--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/nodes/serial/VariableLengthIntBufferTest.java	Wed Oct 02 15:33:08 2013 +0200
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 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.test.nodes.serial;
+
+import java.nio.*;
+
+import org.junit.*;
+
+import com.oracle.truffle.api.nodes.serial.*;
+
+public class VariableLengthIntBufferTest {
+
+    private VariableLengthIntBuffer buf;
+
+    @Before
+    public void setUp() {
+        buf = new VariableLengthIntBuffer(ByteBuffer.allocate(512));
+    }
+
+    @After
+    public void tearDown() {
+        buf = null;
+    }
+
+    @Test
+    public void testPutNull() {
+        buf.put(VariableLengthIntBuffer.NULL);
+        assertBytes(0xFF);
+    }
+
+    @Test
+    public void testPutByteCornerCase0() {
+        buf.put(0x00); // 0
+        assertBytes(0x00);
+    }
+
+    @Test
+    public void testPutByteCornerCase1() {
+        buf.put(0x7F); // 127
+        assertBytes(0x7F);
+    }
+
+    @Test
+    public void testPutByteCornerCase2() {
+        buf.put(0x3FFF_FFFF);
+        assertBytes(0xBF, 0xFF, 0xFF, 0xFF);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testPutByteCornerCase3() {
+        buf.put(0x4000_0000); // out of encodeable
+    }
+
+    @Test
+    public void testGetNull() {
+        create(0xFF);
+        assertGet(VariableLengthIntBuffer.NULL);
+    }
+
+    @Test
+    public void testGetCornerCase0() {
+        create(0x00);
+        assertGet(0x00);
+    }
+
+    @Test
+    public void testGetCornerCase1() {
+        create(0x7F);
+        assertGet(0x7F);
+    }
+
+    @Test
+    public void testGetCornerCase2() {
+        create(0xBF, 0xFF, 0xFF, 0xFF);
+        assertGet(0x3FFF_FFFF);
+    }
+
+    @Test(expected = AssertionError.class)
+    public void testGetCornerCase3() {
+        create(0xFF, 0xFF, 0xFF, 0xFF);
+        assertGet(0x0);
+    }
+
+    private void create(int... bytes) {
+        byte[] convBytes = new byte[bytes.length];
+        for (int i = 0; i < bytes.length; i++) {
+            convBytes[i] = (byte) bytes[i];
+        }
+        buf = new VariableLengthIntBuffer(convBytes);
+    }
+
+    private void assertGet(int expected) {
+        Assert.assertEquals(expected, buf.get());
+    }
+
+    private void assertBytes(int... expectedBytes) {
+        byte[] actualBytes = buf.getBytes();
+        Assert.assertEquals(expectedBytes.length, actualBytes.length);
+        for (int i = 0; i < expectedBytes.length; i++) {
+            Assert.assertTrue(actualBytes[i] == (byte) expectedBytes[i]);
+        }
+    }
+
+}