twalpole/multi_line_text.rb

## multi_line_text.rb
require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'capybara'
  gem 'puma'
  gem 'selenium-webdriver'
  gem 'webdrivers'
  gem 'byebug'
end

require 'selenium-webdriver'
require "capybara/dsl"

html = DATA.read
app = proc { |env| [200, { "Content-Type" => "text/html" }, [html] ] }

%i[selenium_chrome selenium_chrome_headless].each do |driver|
  puts "Using #{driver}"
  sess = Capybara::Session.new(driver, app)
  sess.visit('/')

  input = sess.find('input')
  text_area = sess.find('textarea')
  c_e = sess.find('div[contenteditable]')

  input.set("this is multi\nline text")
  text_area.set("this is multi\nline text")
  c_e.set("this is multi\nline text")

  sess.assert_selector(:field, with: 'this is multiline text')
  sess.assert_selector(:field, with: "this is multi\nline text")
  sess.assert_text(c_e, "this is multi\nline text")
end
__END__

<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Hello!</title>
    <meta charset="utf-8">
  </head>
  <body>
    <input type="text"/>
    <textarea></textarea>
    <div contenteditable="true" style="height: 100px"></div>
  </body>
</html>
	require 'bundler/inline'

	gemfile do
	source 'https://rubygems.org'
	gem 'capybara'
	gem 'puma'
	gem 'selenium-webdriver'
	gem 'webdrivers'
	gem 'byebug'
	end

	require 'selenium-webdriver'
	require "capybara/dsl"

	html = DATA.read
	app = proc { \|env\| [200, { "Content-Type" => "text/html" }, [html] ] }

	%i[selenium_chrome selenium_chrome_headless].each do \|driver\|
	puts "Using #{driver}"
	sess = Capybara::Session.new(driver, app)
	sess.visit('/')

	input = sess.find('input')
	text_area = sess.find('textarea')
	c_e = sess.find('div[contenteditable]')

	input.set("this is multi\nline text")
	text_area.set("this is multi\nline text")
	c_e.set("this is multi\nline text")

	sess.assert_selector(:field, with: 'this is multiline text')
	sess.assert_selector(:field, with: "this is multi\nline text")
	sess.assert_text(c_e, "this is multi\nline text")
	end
	__END__

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<title>Hello!</title>
	<meta charset="utf-8">
	</head>
	<body>
	<input type="text"/>
	<textarea></textarea>
	<div contenteditable="true" style="height: 100px"></div>
	</body>
	</html>