I have this simple enumeration which is generated by OpenAPI code generation using enumOuterClass.mustache.

@JsonbTypeSerializer(Address.Serializer.class)
@JsonbTypeDeserializer(Address.Deserializer.class)
public enum Address {
  MAIN_ADDRESS("Main_Address"),
  DELIVERY_ADDRESS("Delivery_Address");

  private String value;

  Address(String value) {
    this.value = value;
  }

  public String value() {
    return value;
  }

  @Override
  public String toString() {
    return value;
  }

  public static final class AddressDeserializer implements JsonbDeserializer<Address> {
    @Override
    public Address deserialize(JsonParser parser, DeserializationContext ctx, Type rtType) {
      String value;
      try {
        value = parser.getString();
      } catch (java.lang.IllegalStateException ise) {
        return null;
      }
      for (Address b : Address.values()) {
        if (b.value().equals(value)) {
          return b;
        }
      }
      throw new IllegalArgumentException("Unexpected value '" + parser.getString() + "'");
    }
  }

  public static final class AddressSerializer implements JsonbSerializer<Address> {
    @Override
    public void serialize(Address obj, JsonGenerator generator, SerializationContext ctx) {
      generator.write(obj.value);
    }
  }

}

Now I have written a simple test for serialization and deserialization of the enum values:

  @Test
  void addressEnumTest() throws Exception {
    try (Jsonb jsonb = JsonbBuilder.create()) {
      for (Address a : Address.values()) {
        String json = jsonb.toJson(a);
        assertEquals(""" + a.value() + """, json);

        Address result = jsonb.fromJson(json, Address.class);
        assertEquals(a, result);
      }
    }
  }

The serialization works perfectly while debugging and the breakpoints set are hit.
The deserialization is never called and my breakpoints there are not hit.

While continue the test I receive the following error:
jakarta.json.bind.JsonbException: Internal error: No enum constant Address.Main_Address.

If the value in JSON is written uppercase it works, but then my own deserializer is also never called.

How can I implement that my own deserializer is called?

I searched a lot on google but found only old stuff from 2020.
Some interesting links where

• https://github.com/eclipse-ee4j/yasson/issues/221
• JSON Binding @JsonbTypeDeserializer annotation ignored on enums?