diff --git a/activesupport/test/gzip_test.rb b/activesupport/test/gzip_test.rb
new file mode 100644
index 0000000000000..2a24c0bd0d046
--- /dev/null
+++ b/activesupport/test/gzip_test.rb
@@ -0,0 +1,7 @@
+require 'abstract_unit'
+
+class GzipTest < Test::Unit::TestCase
+  def test_compress_should_decompress_to_the_same_value
+    assert_equal "Hello World", ActiveSupport::Gzip.decompress(ActiveSupport::Gzip.compress("Hello World"))
+  end
+end
\ No newline at end of file