_ruby
TL;DR - Show Me The Code
require 'selenium-webdriver'
require 'rspec/expectations'
include RSpec::Matchers
def setup
@driver = Selenium::WebDriver.for(:firefox)
end
def teardown
@driver.quit
end
def run
setup
yield
teardown
end
run do
@driver.get 'https://the-internet.herokuapp.com/nested_frames'
frame_top = @driver.find_element(name: 'frame-top')
@driver.switch_to.frame(frame_top)
frame_middle = @driver.find_element(name: 'frame-middle')
@driver.switch_to.frame(frame_middle)
expect(@driver.find_element(id: 'content').text).to eql 'MIDDLE'
end
run do
@driver.get 'https://the-internet.herokuapp.com/tinymce'
@driver.switch_to.frame(@driver.find_element(id: 'mce_0_ifr'))
editor = @driver.find_element(id: 'tinymce')
before_text = editor.text
editor.clear
editor.send_keys 'Hello World!'
after_text = editor.text
expect(after_text).not_to eql before_text
@driver.switch_to.default_content
expect(@driver.find_element(css: 'h3').text).not_to be_empty
end
Code Walkthrough
Importing Libraries, Setup and Teardown
We'll first need to pull in our requisite libraries (selenium-webdriver
to drive the browser, and
rspec/expecations
& RSpec::Matchers
to perform our assertions) and wire up some simple setup
, teardown
,
and run
methods.
Example 1
Line 20 shows our first test. In it, we'll step through an example of nested frames from the-internet.
With Selenium's .switch_to.frame
method we can simply switch to the frame we want. It accepts either an
ID or name attribute, but in order to get the text of the middle frame (e.g., a frame nested within another frame),
we need to switch to the parent frame (e.g., the top frame) and then switch to the child frame (e.g., the middle frame).
Once we've done that we're able to find the element we need, grab it's text, and assert that it's what we expect.
While this example helps illustrate the point of frame switching, it's not very practical.
Example 2
Here is a more likely example you'll run into -- working with a WYSIWYG Editor like TinyMCE. You can see the page we're testing here.
Once the page loads we switch into the frame that contains TinyMCE and...
- grab the original text and store it
- clear and input new text
- grab the new text value
- assert that the original and new texts are not the same
Keep in mind that if we need to access a part of the page outside the frame we are currently in we'll need to
switch to it. Thankfully Selenium has a method that enables us to quickly jump back to the top level of the page --
switch_to.default_content
.
Executing the Test
Before executing the test, we need to make sure the required dependencies are declared on the Gemfile
file.
Toggle to see the Gemfile
file.
source 'https://rubygems.org'
gem 'rspec', '~> 3.10'
gem 'selenium-webdriver', '~> 4.24.0'
Finally, we can run the test by executing ruby frames.rb
from the command-line.