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-rw-r--r--config/environments/test.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/config/environments/test.rb b/config/environments/test.rb
index e68cb156d..20fe5f813 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -23,6 +23,10 @@ Rails.application.configure do
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
 
+  # The default store, file_store is shared by processses parallely executed
+  # and should not be used.
+  config.cache_store = :memory_store
+
   # Raise exceptions instead of rendering exception templates.
   config.action_dispatch.show_exceptions = false