1 files changed, 1 insertions, 39 deletions
diff --git a/activesupport/lib/active_support/testing/isolation.rb b/activesupport/lib/active_support/testing/isolation.rb
index 6b29ba4c10..5d5de4798d 100644
--- a/activesupport/lib/active_support/testing/isolation.rb
+++ b/activesupport/lib/active_support/testing/isolation.rb
@@ -38,11 +38,7 @@ module ActiveSupport
       end
 
       def self.included(base)
-        if defined?(::MiniTest) && base < ::MiniTest::Unit::TestCase
-          base.send :include, MiniTest
-        elsif defined?(Test::Unit)
-          base.send :include, TestUnit
-        end
+        base.send :include, MiniTest
       end
 
       def _run_class_setup      # class setup method should only happen in parent
@@ -52,30 +48,6 @@ module ActiveSupport
         end
       end
 
-      module TestUnit
-        def run(result)
-          _run_class_setup
-
-          yield(Test::Unit::TestCase::STARTED, name)
-
-          @_result = result
-
-          serialized = run_in_isolation do |proxy|
-            begin
-              super(proxy) { }
-            rescue Exception => e
-              proxy.add_error(Test::Unit::Error.new(name, e))
-            end
-          end
-
-          retval, proxy = Marshal.load(serialized)
-          proxy.__replay__(@_result)
-
-          yield(Test::Unit::TestCase::FINISHED, name)
-          retval
-        end
-      end
-
       module MiniTest
         def run(runner)
           _run_class_setup
@@ -145,13 +117,3 @@ module ActiveSupport
     end
   end
 end
-
-# Only in subprocess for windows / jruby.
-if ENV['ISOLATION_TEST']
-  require "test/unit/collector/objectspace"
-  class Test::Unit::Collector::ObjectSpace
-    def include?(test)
-      super && test.method_name == ENV['ISOLATION_TEST']
-    end
-  end
-end