Seperate unit and integration tests.

This makes it easier to re-use the integration tests in a seperate gem that
optimizes parts of liquid with a native implementation.

test/integration/hash_ordering_test.rb

@@ -0,0 +1,25 @@
+require 'test_helper'
+
+module MoneyFilter
+  def money(input)
+    sprintf(' %d$ ', input)
+  end
+end
+
+module CanadianMoneyFilter
+  def money(input)
+    sprintf(' %d$ CAD ', input)
+  end
+end
+
+class HashOrderingTest < Test::Unit::TestCase
+  include Liquid
+
+ def test_global_register_order
+    Template.register_filter(MoneyFilter)
+    Template.register_filter(CanadianMoneyFilter)
+
+    assert_equal " 1000$ CAD ", Template.parse("{{1000 | money}}").render(nil, nil)
+ end
+
+end