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-rw-r--r--railties/lib/rails/test_help.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/railties/lib/rails/test_help.rb b/railties/lib/rails/test_help.rb
index 81537d813e..fe198f4d99 100644
--- a/railties/lib/rails/test_help.rb
+++ b/railties/lib/rails/test_help.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
# Make double-sure the RAILS_ENV is not set to production,
# so fixtures aren't loaded into that environment
abort("Abort testing: Your Rails environment is running in production mode!") if Rails.env.production?