Ruby selenium-webdriver Cheat Sheat

“Selenium WebDriver” is a library to control browser by Java/Ruby/JavaScript code.
This article is a cheat sheet for Ruby “selenium-webdriver“

🗽 Get Started

Install Rubygem selenium-webdriver:

$ gem install selenium-webdriver

Write sample code to sample_scrpit.rb:

require "selenium-webdriver"

# start an instance of firefox with selenium-webdriver
driver = Selenium::WebDriver.for :firefox # generate browser object

driver.get "http://localhost:3000"

# wait for a specific element to show up
wait = Selenium::WebDriver::Wait.new(timeout: 10)
wait.until { /Sample Title/.match(browser.page_source) }

driver.find_element(:id, 'hoge').send_keys('fuga')
driver.find_element(:id, 'goto_next').click

puts "Test Passed: Page 1 Validated"

# Drop browser object
driver.quit

Execute the sample code:

$ ruby sample_script.rb

🍄 Locating Element Examples

• find_element - Find the first element matching the given arguments
• find_elements - Find all elements matching the given arguments

# Find the element by ID
element = driver.find_element(:id, "sample-id")

# Find the element by class name
elements = driver.find_element(:class, 'sample-class')

# Find the element by tag name
element = driver.find_element(:tag_name, 'div')

# Find the element by name
element = driver.find_element(:name, 'search')

# Find the element by link text
element = driver.find_element(:link, 'link text')

# Find the element by xpath
element = driver.find_element(:xpath, "//a[@href='/logout']")

🐞 Element Operation Examples

# Click element
driver.find_element(:id, 'button_id').click

# Input some text
driver.find_element(:id, 'TextArea').send_keys 'InputText'

# Select checkbox/radio
driver.find_element(:id, 'check_box_id').click

# Check if it is selected
driver.find_element(:id, 'check_box_id').selected?

# Deselect the element
driver.find_element(:id, 'check_box_id').clear

# get all the options for this element
driver.find_element(:id, "select_id").find_elements(:tag_name, "option")

# Select the options
select.find_elements(:tag_name, "option")(&:click)

# Get text
driver.find_element(:id, 'some_element_id').text

# Get an attribute
class_name = element.attribute("class")

# Upload file
elem = driver.execute_script(js, elem) 
elem.sendKeys("/path/to/file")

🐡 Driver Operation Examples

# Save screen shot
driver.save_screenshot('screenshot.png')

# Wait for a specific element to show up
wait = Selenium::WebDriver::Wait.new(:timeout => 10) # seconds
wait.until { driver.find_element(:id => "foo") }

# WebDriver polls the DOM for a certain amount of time when trying to find an element 
# or elements if they are not immediately available for 30 seconds
driver.manage.timeouts.implicit_wait = 30
element = driver.find_element(:id => "some-dynamic-element")

# Execute arbitrary javascript
puts driver.execute_script("return window.location.pathname")

# Handle JavaScript dialog
a = driver.switch_to.alert
a.text == 'Aleart Message' ? a.dismiss : a.accept

# Switch window
driver.window_handles.each do |handle|
  driver.switch_to.window handle
end

# Delete Cookie
driver.manage.delete_cookie("cookie_name")

🍣 Special Thanks

• Selenium Webdriver CheatSheet
• Selenium Cheat Sheet - Ruby
• How to take a screenshot with Ruby’s Selenium Web Driver - John Bohn
• html - File Upload using Selenium Webdriver and ruby with < button type=”button”>
• Test Design Considerations — Selenium Documentation

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