Orika SortedSet test

SortedSetTest.java

package orika;

import ma.glasnost.orika.MapperFacade;
import ma.glasnost.orika.impl.DefaultMapperFactory;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.util.SortedSet;
import java.util.TreeSet;

/**
 * Created by yonatan on 8/4/2015.
 */
public class SortedSetTest {
    MapperFacade mapper;

    @Before
    public void setup(){
        mapper = new DefaultMapperFactory.Builder().build().getMapperFacade();
    }

    public static class Foo {
        public SortedSet<String> getSortedSet(){
            return this.sortedSet;
        }
        public void setSortedSet(SortedSet<String> sortedSet){
            this.sortedSet=sortedSet;
        }
        private SortedSet<String> sortedSet;
    }

    public static class Bar {
        public SortedSet<String> getSortedSet(){
            return this.sortedSet;
        }
        public void setSortedSet(SortedSet<String> sortedSet){
            this.sortedSet=sortedSet;
        }
        private SortedSet<String> sortedSet;
    }

    @Test
    public void shouldMapSortedSet(){
        Foo a=new Foo();
        a.setSortedSet(new TreeSet<String>());
        Bar b = mapper.map(a, Bar.class); //throw ClassCastException: java.util.LinkedHashSet cannot be cast to java.util.SortedSet
        Assert.assertTrue(b.getSortedSet().isEmpty());
    }
}