Fix deserialization of null values to result in JsonValue.NULL

src/main/java/com/fasterxml/jackson/datatype/jsr353/JsonValueDeserializer.java

@@ -1,7 +1,9 @@
 package com.fasterxml.jackson.datatype.jsr353;
 
+import com.fasterxml.jackson.databind.JsonMappingException;
 import java.io.IOException;
 
+import javax.json.Json;
 import javax.json.JsonArrayBuilder;
 import javax.json.JsonBuilderFactory;
 import javax.json.JsonObjectBuilder;
@@ -36,6 +38,11 @@ public JsonValue deserialize(JsonParser p, DeserializationContext ctxt)
  }
  }
 
+ @Override
+ public Object getNullValue(final DeserializationContext ctxt){
+ return JsonValue.NULL;
+ }
+
  @Override
  public Object deserializeWithType(JsonParser p, DeserializationContext ctxt,
  TypeDeserializer typeDeser)

src/test/java/com/fasterxml/jackson/datatype/jsr353/SimpleDeserializeTest.java

@@ -1,5 +1,6 @@
 package com.fasterxml.jackson.datatype.jsr353;
 
+import com.fasterxml.jackson.databind.json.JsonMapper;
 import javax.json.*;
 import javax.json.JsonValue.ValueType;
 
@@ -100,4 +101,19 @@ public void testBinaryNode() throws Exception
  String str = ((JsonString) v2).getString();
  assertEquals("AA==", str); // single zero byte
  }
+
+ public void testNullNode() throws Exception
+ {
+ final JsonMapper mapper = mapperBuilder().build();
+
+ final String serializedNull = mapper.writeValueAsString(JsonValue.NULL);
+
+ assertEquals("null", serializedNull);
+
+ final JsonValue deserializedNull = mapper.readValue(serializedNull, JsonValue.class);
+
+ assertNotNull(deserializedNull);
+
+ assertEquals(JsonValue.NULL, deserializedNull);
+ }
 }