fix label adder

skip step if no entry was created.

src/main/Enricher.kt

@@ -70,7 +70,10 @@ class Enricher(properties: Properties, private val log: Logger) {
                     else -> log.error("Unknown action $action for merger.")
                 }
                 if (entry.value.labels) {
-                    val id = result["@id"] as String? ?: result["id"] as String
+                    val id = result[entry.key] as String?
+                    if (id == null) {
+                        continue@actionLoop
+                    }
                     val provider = providers.getProvider(id)
                     when (provider.providerSlug) {
                         "GND" -> {

src/test/kotlin/Tests.kt

@@ -26,6 +26,14 @@ import java.nio.file.Path
 
 class Tests {
     private val log = LogManager.getLogger("EnricherService")
+    private val properties = KafkaProperties(log).appProperties
+    private val enricher = Enricher(properties, log)
+    private val parser = JsonParser(log)
+    private val viaf = ElasticIndex(properties.getProperty("elastic.search.viaf"), properties, log)
+    private val gnd = ElasticIndex(properties.getProperty("elastic.search.gnd"), properties, log)
+    private val wikidata = ElasticIndex(properties.getProperty("elastic.search.wikidata"), properties, log)
+    private val dbpedia = ElasticIndex(properties.getProperty("elastic.search.dbpedia"), properties, log)
+
     private val path = "/home/jonas/projects/java/kafka-streams-enricher/src/test/resources"
 
     private fun loadData(fileName: String): String {
@@ -42,6 +50,4 @@ class Tests {
         val mergeConfiguration = MergeConfiguration(log)
         Assert.assertEquals("", mergeConfiguration.dataModel)
     }
-
-
 }
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