Commits on Dec 25, 2019

1. Attempt to fix random CI failures …

   We get frequent random CI failures with errors on feature specs, like
   the following:
   
   ```
   Failures:
   
     1) Search admin searches with an unknown filter
        Failure/Error: DatabaseCleaner.clean
   
        ActiveRecord::StatementInvalid:
          PG::TRDeadlockDetected: ERROR:  deadlock detected
          DETAIL:  Process 12270 waits for AccessExclusiveLock on relation 16412 of database 16386; blocked by process 12192.
          Process 12192 waits for AccessShareLock on relation 16400 of database 16386; blocked by process 12270.
          HINT:  See server log for query details.
          : TRUNCATE TABLE "public"."blog_posts", "public"."series", "public"."countries", "public"."log_entries", "public"."payments", "public"."product_meta_tags", "public"."customers", "public"."products", "public"."orders", "public"."line_items" RESTART IDENTITY CASCADE;
        # ./spec/support/database_cleaner.rb:19:in `block (2 levels) in <top (required)>'
        # ------------------
        # --- Caused by: ---
        # PG::TRDeadlockDetected:
        #   ERROR:  deadlock detected
        #   DETAIL:  Process 12270 waits for AccessExclusiveLock on relation 16412 of database 16386; blocked by process 12192.
        #   Process 12192 waits for AccessShareLock on relation 16400 of database 16386; blocked by process 12270.
        #   HINT:  See server log for query details.
        #   ./spec/support/database_cleaner.rb:19:in `block (2 levels) in <top (required)>'
   
   Finished in 29.41 seconds (files took 3.65 seconds to load)
   418 examples, 1 failure
   ```
   
   This may or may not be related to `DatabaseCleaner`. As an attempt to
   fix it, I'm trying this configuration, copied straight from their
   documentation at https://github.com/DatabaseCleaner/database_cleaner/blob/v1.7.0/README.markdown

   

   pablobm committed Dec 25, 2019
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   7855f74 View commit details

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