Merge pull request rails#51718 from rails/mt-rails

Don't mess with Minitest unless RAILS_ENV is set

Author: tenderlove

railties/lib/minitest/rails_plugin.rb

@@ -109,6 +109,9 @@ def self.plugin_rails_options(opts, options)
   # Owes great inspiration to test runner trailblazers like RSpec,
   # minitest-reporters, maxitest, and others.
   def self.plugin_rails_init(options)
+    # Don't mess with Minitest unless RAILS_ENV is set
+    return unless ENV["RAILS_ENV"]
+
     unless options[:full_backtrace]
       # Plugin can run without Rails loaded, check before filtering.
       if ::Rails.respond_to?(:backtrace_cleaner)