cleanup the memoized @engine_configuration so we can mock the controller

spec/apps/dummy/config/initializers/scimitar.rb

@@ -27,10 +27,6 @@ def scim_schemas_url(options)
       def scim_resource_type_url(options)
         super(test: 1, **options)
       end
-
-      def valid_token
-        'A'
-      end
     end
 
   })

spec/controllers/scimitar/application_controller_spec.rb

@@ -120,10 +120,14 @@ def index
       def index
         render json: { 'message' => 'cool, cool!' }, format: :scim
       end
+
+      def valid_token
+        'B'
+      end
     end
 
     it 'renders success when valid creds are given' do
-      request.env['HTTP_AUTHORIZATION'] = 'Bearer A'
+      request.env['HTTP_AUTHORIZATION'] = 'Bearer B'
 
       get :index, params: { format: :scim }
       expect(response).to be_ok

spec/spec_helper.rb

@@ -38,6 +38,13 @@
   config.use_transactional_fixtures = true
 
   Kernel.srand config.seed
+
+  config.around :each do | example |
+    original_engine_configuration = Scimitar.instance_variable_get('@engine_configuration')
+    example.run()
+  ensure
+    Scimitar.instance_variable_set('@engine_configuration', original_engine_configuration)
+  end
 end
 
 # ============================================================================