[rb] Add backtrace locations and cause to errors

rb/lib/selenium/webdriver/common/error.rb

@@ -17,6 +17,7 @@
 # specific language governing permissions and limitations
 # under the License.
 
+require 'English'
 module Selenium
   module WebDriver
     module Error
@@ -37,7 +38,15 @@ def self.for_error(error)
       SUPPORT_MSG = 'For documentation on this error, please visit:'
       ERROR_URL = 'https://www.selenium.dev/documentation/webdriver/troubleshooting/errors'
 
-      class WebDriverError < StandardError; end
+      class WebDriverError < StandardError
+        def backtrace_locations
+          Thread.current.backtrace_locations
+        end
+
+        def cause
+          $ERROR_INFO
+        end
+      end
 
       #
       # An element could not be located on the page using the given search parameters.

rb/spec/integration/selenium/webdriver/error_spec.rb

@@ -29,6 +29,18 @@ module WebDriver
           driver.find_element(id: 'nonexistent')
         }.to raise_error(WebDriver::Error::NoSuchElementError)
       end
+
+      it 'has backtrace locations' do
+        driver.find_element(id: 'nonexistent')
+      rescue WebDriver::Error::NoSuchElementError => e
+        expect(e.backtrace_locations).not_to be_empty
+      end
+
+      it 'has cause' do
+        driver.find_element(id: 'nonexistent')
+      rescue WebDriver::Error::NoSuchElementError => e
+        expect(e.cause).to be_a(WebDriver::Error::NoSuchElementError)
+      end
     end
   end # WebDriver
 end # Selenium