access options via session

lib/capybara/driver/base.rb

@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 class Capybara::Driver::Base
-  attr_writer :session_options
+  attr_writer :session
 
   def current_url
     raise NotImplementedError
@@ -142,7 +142,7 @@ class Capybara::Driver::Base
   end
 
   def session_options
-    @session_options || Capybara.session_options
+    (@session && @session.config) || Capybara.session_options
   end
 
   # @deprecated This method is being removed

lib/capybara/session.rb

@@ -99,7 +99,7 @@ module Capybara
           raise Capybara::DriverNotFoundError, "no driver called #{mode.inspect} was found, available drivers: #{other_drivers.join(', ')}"
         end
         driver = Capybara.drivers[mode].call(app)
-        driver.session_options = config
+        driver.session = self if driver.respond_to?(:session=)
         driver
       end
     end