package com.fasterxml.jackson.databind.jsontype;
import java.util.concurrent.TimeUnit;
import com.fasterxml.jackson.databind.BaseMapTest;
import com.fasterxml.jackson.databind.ObjectMapper;
public class TestDefaultForEnums
extends BaseMapTest
{
public enum TestEnum {
A, B;
}
static final class EnumHolder
{
public Object value; // "untyped"
public EnumHolder() { }
public EnumHolder(TestEnum e) { value = e; }
}
protected static class TimeUnitBean {
public TimeUnit timeUnit;
}
/*
/**********************************************************
/* Test methods
/**********************************************************
*/
public void testSimpleEnumBean() throws Exception
{
TimeUnitBean bean = new TimeUnitBean();
bean.timeUnit = TimeUnit.SECONDS;
// First, without type info
ObjectMapper m = new ObjectMapper();
String json = m.writeValueAsString(bean);
TimeUnitBean result = m.readValue(json, TimeUnitBean.class);
assertEquals(TimeUnit.SECONDS, result.timeUnit);
// then with type info
m = new ObjectMapper();
m.enableDefaultTyping();
json = m.writeValueAsString(bean);
result = m.readValue(json, TimeUnitBean.class);
assertEquals(TimeUnit.SECONDS, result.timeUnit);
}
public void testSimpleEnumsInObjectArray() throws Exception
{
ObjectMapper m = new ObjectMapper();
m.enableDefaultTyping();
// Typing is needed for enums
String json = m.writeValueAsString(new Object[] { TestEnum.A });
assertEquals("[[\"com.fasterxml.jackson.databind.jsontype.TestDefaultForEnums$TestEnum\",\"A\"]]", json);
// and let's verify we get it back ok as well:
Object[] value = m.readValue(json, Object[].class);
assertEquals(1, value.length);
assertSame(TestEnum.A, value[0]);
}
public void testSimpleEnumsAsField() throws Exception
{
ObjectMapper m = new ObjectMapper();
m.enableDefaultTyping();
String json = m.writeValueAsString(new EnumHolder(TestEnum.B));
assertEquals("{\"value\":[\"com.fasterxml.jackson.databind.jsontype.TestDefaultForEnums$TestEnum\",\"B\"]}", json);
EnumHolder holder = m.readValue(json, EnumHolder.class);
assertSame(TestEnum.B, holder.value);
}
}