adding test (and solving bugs) for the serialization of extensions.

Author: julsal

src/main/java/org/lambda3/text/simplification/discourse/model/serializer/ExtensionsDeserializer.java

@@ -31,7 +31,6 @@
 import org.lambda3.text.simplification.discourse.model.Extensible;
 
 import java.io.IOException;
-import java.lang.reflect.Array;
 import java.util.*;
 
 public class ExtensionsDeserializer extends StdDeserializer<Map> {
@@ -54,21 +53,31 @@ public Map deserialize(JsonParser parser, DeserializationContext deserialization
             try {
                 Class<?> clazz = Class.forName(en.get("class").asText());
                 String key = en.has("key") ? en.get("key").asText() : null;
-                JsonParser cjp = en.get("content").traverse();
-                Class<?> contentClazz = clazz;
+                JsonNode nodeContent = en.get("content");
+
                 Object mapKey;
+                Object content;
+
+                if (nodeContent.isArray()) {
+                    content = new LinkedList<>();
+                    for (JsonNode aNodeContent : nodeContent) {
+                        JsonParser panc = aNodeContent.traverse();
+                        panc.nextToken();
+                        Object co = deserializationContext.readValue(panc, clazz);
+                        ((List) content).add(co);
+                    }
+                } else {
+                    JsonParser cjp = nodeContent.traverse();
+                    cjp.nextToken();
+                    content = deserializationContext.readValue(cjp, clazz);
+                }
 
                 if (key == null) {
                     mapKey = clazz;
                 } else {
                     mapKey = new Extensible.Key(clazz, key);
-                    if (key.equals(Extensible.LIST_KEY)) {
-                        contentClazz = ArrayList.class;
-                    }
                 }
 
-                cjp.nextToken();
-                Object content = deserializationContext.readValue(cjp, contentClazz);
                 map.put(mapKey, content);
 
             } catch (ClassNotFoundException e) {

src/test/java/org/lambda3/text/simplification/discourse/ExtensibleTest.java

@@ -85,7 +85,8 @@ public void testListExtension() {
     public void testDeSerialization() throws IOException {
         Extensible e = new SimpleExtensible();
         Arrays.asList("Switzerland", "Brazil", "Germany").forEach(e::addListExtension);
-        e.addExtension(new LinkedContext("bla bla", RelationType.UNKNOWN));
+        e.addListExtension(new LinkedContext("bla bla", RelationType.UNKNOWN));
+        e.addListExtension(new LinkedContext("bla bla 2", RelationType.UNKNOWN));
         e.addExtension("key", 7);
 
         File temp = File.createTempFile("ext-discourse-simplification", ".json");