Add test for #1328 (not failing, alas)

src/test/java/com/fasterxml/jackson/failing/EnumAsExternalPropertyId1328Test.java

@@ -0,0 +1,54 @@
+package com.fasterxml.jackson.failing;
+
+import com.fasterxml.jackson.annotation.*;
+
+import com.fasterxml.jackson.databind.*;
+
+// Test for [databind#1328]; does not actually reproduce the issue at this point.
+public class EnumAsExternalPropertyId1328Test extends BaseMapTest
+{
+    static class Bean1328 {
+        public Type1328 type;
+
+        @JsonTypeInfo(property = "type", include = JsonTypeInfo.As.EXTERNAL_PROPERTY, use = JsonTypeInfo.Id.NAME,
+                visible=true)
+        @JsonSubTypes({
+                  @JsonSubTypes.Type(value = A.class,name = "A"),
+                  @JsonSubTypes.Type(value = B.class,name = "B")
+        })
+        public Interface1328 obj;
+    }
+
+    static interface Interface1328 { }
+
+    enum Type1328 {
+        A, B;
+    }
+
+   static class A implements Interface1328 {
+       public int a;
+   }
+
+   static class B implements Interface1328 {
+       public int b;
+   }
+
+   /*
+    /**********************************************************
+    /* Test methods
+    /**********************************************************
+     */
+
+    private final ObjectMapper MAPPER = new ObjectMapper();
+
+    public void testExternalTypeIdAsEnum() throws Exception
+    {
+        final String JSON = aposToQuotes("{ 'type':'A', 'obj': { 'a' : 4 } }'");
+        Bean1328 result = MAPPER.readValue(JSON, Bean1328.class);
+        assertNotNull(result.obj);
+        assertSame(A.class, result.obj.getClass());
+        assertEquals(4, ((A) result.obj).a);
+
+        assertSame(Type1328.A, result.type);
+    }
+}