I see is to use JS and Nokogiri:

source = page.evaluate_script("document.getElementsByTagName('table')[0].innerHTML")

doc = Nokogiri::HTML(source)

def td_text(row, n)
  row.xpath("./td[#{n}]").text
end

h = {2 => 4.5, 3 => 1.1}

doc.css('tr').each do |row|
  if td_text(row, 1) == 'Mike'
    h.each { |i, value| td_text(row, i).should == value.to_s }
  else
    h.each { |i, value| td_text(row, i).should_not == value.to_s }
  end
end

The first variant of code runs about 200 milliseconds at my machine though the second one – 8 milliseconds. Good optimization!