add a failing test to help with AtomicRef default-typing issues

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/databind/jsontype/PolymorphicViaRefTypeTest.java

@@ -4,6 +4,7 @@
 
 import com.fasterxml.jackson.annotation.JsonSubTypes;
 import com.fasterxml.jackson.annotation.JsonTypeInfo;
+
 import com.fasterxml.jackson.databind.*;
 
 public class PolymorphicViaRefTypeTest extends BaseMapTest
@@ -35,7 +36,7 @@ static class TypeInfoAtomic {
 
     private final ObjectMapper MAPPER = objectMapper();
 
-    public void testOptionalWithAtomic() throws Exception
+    public void testPolymorphicAtomicRefProperty() throws Exception
     {
         TypeInfoAtomic data = new TypeInfoAtomic();
         data.value = new AtomicReference<BaseForAtomic>(new ImplForAtomic(42));

src/test/java/com/fasterxml/jackson/failing/PolymorphicViaRefTypeTest.java

@@ -0,0 +1,34 @@
+package com.fasterxml.jackson.failing;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+import com.fasterxml.jackson.databind.*;
+import com.fasterxml.jackson.databind.ObjectMapper.DefaultTyping;
+
+public class PolymorphicViaRefTypeTest extends BaseMapTest
+{
+    static class AtomicStringWrapper {
+        public AtomicReference<StringWrapper> wrapper;
+
+        protected AtomicStringWrapper() { }
+        public AtomicStringWrapper(String str) {
+            wrapper = new AtomicReference<StringWrapper>(new StringWrapper(str));
+        }
+    }
+    
+    /*
+    /**********************************************************************
+    /* Test methods
+    /**********************************************************************
+     */
+
+    public void testAtomicRefViaDefaultTyping() throws Exception
+    {
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.enableDefaultTyping(DefaultTyping.NON_FINAL);
+        AtomicStringWrapper data = new AtomicStringWrapper("foo");
+        String json = mapper.writerWithDefaultPrettyPrinter().writeValueAsString(data);
+        AtomicStringWrapper result = mapper.readValue(json, AtomicStringWrapper.class);
+        assertNotNull(result);
+    }
+}