TestOverlappingTypeIdNames.java

package com.fasterxml.jackson.databind.jsontype;

import org.junit.jupiter.api.Test;

import com.fasterxml.jackson.annotation.*;

import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.testutil.DatabindTestUtil;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;

public class TestOverlappingTypeIdNames extends DatabindTestUtil
{
    @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
    @JsonSubTypes({
            @JsonSubTypes.Type(name = "a", value = Impl312.class),
            @JsonSubTypes.Type(name = "b", value = Impl312.class)
    })
    static abstract class Base312 { }

    static class Impl312 extends Base312 {
        public int x;
    }

    @JsonTypeInfo(use = JsonTypeInfo.Id.NAME, property = "type")
    @JsonSubTypes({
        @JsonSubTypes.Type(name = "a", value = Impl312B1.class),
        @JsonSubTypes.Type(name = "a", value = Impl312B2.class)
})
    static class Base312B {
        public int value = 1;
    }

    static class Impl312B1 extends Base312B { }
    static class Impl312B2 extends Base312B { }

    final ObjectMapper MAPPER = newJsonMapper();

    @Test
    public void testOverlappingNameDeser() throws Exception
    {
        Base312 value;

        // Ensure both type ids are acceptable

        value = MAPPER.readValue(a2q("{'type':'a','x':7}"), Base312.class);
        assertNotNull(value);
        assertEquals(Impl312.class, value.getClass());
        assertEquals(7, ((Impl312) value).x);

        value = MAPPER.readValue(a2q("{'type':'b','x':3}"), Base312.class);
        assertNotNull(value);
        assertEquals(Impl312.class, value.getClass());
        assertEquals(3, ((Impl312) value).x);
    }

    @Test
    public void testOverlappingNameSer() throws Exception
    {
        assertEquals(a2q("{'type':'a','value':1}"),
                MAPPER.writeValueAsString(new Impl312B1()));
        assertEquals(a2q("{'type':'a','value':1}"),
                MAPPER.writeValueAsString(new Impl312B2()));
    }
}