Merge pull request #4119 from nebulab/4110-flaky-feature-spec-detecte…

…d-disable-perform-caching-in-dummy-app

Disable perform_caching in DummyApp

core/lib/spree/testing_support/dummy_app.rb

@@ -51,10 +51,15 @@ class Application < ::Rails::Application
     config.cache_classes = true
     config.action_controller.allow_forgery_protection = false
     config.action_controller.default_protect_from_forgery = false
-    config.action_controller.perform_caching = true
     config.action_mailer.perform_caching = false
     config.i18n.fallbacks = true
 
+    # In the test environment, we use the `caching: true` RSpec metadata to
+    # enable caching on select specs. See
+    # core/lib/spree/testing_support/caching.rb. See also
+    # https://github.com/solidusio/solidus/issues/4110
+    config.action_controller.perform_caching = false
+
     # Make debugging easier:
     config.consider_all_requests_local = true
     config.action_dispatch.show_exceptions = false