--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.codegen.test/src/com/oracle/truffle/api/codegen/test/TypeSystemTest.java	Tue Mar 12 11:38:24 2013 +0100
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.oracle.truffle.api.codegen.test;
+
+import com.oracle.truffle.api.codegen.*;
+import com.oracle.truffle.api.codegen.test.RuntimeStringTest.RuntimeString;
+import com.oracle.truffle.api.frame.*;
+import com.oracle.truffle.api.nodes.*;
+
+public class TypeSystemTest {
+
+    @TypeSystem({int.class, RuntimeString.class})
+    static class SimpleTypes {
+    }
+
+    @TypeSystemReference(SimpleTypes.class)
+    abstract static class ValueNode extends Node {
+
+        int executeInt() throws UnexpectedResultException {
+            return SimpleTypesGen.SIMPLETYPES.expectInteger(execute());
+        }
+
+        RuntimeString executeString() {
+            return new RuntimeString(execute().toString());
+        }
+
+        @SuppressWarnings("static-method")
+        final long executeSpecial() {
+            return 42L;
+        }
+
+        abstract Object execute();
+
+    }
+
+    @TypeSystemReference(SimpleTypes.class)
+    static class TestRootNode extends RootNode {
+
+        @Child private ValueNode node;
+
+        public TestRootNode(ValueNode node) {
+            this.node = adoptChild(node);
+        }
+
+        @Override
+        public Object execute(VirtualFrame frame) {
+            return node.execute();
+        }
+    }
+
+}