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diff --git a/bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestBinaryMemory.java b/bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestBinaryMemory.java
new file mode 100644
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+++ b/bundles/org.simantics.databoard/testcases/org/simantics/databoard/tests/TestBinaryMemory.java
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+/*******************************************************************************
+ *  Copyright (c) 2010 Association for Decentralized Information Management in
+ *  Industry THTH ry.
+ *  All rights reserved. This program and the accompanying materials
+ *  are made available under the terms of the Eclipse Public License v1.0
+ *  which accompanies this distribution, and is available at
+ *  http://www.eclipse.org/legal/epl-v10.html
+ *
+ *  Contributors:
+ *      VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.databoard.tests;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import junit.framework.TestCase;
+
+import org.simantics.databoard.util.binary.BinaryMemory;
+import org.simantics.databoard.util.binary.BinaryReadable;
+import org.simantics.databoard.util.binary.BinaryWriteable;
+import org.simantics.databoard.util.binary.RandomAccessBinary;
+import org.simantics.databoard.util.binary.RandomAccessBinary.ByteSide;
+
+public class TestBinaryMemory extends TestCase {
+
+	public static final int ITERATIONS = 50;
+	RandomAccessBinary file;
+	
+	public void setUp() throws Exception {
+		file = new BinaryMemory(4096);
+	}
+	
+	public void tearDown() throws Exception {
+		file.close();
+	}
+	
+	public void testInsertRemove()
+	throws IOException
+	{
+		// Write 4 MB file
+		for (int i=0; i<1024*1024; i++)
+		{
+			file.writeInt(i ^0x53);
+		}
+		file.flush();
+
+		int iterCount = 16;
+		long totInsertTime = 0;
+		long totRemoveTime = 0;
+		
+		for (int iter=0; iter<iterCount; iter++) {
+		// Verify content
+		// 1. half
+		file.position(0L);
+		for (int i=0; i<1024*1024; i++)
+			assertEquals(i^0x53, file.readInt());
+		
+		// Add 256 kb at 2MB
+		System.gc();
+		long startTime = System.currentTimeMillis();
+		file.position(512*1024*4L);
+		file.insertBytes(256*1024, ByteSide.Left);
+		long elapsedTime = System.currentTimeMillis() - startTime;
+		totInsertTime += elapsedTime;
+		System.out.println("Insert 256kb in front of 2MB, time: "+elapsedTime);
+		
+		// Verify file size
+		assertEquals(4*1024*1024 + 256*1024, file.length()); 
+		
+		// Verify content
+		// 1. half
+		file.position(0);
+		for (int i=0; i<512*1024; i++)
+			assertEquals(i^0x53, file.readInt());
+		// 2. half
+		file.position(512*1024*4+256*1024);
+		for (int i=512*1024; i<1024*1024; i++)
+			assertEquals(i^0x53, file.readInt());
+
+		// Remove content
+		System.gc();
+		startTime = System.currentTimeMillis();
+		file.position(512*1024*4);
+		file.removeBytes(256*1024, ByteSide.Left);
+		elapsedTime = System.currentTimeMillis() - startTime;
+		totRemoveTime += elapsedTime;
+		System.out.println("remove 256kb in front of 2,25MB, time: "+elapsedTime);
+		
+		// Verify file size
+		assertEquals(4*1024*1024, file.length());
+		
+		// Verify content
+		// 1. half
+		file.position(0);
+		for (int i=0; i<1024*1024; i++)
+			assertEquals(i^0x53, file.readInt());
+		}
+
+		System.out.println("Average insert time: " + totInsertTime / iterCount);
+		System.out.println("Average remove time: " + totRemoveTime / iterCount);
+	}
+	
+	public void testWriteRead() 
+	throws FileNotFoundException, IOException 
+	{		
+		long time4 = measureWrite(file);
+		System.out.println();
+		System.out.println("Write Time : "+time4);
+
+		file.flush();
+		file.position(0);
+		
+		time4 = measureRead(file);				
+		System.out.println("Read Time : "+time4);
+	}
+	
+	static long measureWrite(BinaryWriteable write) 
+	throws IOException
+	{		
+		System.gc();
+		byte[] data = new byte[1024];
+		for (int i=0; i<data.length; i++)
+			data[i] = (byte) i;
+		
+		long startTime = System.currentTimeMillis();		
+		for (int iter=0; iter<ITERATIONS; iter++)
+		{
+			if (iter % 10==0) System.out.print(".");
+			for (int i=0; i<256; i++)
+				write.write((byte)i);
+			for (int i=0; i<256; i++)
+				write.writeDouble(i);
+			for (int i=0; i<256; i++)
+				write.writeFloat(i);
+			for (int i=0; i<256; i++)
+				write.writeInt(i);
+			for (int i=0; i<256; i++)
+				write.writeShort((short)i);
+			write.write(data);			
+		}		
+		write.flush();
+		long elapsedTime = System.currentTimeMillis() - startTime;		
+		
+		return elapsedTime;
+	}
+	
+	static long measureRead(BinaryReadable read) 
+	throws IOException
+	{		
+		System.gc();
+		byte[] data = new byte[1024];
+		
+		long startTime = System.currentTimeMillis();		
+		for (int iter=0; iter<ITERATIONS; iter++)
+		{
+			if (iter % 10==0) System.out.print(".");
+			for (int i=0; i<256; i++) 
+				assertEquals((byte) i, read.readByte());
+			for (int i=0; i<256; i++)
+				assertEquals((double) i, read.readDouble());
+			for (int i=0; i<256; i++)
+				assertEquals((float) i, read.readFloat());
+			for (int i=0; i<256; i++)
+				assertEquals((int) i, read.readInt());
+			for (int i=0; i<256; i++)
+				assertEquals((short) i, read.readShort());
+			read.readFully(data);
+			for (int i=0; i<data.length; i++)
+				assertEquals(data[i], (byte) i);
+		}		
+		long elapsedTime = System.currentTimeMillis() - startTime;
+		
+		return elapsedTime;
+	}
+	
+}
+