1 files changed, 21 insertions, 0 deletions
diff --git a/actionpack/test/dispatch/rack_cache_test.rb b/actionpack/test/dispatch/rack_cache_test.rb
new file mode 100644
index 0000000000..79d8a64d29
--- /dev/null
+++ b/actionpack/test/dispatch/rack_cache_test.rb
@@ -0,0 +1,21 @@
+require 'abstract_unit'
+require 'action_dispatch/http/rack_cache'
+
+class RackCacheMetaStoreTest < ActiveSupport::TestCase
+  class ReadWriteHash < ::Hash
+    alias :read  :[]
+    alias :write :[]=
+  end
+
+  setup do
+    @store = ActionDispatch::RailsMetaStore.new(ReadWriteHash.new)
+  end
+
+  test "stuff is deep duped" do
+    @store.write(:foo, { :bar => :original })
+    hash = @store.read(:foo)
+    hash[:bar] = :changed
+    hash = @store.read(:foo)
+    assert_equal :original, hash[:bar]
+  end
+end