context 'with self generated url' do
   it 'provides the right url for NoSuchElementError' do
     driver.navigate.to url_for('xhtmlTest.html')
     driver.find_element(id: 'nonexistent')
   rescue WebDriver::Error::NoSuchElementError => e
     expect(e.message).to include("#{base_url}#no-such-element-exception")
   end
+
+  it 'provides the right url for StaleElementReferenceError' do
+    driver.navigate.to url_for('xhtmlTest.html')
+    element = driver.find_element(id: 'some-element')
+    driver.execute_script('arguments[0].remove();', element)
+    element.click
+  rescue WebDriver::Error::StaleElementReferenceError => e
+    expect(e.message).to include("#{base_url}#stale-element-reference-exception")
+  end
 end
 

-rest_with_hyphens = rest.gsub(/([A-Z])/, '-\1')
+rest_with_hyphens = rest.gsub(/([A-Z])/) { |match| "-#{match}" }
 

 def url
-  first_word, rest = parsed_class_name.split(/(?=[A-Z])/, 2)
-  rest_with_hyphens = rest.gsub(/([A-Z])/, '-\1')
-  "#{ERROR_URL}##{first_word.downcase}#{rest_with_hyphens.downcase.sub('error', 'exception')}"
+  @url ||= begin
+    first_word, rest = parsed_class_name.split(/(?=[A-Z])/, 2)
+    rest_with_hyphens = rest.gsub(/([A-Z])/) { |match| "-#{match}" }
+    "#{ERROR_URL}##{first_word.downcase}#{rest_with_hyphens.downcase.sub('error', 'exception')}"
+  end
 end
 

-SUPPORT_MSG = 'For documentation on this error, please visit:'
-ERROR_URL = 'https://www.selenium.dev/documentation/webdriver/troubleshooting/errors'
+SUPPORT_MSG = 'For documentation on this error, please visit:'.freeze
+ERROR_URL = 'https://www.selenium.dev/documentation/webdriver/troubleshooting/errors'.freeze