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diff --git a/bundles/org.simantics.databoard/scratch/org/simantics/databoard/tests/TestMapAccessorIterator.java b/bundles/org.simantics.databoard/scratch/org/simantics/databoard/tests/TestMapAccessorIterator.java
new file mode 100644
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+++ b/bundles/org.simantics.databoard/scratch/org/simantics/databoard/tests/TestMapAccessorIterator.java
@@ -0,0 +1,68 @@
+/*******************************************************************************
+ * Copyright (c) 2007 VTT Technical Research Centre of Finland and others.
+ * 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.File;
+import java.util.Map;
+import java.util.TreeMap;
+
+import org.simantics.databoard.Accessors;
+import org.simantics.databoard.Bindings;
+import org.simantics.databoard.Datatypes;
+import org.simantics.databoard.accessor.MapAccessor;
+import org.simantics.databoard.accessor.file.FileMapAccessor;
+import org.simantics.databoard.accessor.impl.MapAccessorIterator;
+import org.simantics.databoard.type.MapType;
+
+public class TestMapAccessorIterator {
+	
+	public static void main(String[] args) throws Exception {
+		
+		Map<Integer, Integer> myMap = new TreeMap<Integer, Integer>( Bindings.INTEGER );
+		for (int i=0; i<100; i++) myMap.put(i, i*10);
+		
+		MapAccessor ma = Accessors.getAccessor( Bindings.getBinding(TreeMap.class, Integer.class, Integer.class), myMap);
+		
+		
+		MapAccessorIterator<Double, Integer> iter = new MapAccessorIterator<Double, Integer>(
+				ma, 
+				Bindings.DOUBLE, 0.0, false, 99.0, false,
+				Bindings.INTEGER, 
+				16
+				); 
+		
+		while (iter.next()) {
+			System.out.println("Double: "+iter.keyDouble()+"="+iter.valueDouble());
+			System.out.println("Normal: "+iter.key()+"="+iter.value());
+		}
+
+		
+		FileMapAccessor ma2 = Accessors.createFile( File.createTempFile("delete", ".me"), new MapType(Datatypes.INTEGER, Datatypes.INTEGER) );
+		for (int i=0; i<100; i++) ma2.put(Bindings.INTEGER, i, Bindings.INTEGER, i*10);
+		ma2.flush();
+		
+		iter = new MapAccessorIterator<Double, Integer>(
+				ma2, 
+				Bindings.DOUBLE, 0.0, false, 50.0, true,
+				Bindings.INTEGER, 
+				16
+				); 
+		
+		while (iter.next()) {
+			System.out.println("Double: "+iter.keyDouble()+"="+iter.valueDouble());
+			System.out.println("Normal: "+iter.key()+"="+iter.value());
+		}
+		
+	}
+
+}
+
+ 
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