/*
    *    Copyright 2009-2023 the original author or authors.
    *
    *    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
    *
    *       https://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 org.apache.ibatis.reflection;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.UndeclaredThrowableException;
  
  import org.junit.jupiter.api.Test;
  
  class ExceptionUtilTest {
  
    @Test
    void shouldUnwrapThrowable() {
      Exception exception = new Exception();
      assertEquals(exception, ExceptionUtil.unwrapThrowable(exception));
      assertEquals(exception, ExceptionUtil.unwrapThrowable(new InvocationTargetException(exception, "test")));
      assertEquals(exception, ExceptionUtil.unwrapThrowable(new UndeclaredThrowableException(exception, "test")));
      assertEquals(exception, ExceptionUtil
          .unwrapThrowable(new InvocationTargetException(new InvocationTargetException(exception, "test"), "test")));
      assertEquals(exception, ExceptionUtil
          .unwrapThrowable(new InvocationTargetException(new UndeclaredThrowableException(exception, "test"), "test")));
    }
  
  }