Leave all our tests as order_dependent! for now

We're seeing too many failures to believe otherwise.

This reverts commits bc116a55ca,
cbde413df3,
bf0a67931d, and
2440933fe2.

actionmailer/test/abstract_unit.rb

@@ -42,3 +42,8 @@ def jruby_skip(message = '')
 end
 
 require 'mocha/setup' # FIXME: stop using mocha
+
+# FIXME: we have tests that depend on run order, we should fix that and
+# remove this method call.
+require 'active_support/test_case'
+ActiveSupport::TestCase.my_tests_are_order_dependent!

actionpack/test/abstract_unit.rb

@@ -512,3 +512,8 @@ if ActiveSupport::Testing::Isolation.forking_env? && PROCESS_COUNT > 0
   # Use N processes (N defaults to 4)
   Minitest.parallel_executor = ForkingExecutor.new(PROCESS_COUNT)
 end
+
+# FIXME: we have tests that depend on run order, we should fix that and
+# remove this method call.
+require 'active_support/test_case'
+ActiveSupport::TestCase.my_tests_are_order_dependent!

actionview/test/abstract_unit.rb

@@ -340,3 +340,8 @@ def jruby_skip(message = '')
 end
 
 require 'mocha/setup' # FIXME: stop using mocha
+
+# FIXME: we have tests that depend on run order, we should fix that and
+# remove this method call.
+require 'active_support/test_case'
+ActiveSupport::TestCase.my_tests_are_order_dependent!

activemodel/test/cases/helper.rb

@@ -13,3 +13,8 @@ I18n.enforce_available_locales = false
 require 'active_support/testing/autorun'
 
 require 'mocha/setup' # FIXME: stop using mocha
+
+# FIXME: we have tests that depend on run order, we should fix that and
+# remove this method call.
+require 'active_support/test_case'
+ActiveSupport::TestCase.my_tests_are_order_dependent!

activerecord/test/cases/helper.rb

@@ -208,3 +208,8 @@ module InTimeZone
 end
 
 require 'mocha/setup' # FIXME: stop using mocha
+
+# FIXME: we have tests that depend on run order, we should fix that and
+# remove this method call.
+require 'active_support/test_case'
+ActiveSupport::TestCase.my_tests_are_order_dependent!

activesupport/test/abstract_unit.rb

@@ -38,3 +38,8 @@ def jruby_skip(message = '')
 end
 
 require 'mocha/setup' # FIXME: stop using mocha
+
+# FIXME: we have tests that depend on run order, we should fix that and
+# remove this method call.
+require 'active_support/test_case'
+ActiveSupport::TestCase.my_tests_are_order_dependent!

railties/test/abstract_unit.rb

@@ -28,6 +28,10 @@ def jruby_skip(message = '')
 end
 
 class ActiveSupport::TestCase
+  # FIXME: we have tests that depend on run order, we should fix that and
+  # remove this method call.
+  self.my_tests_are_order_dependent!
+
   private
 
   unless defined?(:capture)