diff --git a/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/TestApply.scala b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/TestApply.scala
new file mode 100644
index 0000000000..b78eb978bf
--- /dev/null
+++ b/dhp-workflows/dhp-graph-mapper/src/test/java/eu/dnetlib/dhp/oa/graph/hostedbymap/TestApply.scala
@@ -0,0 +1,134 @@
+package eu.dnetlib.dhp.oa.graph.hostedbymap
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import eu.dnetlib.dhp.oa.graph.hostedbymap.model.EntityInfo
+import eu.dnetlib.dhp.schema.common.ModelConstants
+import eu.dnetlib.dhp.schema.oaf.{Datasource, OpenAccessRoute, Publication}
+import org.apache.spark.SparkConf
+import org.apache.spark.sql.{Dataset, Encoder, Encoders, SparkSession}
+import org.junit.jupiter.api.Assertions.{assertEquals, assertTrue}
+import org.junit.jupiter.api.Test
+
+class TestApply extends java.io.Serializable{
+
+  @Test
+  def testApplyOnResult (): Unit = {
+    val conf = new SparkConf()
+    conf.setMaster("local[*]")
+    conf.set("spark.driver.host", "localhost")
+    val spark: SparkSession =
+      SparkSession
+        .builder()
+        .appName(getClass.getSimpleName)
+        .config(conf)
+        .getOrCreate()
+    val pub = getClass.getResource("publication.json").getPath
+    val hbm = getClass.getResource("preparedInfo.json").getPath
+
+    val mapper:ObjectMapper = new ObjectMapper()
+
+    implicit val mapEncoderDSInfo: Encoder[EntityInfo] = Encoders.bean(classOf[EntityInfo])
+    implicit val mapEncoderPubInfo: Encoder[Publication] = Encoders.bean(classOf[Publication])
+
+
+    val pub_ds :Dataset[Publication] = spark.read.textFile(pub).map(p => mapper.readValue(p, classOf[Publication]))
+    val hbm_ds :Dataset[EntityInfo] = spark.read.textFile(hbm).map(p => mapper.readValue(p, classOf[EntityInfo]))
+
+
+    assertEquals(13, pub_ds.count())
+
+    val ds:Dataset[Publication] = SparkApplyHostedByMapToResult.applyHBtoPubs(hbm_ds, pub_ds)
+
+    assertEquals(13,  ds.count)
+
+    val temp: Dataset[(Publication, Publication)] = pub_ds.joinWith(ds, pub_ds.col("id").equalTo(ds.col("id")), "left")
+    assertEquals(13, temp.count())
+    temp.foreach(t2 => {
+      val pb : Publication = t2._1
+      val pa : Publication = t2._2
+      assertEquals(1, pa.getInstance().size())
+      assertEquals(1, pb.getInstance().size())
+      assertTrue(t2._1.getId.equals(t2._2.getId))
+      if(pb.getId.equals("50|4dc99724cf04::ed1ba83e1add6ce292433729acd8b0d9")){
+        assertTrue(pa.getInstance().get(0).getHostedby.getKey.equals("10|issn___print::e4b6d6d978f67520f6f37679a98c5735"))
+        assertTrue(pa.getInstance().get(0).getHostedby.getValue.equals("Academic Therapy"))
+        assertTrue(pa.getInstance().get(0).getAccessright.getClassid.equals("OPEN"))
+        assertTrue(pa.getInstance().get(0).getAccessright.getClassname.equals("Open Access"))
+        assertTrue(pa.getInstance().get(0).getAccessright.getOpenAccessRoute.equals(OpenAccessRoute.hybrid))
+
+
+        assertTrue(pb.getInstance().get(0).getHostedby.getKey.equals("10|openaire____::0b74b6a356bbf23c245f9ae9a748745c"))
+        assertTrue(pb.getInstance().get(0).getHostedby.getValue.equals("Revistas de investigación Universidad Nacional Mayor de San Marcos"))
+        assertTrue(pb.getInstance().get(0).getAccessright.getClassname.equals("Open Access"))
+        assertTrue(pb.getInstance().get(0).getAccessright.getClassid.equals("OPEN"))
+        assertTrue(pb.getInstance().get(0).getAccessright.getOpenAccessRoute == null)
+
+      }else{
+        assertTrue(pa.getInstance().get(0).getHostedby.getKey.equals(pb.getInstance().get(0).getHostedby.getKey))
+        assertTrue(pa.getInstance().get(0).getHostedby.getValue.equals(pb.getInstance().get(0).getHostedby.getValue))
+        assertTrue(pa.getInstance().get(0).getAccessright.getClassid.equals(pb.getInstance().get(0).getAccessright.getClassid))
+        assertTrue(pa.getInstance().get(0).getAccessright.getClassname.equals(pb.getInstance().get(0).getAccessright.getClassname))
+        assertTrue(pa.getInstance().get(0).getAccessright.getOpenAccessRoute == pb.getInstance().get(0).getAccessright.getOpenAccessRoute)
+
+      }
+    })
+
+    spark.close()
+  }
+
+
+  @Test
+  def testApplyOnDatasource():Unit = {
+    val conf = new SparkConf()
+    conf.setMaster("local[*]")
+    conf.set("spark.driver.host", "localhost")
+    val spark: SparkSession =
+      SparkSession
+        .builder()
+        .appName(getClass.getSimpleName)
+        .config(conf)
+        .getOrCreate()
+    val dats = getClass.getResource("datasource.json").getPath
+    val hbm = getClass.getResource("preparedInfo2.json").getPath
+
+    val mapper:ObjectMapper = new ObjectMapper()
+
+    implicit val mapEncoderDSInfo: Encoder[EntityInfo] = Encoders.bean(classOf[EntityInfo])
+    implicit val mapEncoderPubInfo: Encoder[Datasource] = Encoders.bean(classOf[Datasource])
+
+
+    val dats_ds :Dataset[Datasource] = spark.read.textFile(dats).map(p => mapper.readValue(p, classOf[Datasource]))
+    val hbm_ds :Dataset[EntityInfo] = spark.read.textFile(hbm).map(p => mapper.readValue(p, classOf[EntityInfo]))
+
+
+    assertEquals(10, dats_ds.count())
+
+    val ds:Dataset[Datasource] = SparkApplyHostedByMapToDatasource.applyHBtoDats(hbm_ds, dats_ds)
+
+    assertEquals(10,  ds.count)
+
+    val temp: Dataset[(Datasource, Datasource)] = dats_ds.joinWith(ds, dats_ds.col("id").equalTo(ds.col("id")), "left")
+    assertEquals(10, temp.count())
+    temp.foreach(t2 => {
+      val pb : Datasource = t2._1
+      val pa : Datasource = t2._2
+      assertTrue(t2._1.getId.equals(t2._2.getId))
+      if(pb.getId.equals("10|doajarticles::0ab37b7620eb9a73ac95d3ca4320c97d")){
+        assertTrue(pa.getOpenairecompatibility().getClassid.equals("hostedBy"))
+        assertTrue(pa.getOpenairecompatibility().getClassname.equals("collected from a compatible aggregator"))
+
+        assertTrue(pb.getOpenairecompatibility().getClassid.equals(ModelConstants.UNKNOWN))
+
+
+      }else{
+        assertTrue(pa.getOpenairecompatibility().getClassid.equals(pb.getOpenairecompatibility.getClassid))
+        assertTrue(pa.getOpenairecompatibility().getClassname.equals(pb.getOpenairecompatibility.getClassid))
+
+      }
+    })
+
+    spark.close()
+
+  }
+
+}