--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.sl.test/src/com/oracle/truffle/sl/test/AbstractTest.java	Fri Dec 21 10:45:37 2012 -0800
@@ -0,0 +1,64 @@
+/*
+ * 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.sl.test;
+
+import java.io.*;
+
+import org.junit.*;
+
+import com.oracle.truffle.sl.*;
+
+public class AbstractTest {
+    public static final int REPEATS = 10;
+    private static final String NEWLINE = System.getProperty("line.separator");
+
+    private static String concat(String[] string) {
+        StringBuilder result = new StringBuilder();
+        for (String s : string) {
+            result.append(s).append(NEWLINE);
+        }
+        return result.toString();
+    }
+
+    private static String repeat(String s, int count) {
+        StringBuilder result = new StringBuilder(s.length() * count);
+        for (int i = 0; i < count; i++) {
+            result.append(s);
+        }
+        return result.toString();
+    }
+
+    protected void executeSL(String[] input, String[] expectedOutput, boolean useConsole) {
+        InputStream in = new ByteArrayInputStream(concat(input).getBytes());
+
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        PrintStream printer = new PrintStream(useConsole ? new SplitOutputStream(out, System.err) : out);
+        PrintStream origErr = System.err;
+        System.setErr(printer);
+
+        SimpleLanguage.run(in, printer, REPEATS, true);
+
+        System.setErr(origErr);
+        Assert.assertEquals(repeat(concat(expectedOutput), REPEATS), new String(out.toByteArray()));
+    }
+}