/*
    * 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 org.basepom.mojo.propertyhelper;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNotSame;
  
  import java.util.UUID;
  
  import org.junit.jupiter.api.Test;
  
  public class RandomUtilTest {
  
      @Test
      public void testCreateRandomFromSeedString() {
          String seedString = UUID.randomUUID().toString();
  
          var secureRandom1 = RandomUtil.createRandomFromSeed(seedString);
          var secureRandom2 = RandomUtil.createRandomFromSeed(seedString);
  
          assertNotNull(secureRandom1);
          assertNotNull(secureRandom2);
  
          //Verify that two different SecureRandom instances are created for each call with null parameter
          assertNotSame(secureRandom1, secureRandom2);
  
          long value1 = secureRandom1.nextLong();
          long value2 = secureRandom2.nextLong();
          assertThat(value1).isEqualTo(value2);
      }
  
      /**
       * Tests `createRandomFromSeedString` method of `RandomUtil` class.
       * When given a null, this method also generates a SecureRandom instance.
       * This method specifically validates the nonnullness and the uniqueness of the returned SecureRandom instance.
       */
      @Test
      public void testCreateRandomFromNull() {
          var secureRandom1 = RandomUtil.createRandomFromSeed(null);
          var secureRandom2 = RandomUtil.createRandomFromSeed(null);
  
          assertNotNull(secureRandom1);
          assertNotNull(secureRandom2);
  
          //Verify that two different SecureRandom instances are created for each call with null parameter
          assertNotSame(secureRandom1, secureRandom2);
  
          assertThat(secureRandom1.nextLong()).isNotEqualTo(secureRandom2.nextLong());
      }
  }