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Index: gsf.testrunner/src/org/netbeans/modules/gsf/testrunner/api/UnitTestsUsage.java
--- gsf.testrunner/src/org/netbeans/modules/gsf/testrunner/api/UnitTestsUsage.java Base (BASE)
+++ gsf.testrunner/src/org/netbeans/modules/gsf/testrunner/api/UnitTestsUsage.java Locally New
@@ -0,0 +1,91 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 Oracle and/or its affiliates. All rights reserved.
+ *
+ * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
+ * Other names may be trademarks of their respective owners.
+ *
+ * The contents of this file are subject to the terms of either the GNU
+ * General Public License Version 2 only ("GPL") or the Common
+ * Development and Distribution License("CDDL") (collectively, the
+ * "License"). You may not use this file except in compliance with the
+ * License. You can obtain a copy of the License at
+ * http://www.netbeans.org/cddl-gplv2.html
+ * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
+ * specific language governing permissions and limitations under the
+ * License.  When distributing the software, include this License Header
+ * Notice in each file and include the License file at
+ * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the GPL Version 2 section of the License file that
+ * accompanied this code. If applicable, add the following below the
+ * License Header, with the fields enclosed by brackets [] replaced by
+ * your own identifying information:
+ * "Portions Copyrighted [year] [name of copyright owner]"
+ *
+ * If you wish your version of this file to be governed by only the CDDL
+ * or only the GPL Version 2, indicate your decision by adding
+ * "[Contributor] elects to include this software in this distribution
+ * under the [CDDL or GPL Version 2] license." If you do not indicate a
+ * single choice of license, a recipient has the option to distribute
+ * your version of this file under either the CDDL, the GPL Version 2 or
+ * to extend the choice of license to its licensees as provided above.
+ * However, if you add GPL Version 2 code and therefore, elected the GPL
+ * Version 2 license, then the option applies only if the new code is
+ * made subject to such option by the copyright holder.
+ *
+ * Contributor(s):
+ *
+ * Portions Copyrighted 2013 Sun Microsystems, Inc.
+ */
+package org.netbeans.modules.gsf.testrunner.api;
+
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.logging.Level;
+import java.util.logging.LogRecord;
+import java.util.logging.Logger;
+
+/**
+ *
+ * @author theofanis
+ */
+public class UnitTestsUsage {
+    
+    private static UnitTestsUsage INSTANCE;
+    private static HashMap<URI, String> projectsAlreadyLogged = new HashMap<URI, String>();
+
+    private UnitTestsUsage() { }
+    
+    public static UnitTestsUsage getInstance() {
+        if(INSTANCE != null) {
+            return INSTANCE;
+        }
+        return new UnitTestsUsage();
+    }
+    
+    public void logUnitTestUsage(URI projectURI, String unitTestLibrary) {
+        Logger logger = Logger.getLogger("org.netbeans.ui.metrics.unittestslibrary");   // NOI18N
+        LogRecord rec = new LogRecord(Level.INFO, "USG_UNIT_TESTS_LIBRARY"); //NOI18N
+        if (unitTestLibrary.isEmpty()) {
+            return;
+        }
+
+        if (!projectsAlreadyLogged.containsKey(projectURI)) {
+            projectsAlreadyLogged.put(projectURI, unitTestLibrary.toString());
+        } else {
+            String unitTestLibrariesUsed = projectsAlreadyLogged.get(projectURI);
+            if (unitTestLibrariesUsed.equals(unitTestLibrary)) {
+                return;
+            } else {
+                projectsAlreadyLogged.put(projectURI, unitTestLibrary);
+            }
+        }
+        rec.setParameters(new Object[]{unitTestLibrary.toString()});
+        rec.setLoggerName(logger.getName());
+        logger.log(rec);
+    }
+    
+}