1 files changed, 10 insertions, 11 deletions
diff --git a/activesupport/lib/active_support/testing/isolation.rb b/activesupport/lib/active_support/testing/isolation.rb
index d70d971538..9c52ae7768 100644
--- a/activesupport/lib/active_support/testing/isolation.rb
+++ b/activesupport/lib/active_support/testing/isolation.rb
@@ -40,6 +40,10 @@ module ActiveSupport
       def method_missing(name, *args)
         @calls << [name, args]
       end
+
+      def info_signal
+        Signal.list['INFO']
+      end
     end
 
     module Isolation
@@ -68,16 +72,12 @@ module ActiveSupport
         end
       end
 
-      def run(runner)
-        _run_class_setup
-
-        serialized = run_in_isolation do |isolated_runner|
-          super(isolated_runner)
+      def run
+        serialized = run_in_isolation do
+          super
         end
 
-        retval, proxy = Marshal.load(serialized)
-        proxy.__replay__(runner)
-        retval
+        Marshal.load(serialized)
       end
 
       module Forking
@@ -86,9 +86,8 @@ module ActiveSupport
 
           pid = fork do
             read.close
-            proxy = ProxyTestResult.new
-            retval = yield proxy
-            write.puts [Marshal.dump([retval, proxy])].pack("m")
+            yield
+            write.puts [Marshal.dump(self.dup)].pack("m")
             exit!
           end