Capybara :: cheatsheet

Cheatsheet1.rb

#Navigating
visit articles_path

#Clicking links and buttons
click_on 'Link Text'
click_button
click_link

#Interacting with forms
attach_file 'Image', '/path/to/image.jpg'
fill_in 'First Name', with: 'John'
check 'A checkbox'
uncheck 'A checkbox'
choose 'A radio button'
select 'Option', from: 'Select box'
unselect

#Limiting
within '.classname' do
  click '...'
end
within_fieldset :id do
  ...
end

#Querying
#Predicates
page.has_css?('.button')
expect(page).to have_css('.button')
page.should have_css('.button')

#Positive    Negative
has_content?    has_no_content?
has_css? (selector)    has_no_css?
has_xpath? (path)    has_no_xpath?
has_link? (selector)    has_no_link?
has_button? (selector)    has_no_button?
has_field? (selector)    has_no_field?
has_checked_field? (selector)    has_unchecked_field?
has_table? (selector)    has_no_table?
has_select? (selector)    has_no_select?
#In Rspec, these also map to matchers like page.should have_content.

#Selectors
expect(page).to have_button('Save')
expect(page).to have_button('#submit')
expect(page).to have_button('//[@id="submit"]')
#The selector arguments can be text, CSS selector, or XPath expression.

#RSpec assertions
page.has_button?('Save')
expect(page).to have_no_button('Save')
#In RSpec, you can use page.should assertions.

#About negatives
expect(page).to have_no_button('Save')   # OK
expect(page).not_to have_button('Save')  # Bad
#Use should have_no_* versions with RSpec matchers because should_not have_* doesn’t wait for a timeout from the driver.

#RSpec
#Matchers
expect(page).to \
  have_selector '.blank-state'
  have_selector 'h1#hola', text: 'Welcome'
  have_button 'Save'
  have_checked_field '#field'
  have_unchecked_field
  have_css '.class'
  have_field '#field'
  have_table '#table'
  have_xpath '//div'
  have_link 'Logout', href: logout_path
  have_select 'Language',
    selected: 'German'
    options: ['Engish', 'German']
    with_options: ['Engish', 'German'] # partial match
  have_text 'Hello',
    type: :visible # or :all
    # alias: have_content

#Common options
#All matchers have these options:

  text: 'welcome'
  text: /Hello/
  visible: true
  count: 4
  between: 2..5
  minimum: 2
  maximum: 5
  wait: 10

#Other features

#Finding
find(selector)
find_button(selector)
find_by_id(id)
find_field(selector)
find_link(selector)
locate

#Scoping
within '#delivery' do
  fill_in 'Street', with: 'Hello'
end
within :xpath, '//article'
within_fieldset
within_table
within_frame
scope_to
find('#x').fill_in('Street', with: 'Hello')
# same as within

#Scripting
execute_script('$("input").trigger("change")')
evaluate_script('window.ga')
#Executes JavaScript.

#Debugging
save_and_open_page
#Opens the webpage in your browser.

#Page
page
  .all('h3')
  .body
  .html
  .source
  .current_host
  .current_path
  .current_url
  
#AJAX
using_wait_time 10 do
  ...
end

#Misc
drag
field_labeled

#Page object
page.status_code == 200
page.response_headers
See: https://www.rubydoc.info/github/jnicklas/capybara/master/Capybara/Session

#Poltergeist
Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, :inspector => true)
end
Capybara.javascript_driver = :poltergeist
Use poltergeist to integrate PhantomJS.

#Blacklist
config.before :each, :js do
  page.driver.browser.url_blacklist = [
    'fonts.googleapis.com',
    'use.typekit.net',
    'f.vimeocdn.com',
    'player.vimeo.com',
    'www.googletagmanager.com'
  ].flat_map { |domain| [ "http://#{domain}", "https://#{domain}" ] }
end

#Debugging
Enable inspector: true and then:
page.driver.debug

#To pause execution for a while:
page.driver.pause

#Selenium
#Accepting confirm() and alert()
accept_alert { ... }
dismiss_confirm { ... }
accept_prompt(with: 'hi') { ... }

#Alternatively:
page.driver.browser.switch_to.alert.accept

# Updating session
page.set_rack_session(foo: 'bar')