diff --git a/ttool/src/test/java/avatartranslator/AvatarIntegerExprParsingAndEvaluationTests.java b/ttool/src/test/java/avatartranslator/AvatarIntegerExprParsingAndEvaluationTests.java
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+/**Copyright or (C) or Copr. GET / ENST, Telecom-Paris, Ludovic Apvrille
+ *
+ * ludovic.apvrille AT enst.fr
+ *
+ * This software is a computer program whose purpose is to allow the
+ * edition of TURTLE analysis, design and deployment diagrams, to
+ * allow the generation of RT-LOTOS or Java code from this diagram,
+ * and at last to allow the analysis of formal validation traces
+ * obtained from external tools, e.g. RTL from LAAS-CNRS and CADP
+ * from INRIA Rhone-Alpes.
+ *
+ * This software is governed by the CeCILL  license under French law and
+ * abiding by the rules of distribution of free software.  You can  use,
+ * modify and/ or redistribute the software under the terms of the CeCILL
+ * license as circulated by CEA, CNRS and INRIA at the following URL
+ * "http://www.cecill.info".
+ *
+ * As a counterpart to the access to the source code and  rights to copy,
+ * modify and redistribute granted by the license, users are provided only
+ * with a limited warranty  and the software's author,  the holder of the
+ * economic rights,  and the successive licensors  have only  limited
+ * liability.
+ *
+ * In this respect, the user's attention is drawn to the risks associated
+ * with loading,  using,  modifying and/or developing or reproducing the
+ * software by the user in light of its specific status of free software,
+ * that may mean  that it is complicated to manipulate,  and  that  also
+ * therefore means  that it is reserved for developers  and  experienced
+ * professionals having in-depth computer knowledge. Users are therefore
+ * encouraged to load and test the software's suitability as regards their
+ * requirements in conditions enabling the security of their systems and/or
+ * data to be ensured and,  more generally, to use and operate it in the
+ * same conditions as regards security.
+ *
+ * The fact that you are presently reading this means that you have had
+ * knowledge of the CeCILL license and that you accept its terms.
+ *
+ * /**
+ * Class AvatarGuardTests
+ * Creation: 20/05/2015
+ * @version 1.1 01/07/2015
+ * @author Ludovic APVRILLE, Letitia LI
+ * @see
+ */
+
+package avatartranslator;
+
+import myutil.Conversion;
+import myutil.IntExpressionEvaluator;
+import org.junit.Test;
+import org.junit.*;
+
+import static org.junit.Assert.*;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+
+import java.util.LinkedList;
+import java.util.HashMap;
+import java.util.Vector;
+
+
+import ui.TAttribute;
+import avatartranslator.*;
+
+public class AvatarIntegerExprParsingAndEvaluationTests {
+
+    AvatarGuard res;
+    AvatarBlock block;
+
+    public AvatarIntegerExprParsingAndEvaluationTests () {
+        //  super ("AvatarGuards", false);
+    }
+    @Before
+    public void test () {
+        AvatarSpecification as = new AvatarSpecification("avatarspecification", null);
+
+        block = new AvatarBlock("myblock", as, null);
+        as.addBlock(block);
+        AvatarAttribute x = new AvatarAttribute("x", AvatarType.INTEGER, block, null);
+        block.addAttribute(x);
+        AvatarAttribute y = new AvatarAttribute("y", AvatarType.INTEGER, block, null);
+        block.addAttribute(y);
+        AvatarAttribute z = new AvatarAttribute("z", AvatarType.INTEGER, block, null);
+        block.addAttribute(z);
+
+        x.setInitialValue("10");
+        y.setInitialValue("5");
+        z.setInitialValue("2");
+
+    }
+
+
+    private void testExpr(String command, double expectedResult, boolean expectedBool) {
+
+        AvatarTransition at = new AvatarTransition(block, "at", null);
+        at.addAction(command);
+
+        IntExpressionEvaluator iee = new IntExpressionEvaluator();
+
+        String expr = at.getAction(0).toString();
+        int index = expr.indexOf('=');
+
+        assertTrue(index > -1);
+
+        expr = expr.substring(index+1, expr.length()).trim();
+
+        for(AvatarAttribute aa: block.getAttributes()) {
+            expr = Conversion.putVariableValueInString(AvatarSpecification.ops, expr, aa.getName(), aa.getInitialValue());
+        }
+
+        double result = iee.getResultOf(expr);
+
+        assertTrue((result == expectedResult) == expectedBool);
+    }
+
+    @Test
+    public void testIntExpr(){
+        testExpr("x = x + y", 15.0, true);
+
+        testExpr("x = x + y", 16.0, false);
+
+        testExpr("x = x + x*(y+z)", 80.0, true);
+
+        testExpr("x = x + x*(y+z)/z", 45, true);
+
+        testExpr("x = x + x*(y+z)/(x + z - x)", 45, true);
+
+        testExpr("x = x + x*(y+z)*(x - z)", 570, true);
+
+        //testExpr("x = (x + y)*z", 30, true);
+
+        //testExpr("x = (x + y)*z + (x+z)/z", 36, true);
+
+
+        /*res= AvatarGuard.createFromString(A, "else");
+        assertTrue(res instanceof AvatarGuardElse);*/
+    }
+
+
+
+    public static void main(String[] args){
+        AvatarIntegerExprParsingAndEvaluationTests apt = new AvatarIntegerExprParsingAndEvaluationTests ();
+        //apt.runTest ();
+    }
+}