diff --git a/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/reader/utils/ESUtilsTest.java b/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/reader/utils/ESUtilsTest.java
index 8ae955c..7cd2288 100644
--- a/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/reader/utils/ESUtilsTest.java
+++ b/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/reader/utils/ESUtilsTest.java
@@ -1,4 +1,14 @@
 package eu.dnetlib.ariadneplus.reader.utils;
 
+import org.junit.Assert;
+import org.junit.Test;
+
 public class ESUtilsTest {
+
+    @Test
+    public void testParseDate(){
+        String date = "2013-03-13";
+        String parsed =  ESUtils.getESFormatDate(date);
+        Assert.assertEquals(date, parsed);
+    }
 }