/*
 * QQQ - Low-code Application Framework for Engineers.
 * Copyright (C) 2021-2023.  Kingsrook, LLC
 * 651 N Broad St Ste 205 # 6917 | Middletown DE 19709 | United States
 * contact@kingsrook.com
 * https://github.com/Kingsrook/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package com.kingsrook.qqq.backend.core.utils;


import org.junit.jupiter.api.Test;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;


/*******************************************************************************
 ** Unit test for ObjectUtils
 *******************************************************************************/
class ObjectUtilsTest
{

   /*******************************************************************************
    **
    *******************************************************************************/
   @SuppressWarnings({ "DataFlowIssue", "ConfusingArgumentToVarargsMethod" })
   @Test
   void testRequireNonNullElse()
   {
      assertThatThrownBy(() -> ObjectUtils.requireNonNullElse(null)).isInstanceOf(NullPointerException.class);
      assertThatThrownBy(() -> ObjectUtils.requireNonNullElse(null, null)).isInstanceOf(NullPointerException.class);
      assertThatThrownBy(() -> ObjectUtils.requireNonNullElse(null, null, null)).isInstanceOf(NullPointerException.class);
      assertEquals("a", ObjectUtils.requireNonNullElse("a", "b"));
      assertEquals("b", ObjectUtils.requireNonNullElse(null, "b", "c"));
      assertEquals("c", ObjectUtils.requireNonNullElse(null, null, "c"));
   }



   /*******************************************************************************
    **
    *******************************************************************************/
   @SuppressWarnings({ "StringOperationCanBeSimplified", "DataFlowIssue" })
   @Test
   void testTryElse()
   {
      String nullString = null;
      assertEquals("tried", ObjectUtils.tryElse(() -> "tried".toString(), "else"));
      assertEquals("else", ObjectUtils.tryElse(() -> nullString.toString(), "else"));
      assertNull(ObjectUtils.tryElse(() -> null, "else"));
   }



   /*******************************************************************************
    **
    *******************************************************************************/
   @SuppressWarnings({ "StringOperationCanBeSimplified", "DataFlowIssue" })
   @Test
   void testTryAndRequireNonNullElse()
   {
      String nullString = null;
      assertEquals("tried", ObjectUtils.tryAndRequireNonNullElse(() -> "tried".toString(), "else"));
      assertEquals("else", ObjectUtils.tryAndRequireNonNullElse(() -> nullString.toString(), "else"));
      assertEquals("else", ObjectUtils.tryAndRequireNonNullElse(() -> null, "else"));
   }

}