Add coverage for #2024 testing, but fix proves elusive.

Author: cowtowncoder

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

@@ -3,11 +3,13 @@
 import com.fasterxml.jackson.annotation.*;
 
 import com.fasterxml.jackson.databind.*;
+import com.fasterxml.jackson.databind.exc.InvalidNullException;
 
 public class NullConversionWithCreatorTest extends BaseMapTest
 {
     // [databind#2024]
     static class EmptyFromNullViaCreator {
+        @JsonSetter(nulls=Nulls.AS_EMPTY)
         Point p;
 
         @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
@@ -18,6 +20,18 @@ public EmptyFromNullViaCreator(@JsonSetter(nulls=Nulls.AS_EMPTY)
         }
     }
 
+    static class FailFromNullViaCreator {
+        @JsonSetter(nulls=Nulls.AS_EMPTY)
+        Point p;
+
+        @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
+        public FailFromNullViaCreator(@JsonSetter(nulls=Nulls.FAIL)
+            @JsonProperty("p") Point p)
+        {
+            this.p = p;
+        }
+    }
+
     /*
     /**********************************************************
     /* Test methods
@@ -33,4 +47,16 @@ public void testEmptyFromNullViaCreator() throws Exception
         assertNotNull(result);
         assertNotNull(result.p);
     }
+
+    // [databind#2024]
+    public void testFailForNullViaCreator() throws Exception
+    {
+        try {
+            /*FailFromNullViaCreator result =*/ MAPPER.readValue(aposToQuotes("{'p':null}"),
+                    FailFromNullViaCreator.class);
+            fail("Should not pass");
+        } catch (InvalidNullException e) {
+            verifyException(e, "property \"p\"");
+        }
+    }
 }