// Copyright 2025 The Nomulus Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package google.registry.persistence;

import static com.google.common.collect.ImmutableSet.toImmutableSet;
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;

import com.google.common.collect.ImmutableSet;
import google.registry.model.GetterDelegate;
import jakarta.persistence.Entity;
import java.lang.reflect.Field;
import org.junit.jupiter.api.Test;

/** Unit tests for Hibernate entities. */
public class EntitiesTest {

  @Test
  void getterDelegates_allMethodNamesExist() throws Exception {
    ImmutableSet<Class<?>> entityClasses =
        PersistenceXmlUtility.getManagedClasses().stream()
            .filter(clazz -> clazz.isAnnotationPresent(Entity.class))
            .collect(toImmutableSet());
    for (Class<?> clazz : entityClasses) {
      for (Field field : clazz.getDeclaredFields()) {
        if (field.isAnnotationPresent(GetterDelegate.class)) {
          String methodName = field.getAnnotation(GetterDelegate.class).methodName();
          // Note that calling getDeclaredMethod(methodName) specifically looks for a method with
          // no parameters; if there were a method that took e.g. one parameter, you'd need
          // getDeclaredMethod(methodName, param1) to find it.
          assertDoesNotThrow(
              () -> clazz.getDeclaredMethod(methodName),
              String.format(
                  "Method %s() specified in the GetterDelegate "
                      + "annotation of field %s could not be found on class %s",
                  methodName, field.getName(), clazz.getCanonicalName()));
        }
      }
    }
  }
}
