Add failing test for #2039

Author: cowtowncoder

src/test/java/com/fasterxml/jackson/databind/jsontype/ext/ExternalTypeIdWithUnwrapped2039Test.java

@@ -0,0 +1,58 @@
+package com.fasterxml.jackson.databind.jsontype.ext;
+
+import com.fasterxml.jackson.annotation.*;
+
+import com.fasterxml.jackson.databind.*;
+
+public class ExternalTypeIdWithUnwrapped2039Test extends BaseMapTest
+{
+    static class MainType2039 {
+        public String text;
+
+        @JsonUnwrapped public Wrapped2039 wrapped;
+
+        @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.EXTERNAL_PROPERTY, property = "subtype")
+        @JsonSubTypes({ @JsonSubTypes.Type(value = SubA2039.class, name = "SubA") })
+        public SubType2039 sub;
+
+        public void setSub(SubType2039 s) {
+            sub = s;
+        }
+
+        public void setWrapped(Wrapped2039 w) {
+            wrapped = w;
+        }
+    }
+
+    static class Wrapped2039 {
+        public String wrapped;
+    }
+
+    public static class SubType2039 { }
+
+    public static class SubA2039 extends SubType2039 {
+        @JsonProperty public boolean bool;
+    }
+    
+    public void testExternalWithUnwrapped2039() throws Exception
+    {
+        final ObjectMapper mapper = newObjectMapper();
+
+        final String json = aposToQuotes("{\n"
+                +"'text': 'this is A',\n"
+                +"'wrapped': 'yes',\n"
+                +"'subtype': 'SubA',\n"
+                +"'sub': {\n"
+                +"  'bool': true\n"
+                +"}\n"
+                +"}");
+        final MainType2039 main = mapper.readValue(json, MainType2039.class);
+
+        assertEquals("this is A", main.text);
+        assertEquals("yes", main.wrapped.wrapped);
+
+        assertNotNull(main.sub);
+        assertEquals(SubA2039.class, main.sub.getClass()); // <- fails here
+        assertEquals(true, ((SubA2039) main.sub).bool);
+    }
+}