PropertyAliasTest.java

package com.fasterxml.jackson.databind.deser;

import com.fasterxml.jackson.annotation.JsonAlias;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.BaseMapTest;
import com.fasterxml.jackson.databind.ObjectMapper;

public class PropertyAliasTest extends BaseMapTest
{
    static class AliasBean {
        @JsonAlias({ "nm", "Name" })
        public String name;

        int _xyz;

        int _a;

        @JsonCreator
        public AliasBean(@JsonProperty("a")
            @JsonAlias("A") int a) {
            _a = a;
        }
        
        @JsonAlias({ "Xyz" })
        public void setXyz(int x) {
            _xyz = x;
        }
    }

    private final ObjectMapper MAPPER = new ObjectMapper();

    // [databind#1029]
    public void testSimpleAliases() throws Exception
    {
        AliasBean bean;

        // first, one indicated by field annotation, set via field
        bean = MAPPER.readValue(aposToQuotes("{'Name':'Foobar','a':3,'xyz':37}"),
                AliasBean.class);
        assertEquals("Foobar", bean.name);
        assertEquals(3, bean._a);
        assertEquals(37, bean._xyz);

        // then method-bound one
        bean = MAPPER.readValue(aposToQuotes("{'name':'Foobar','a':3,'Xyz':37}"),
                AliasBean.class);
        assertEquals("Foobar", bean.name);
        assertEquals(3, bean._a);
        assertEquals(37, bean._xyz);
        
        // and finally, constructor-backed one
        bean = MAPPER.readValue(aposToQuotes("{'name':'Foobar','A':3,'xyz':37}"),
                AliasBean.class);
        assertEquals("Foobar", bean.name);
        assertEquals(3, bean._a);
        assertEquals(37, bean._xyz);
    }
}