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

package com.fasterxml.jackson.failing;

import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.databind.*;

public class TestTreeWithType extends BaseMapTest
{
    public static class Foo {
        public String bar;

        public Foo() { }

        public Foo(String bar) {
            this.bar = bar;
        }
    }
    
    /*
    /**********************************************************
    /* Unit tests
    /**********************************************************
     */

    private final ObjectMapper mapper = new ObjectMapper();

    public void testValueAsStringWithoutDefaultTyping() throws Exception {

        Foo foo = new Foo("baz");
        String json = mapper.writeValueAsString(foo);

        JsonNode jsonNode = mapper.readTree(json);
        assertEquals(jsonNode.get("bar").textValue(), foo.bar);
    }

    public void testValueAsStringWithDefaultTyping() throws Exception {
        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);

        Foo foo = new Foo("baz");
        String json = mapper.writeValueAsString(foo);

        JsonNode jsonNode = mapper.readTree(json);
        assertEquals(jsonNode.get("bar").textValue(), foo.bar);
    }

    public void testReadTreeWithDefaultTyping() throws Exception
    {
        final String CLASS = Foo.class.getName();

        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL,
                JsonTypeInfo.As.PROPERTY);
        String json = "{\"@class\":\""+CLASS+"\",\"bar\":\"baz\"}";
        JsonNode jsonNode = mapper.readTree(json);
        assertEquals(jsonNode.get("bar").textValue(), "baz");
    }

    public void testValueToTreeWithoutDefaultTyping() throws Exception {

        Foo foo = new Foo("baz");
        JsonNode jsonNode = mapper.valueToTree(foo);
        assertEquals(jsonNode.get("bar").textValue(), foo.bar);
    }

    public void testValueToTreeWithDefaultTyping() throws Exception {
        mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);

        Foo foo = new Foo("baz");
        JsonNode jsonNode = mapper.valueToTree(foo);
        assertEquals(jsonNode.get("bar").textValue(), foo.bar);
    }
}