Fixes bug in Test::Schema when using filter_parameters

Author: leonelgalan

lib/active_model_serializers/test/schema.rb

@@ -60,11 +60,11 @@ def call
         attr_reader :document_store
 
         def controller_path
-          request.filtered_parameters[:controller]
+          request.filtered_parameters.with_indifferent_access[:controller]
         end
 
         def action
-          request.filtered_parameters[:action]
+          request.filtered_parameters.with_indifferent_access[:action]
         end
 
         def schema_directory

test/active_model_serializers/test/schema_test.rb

@@ -1,5 +1,7 @@
 require 'test_helper'
 
+Rails.application.config.filter_parameters += [:password]
+
 module ActiveModelSerializers
   module Test
     class SchemaTest < ActionController::TestCase