Cucumber Step definitions for testing a form that uses jquery's validator plugin

jquery_validate_steps.rb

# goes in features/step_definitions
Then /^I should see the "([^"]*)" error for "([^"]*)"$/ do |error, label|
  field = find_field(label)
  html_label = find("label[for=#{field[:id]}][class=error]")
  html_label.text.should eql(error)
end

Then /^I should not see errors for "([^"]*)"$/ do |label|
  field = find_field(label)
  lambda {find("label[for=#{field[:id]}][class=error]")}.should raise_error(Capybara::ElementNotFound)
end

# example scenario testing a Change Password form

  @javascript
    Scenario: Change password with local validation errors
      Given I am a new, authenticated user
      When I go to the profile page
      And I press "Update"
      Then I should see the "This field is required." error for "user_password"
      Then I should see the "This field is required." error for "user_password_confirmation"
      Then I should see the "This field is required." error for "user_current_password"
      And I fill in "user_password" with "123"
      Then I should see the "Please enter at least 6 characters." error for "user_password"
      And I fill in "user_password" with "123456"
      And I fill in "user_password_confirmation" with "12346"
      Then I should see the "Does not match your password" error for "user_password_confirmation"