diff --git a/dnet-ariadneplus-graphdb-publisher/pom.xml b/dnet-ariadneplus-graphdb-publisher/pom.xml
index 62f32e4..6e0d310 100644
--- a/dnet-ariadneplus-graphdb-publisher/pom.xml
+++ b/dnet-ariadneplus-graphdb-publisher/pom.xml
@@ -127,6 +127,13 @@
               <artifactId>elasticsearch-rest-client</artifactId>
               <version>7.4.2</version>
           </dependency>
+		<dependency>
+			<groupId>org.skyscreamer</groupId>
+			<artifactId>jsonassert</artifactId>
+			<version>1.5.0</version>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 
 	<build>
diff --git a/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/elasticsearch/IndexedJsonTest.java b/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/elasticsearch/IndexedJsonTest.java
new file mode 100644
index 0000000..f5151a0
--- /dev/null
+++ b/dnet-ariadneplus-graphdb-publisher/test/java/eu/dnetlib/ariadneplus/elasticsearch/IndexedJsonTest.java
@@ -0,0 +1,29 @@
+package eu.dnetlib.ariadneplus.elasticsearch;
+
+import org.apache.commons.io.IOUtils;
+import org.json.JSONException;
+import org.junit.Test;
+import org.skyscreamer.jsonassert.JSONAssert;
+import org.springframework.core.io.ClassPathResource;
+
+import java.io.IOException;
+
+public class IndexedJsonTest {
+
+    @Test
+    public void testSimple() throws JSONException {
+        String old = getJSONResult("eu/dnetlib/ariadneplus/elasticsearch/old.json");
+        String the_new = getJSONResult("eu/dnetlib/ariadneplus/elasticsearch/new.json");
+        JSONAssert.assertEquals(old, the_new, false); // Pass
+        //JSONAssert.assertEquals(old, the_new, true); // Fail
+    }
+
+    private String getJSONResult(String s) {
+        try {
+            final ClassPathResource resource = new ClassPathResource(s);
+            return IOUtils.toString(resource.getInputStream(), "UTF-8");
+        }catch(IOException e){
+            return null;
+        }
+    }
+}
diff --git a/dnet-ariadneplus-graphdb-publisher/test/resources/eu/dnetlib/ariadneplus/elasticsearch/new.json b/dnet-ariadneplus-graphdb-publisher/test/resources/eu/dnetlib/ariadneplus/elasticsearch/new.json
new file mode 100644
index 0000000..9443beb
--- /dev/null
+++ b/dnet-ariadneplus-graphdb-publisher/test/resources/eu/dnetlib/ariadneplus/elasticsearch/new.json
@@ -0,0 +1,162 @@
+{
+    "aatSubjects": [
+      {
+        "id": "",
+        "label": "",
+        "lang": ""
+      }
+    ],
+    "accessPolicy": "",
+    "accessRights": "",
+    "archaeologicalResourceType": {
+      "id": 0,
+      "name": ""
+    },
+    "contributor": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "creator": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "derivedSubject": [
+      {
+        "prefLabel": "",
+        "source": ""
+      }
+    ],
+    "description": "",
+    "distribution": [
+      {
+        "accessURL": "",
+        "description": "",
+        "issued": "",
+        "modified": "",
+        "publisher": [
+          {
+            "email": "",
+            "name": "",
+            "phone": "",
+            "type": ""
+          }
+        ],
+        "title": ""
+      }
+    ],
+    "publisher": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "title": "",
+    "hasItemMetadataStructure": [
+      {
+        "characterSet": ""
+      }
+    ],
+    "hasMetadataRecord": [
+      {
+        "conformsTo": [
+          {
+            "characterSet": "",
+            "description": ""
+          }
+        ],
+        "xmlDoc": ""
+      }
+    ],
+    "identifier": "",
+    "isPartOf": [
+      ""
+    ],
+    "issued": "",
+    "keyword": [
+      ""
+    ],
+    "landingPage": "",
+    "language": "",
+    "legalResponsible": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "modified": "",
+    "nativeSubject": [
+      {
+        "prefLabel": "",
+        "rdfAbout": ""
+      }
+    ],
+    "originalId": "580969",
+    "owner": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "resourceType": "",
+    "scientificResponsible": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "spatial": [
+      {
+        "address": "",
+        "coordinateSystem": "",
+        "country": "",
+        "location": {
+          "lat": 0.0,
+          "lon": 0.0
+        },
+        "placeName": "",
+        "postcode": ""
+      }
+    ],
+    "technicalResponsible": [
+      {
+        "email": "",
+        "name": "",
+        "phone": "",
+        "type": ""
+      }
+    ],
+    "temporal": [
+      {
+        "from": "",
+        "periodName": "",
+        "until": "",
+        "uri": ""
+      }
+    ],
+    "accrualPeriodicity": "",
+    "audience": "",
+    "contactPoint": "",
+    "extent": "",
+    "providerId": "",
+    "packageId": "",
+    "placeName": "",
+    "postcode": "",
+    "rdfAbout": "",
+    "rights": ""
+  }
\ No newline at end of file
diff --git a/dnet-ariadneplus-graphdb-publisher/test/resources/eu/dnetlib/ariadneplus/elasticsearch/old.json b/dnet-ariadneplus-graphdb-publisher/test/resources/eu/dnetlib/ariadneplus/elasticsearch/old.json
new file mode 100644
index 0000000..b986baf
--- /dev/null
+++ b/dnet-ariadneplus-graphdb-publisher/test/resources/eu/dnetlib/ariadneplus/elasticsearch/old.json
@@ -0,0 +1,57 @@
+{
+    "publisher": [
+      {
+        "type": "",
+        "name": ""
+      }
+    ],
+    "identifier": "",
+    "description": "",
+    "language": "",
+    "title": "",
+    "archaeologicalResourceType": {
+      "id": 0,
+      "name": ""
+    },
+    "issued": "",
+    "temporal": [
+      {
+        "from": "",
+        "until": ""
+      }
+    ],
+    "isPartOf": [
+      ""
+    ],
+    "originalId": "580969",
+    "modified": "",
+    "accessRights": "",
+    "accessPolicy": "",
+    "resourceType": "",
+    "providerId": "",
+    "packageId": "",
+    "spatial": [
+      {
+        "placeName": "",
+        "country": "",
+        "location": {
+          "lat": 0.0,
+          "lon": 0.0
+        },
+        "coordinateSystem": ""
+      }
+    ],
+    "contributor": [
+      {
+        "type": "",
+        "name": ""
+      }
+    ],
+    "landingPage": "",
+    "nativeSubject": [
+      {
+        "prefLabel": ""
+      }
+    ]
+  }
+}
\ No newline at end of file