FasterXML#1586 failing test (works with <2.8.3)

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

@@ -0,0 +1,170 @@
+package com.fasterxml.jackson.failing;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class TestSerialization
+{
+
+    public static class Holder
+    {
+        int i;
+        int i0 = 0;
+        int i1 = 1;
+
+        String sEmpty = "";
+        String sEmpty2 = "";
+        String sNull;
+        String sNull2;
+        String s = "st";
+        String s2 = "st2";
+        String s3 = "st3";
+
+        public Holder() {
+        }
+
+        public int getI()
+        {
+            return i;
+        }
+
+        public int getI1()
+        {
+            return i1;
+        }
+
+        public int getI0()
+        {
+            return i0;
+        }
+
+        public String getsEmpty()
+        {
+            return sEmpty;
+        }
+
+        public String getsNull()
+        {
+            return sNull;
+        }
+
+        public String getsEmpty2()
+        {
+            return sEmpty2;
+        }
+        public String getsNull2()
+        {
+            return sNull2;
+        }
+        public String getS()
+        {
+            return s;
+        }
+
+        public String getS2()
+        {
+            return s2;
+        }
+
+        public String getS3()
+        {
+            return s3;
+        }
+
+        @Override
+        public String toString()
+        {
+            return "Holder [i=" + i + ", i0=" + i0 + ", i1=" + i1 + ", sEmpty=" + sEmpty + ", sEmpty2=" + sEmpty2
+                    + ", sNull=" + sNull + ", sNull2=" + sNull2 + ", s=" + s + ", s2=" + s2 + ", s3=" + s3 + "]";
+        }
+
+    }
+
+    @Test
+    public void testInts() throws Exception
+    {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.setSerializationInclusion(Include.NON_DEFAULT);
+
+        Holder holder = new Holder();
+        // Changing the default value of Holder.i1 to the default value of int
+        holder.i1 = 0;
+
+        String asString = objectMapper.writeValueAsString(holder);
+
+        System.out.println(asString);
+
+        Holder readValue = objectMapper.readValue(asString, Holder.class);
+        System.out.println(readValue);
+
+        assertEquals(holder.i, readValue.i);
+        assertEquals(holder.i0, readValue.i0);
+        assertEquals(holder.i1, readValue.i1);
+    }
+
+    @Test
+    public void testStrings() throws Exception
+    {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.setSerializationInclusion(Include.NON_DEFAULT);
+
+        Holder holder = new Holder();
+        // Changing the default value of Holder.s to the default value of String
+        holder.s = null;
+        holder.s2 = "";
+        holder.sEmpty2 = null;
+        holder.sNull2 = "";
+
+        String asString = objectMapper.writeValueAsString(holder);
+
+        System.out.println(asString);
+
+        Holder readValue = objectMapper.readValue(asString, Holder.class);
+        System.out.println(readValue);
+
+        assertEquals(holder.sEmpty, readValue.sEmpty);
+        assertEquals(holder.sNull, readValue.sNull);
+        assertEquals(holder.sEmpty2, readValue.sEmpty2);
+        assertEquals(holder.sNull2, readValue.sNull2);
+        assertEquals(holder.s, readValue.s);
+        assertEquals(holder.s2, readValue.s2);
+        assertEquals(holder.s3, readValue.s3);
+    }
+
+    @Test
+    public void testStringsAmptyAsNull() throws Exception
+    {
+        ObjectMapper objectMapper = new ObjectMapper();
+        objectMapper.setSerializationInclusion(Include.NON_DEFAULT);
+
+        objectMapper.enable(DeserializationFeature.ACCEPT_EMPTY_STRING_AS_NULL_OBJECT);
+
+        Holder holder = new Holder();
+        // Changing the default value of Holder.s to the default value of String
+        holder.s = null;
+        holder.s2 = "";
+        //Set null to empty default & empty to null default
+        holder.sEmpty2 = null;
+        holder.sNull2 = "";
+
+        String asString = objectMapper.writeValueAsString(holder);
+
+        System.out.println(asString);
+
+        Holder readValue = objectMapper.readValue(asString, Holder.class);
+        System.out.println(readValue);
+
+        assertEquals(holder.sEmpty, readValue.sEmpty);
+        assertEquals(holder.sNull, readValue.sNull);
+        assertEquals(holder.sEmpty2, readValue.sEmpty2);
+        assertEquals(holder.sNull2, readValue.sNull2);
+        assertEquals(holder.s, readValue.s);
+        assertEquals(holder.s2, readValue.s2);
+        assertEquals(holder.s3, readValue.s3);
+    }
+}