--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/TestHelper.java	Mon Jul 01 20:58:32 2013 +0200
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2012, 2013, 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.dsl.test;
+
+import java.util.*;
+
+import com.oracle.truffle.api.*;
+import com.oracle.truffle.api.dsl.*;
+import com.oracle.truffle.api.dsl.test.NodeContainerTest.BuiltinNode;
+import com.oracle.truffle.api.dsl.test.TypeSystemTest.ArgumentNode;
+import com.oracle.truffle.api.dsl.test.TypeSystemTest.ChildrenNode;
+import com.oracle.truffle.api.dsl.test.TypeSystemTest.TestArguments;
+import com.oracle.truffle.api.dsl.test.TypeSystemTest.TestRootNode;
+import com.oracle.truffle.api.dsl.test.TypeSystemTest.ValueNode;
+
+/**
+ * Utility class to provide some test helper functions.
+ */
+class TestHelper {
+
+    private static ArgumentNode[] arguments(int count) {
+        ArgumentNode[] nodes = new ArgumentNode[count];
+        for (int i = 0; i < nodes.length; i++) {
+            nodes[i] = new ArgumentNode(i);
+        }
+        return nodes;
+    }
+
+    static <E extends ValueNode> E createNode(NodeFactory<E> factory, Object... constants) {
+        ArgumentNode[] argumentNodes = arguments(factory.getExecutionSignature().size());
+
+        List<Object> argumentList = new ArrayList<>();
+        argumentList.addAll(Arrays.asList(constants));
+        if (ChildrenNode.class.isAssignableFrom(factory.getNodeClass()) || BuiltinNode.class.isAssignableFrom(factory.getNodeClass())) {
+            argumentList.add(argumentNodes);
+        } else {
+            argumentList.addAll(Arrays.asList(argumentNodes));
+        }
+        return factory.createNode(argumentList.toArray(new Object[argumentList.size()]));
+    }
+
+    static <E extends ValueNode> TestRootNode<E> createRoot(NodeFactory<E> factory, Object... constants) {
+        return new TestRootNode<>(createNode(factory, constants));
+    }
+
+    static CallTarget createCallTarget(ValueNode node) {
+        return createCallTarget(new TestRootNode<>(node));
+    }
+
+    static CallTarget createCallTarget(TestRootNode<? extends ValueNode> node) {
+        return Truffle.getRuntime().createCallTarget(node);
+    }
+
+    static <E> Object executeWith(TestRootNode<? extends ValueNode> node, Object... values) {
+        return createCallTarget(node).call(new TestArguments(values));
+    }
+
+}