/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.apache.commons.crypto.random;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assumptions.assumeTrue;
  
  import java.io.FileNotFoundException;
  import java.lang.reflect.InvocationTargetException;
  import java.security.GeneralSecurityException;
  import java.util.Properties;
  
  import org.junit.jupiter.api.Test;
  
  
  public class OsCryptoRandomTest extends AbstractRandomTest {
  
      @Override
      public CryptoRandom getCryptoRandom() throws GeneralSecurityException {
          // Windows does not have a /dev/random device
          assumeTrue(!System.getProperty("os.name").contains("Windows"));
          final Properties props = new Properties();
          props.setProperty(CryptoRandomFactory.CLASSES_KEY, OsCryptoRandom.class.getName());
          final CryptoRandom random = CryptoRandomFactory.getCryptoRandom(props);
          assertTrue(random instanceof OsCryptoRandom, "The CryptoRandom should be: " + OsCryptoRandom.class.getName());
          return random;
      }
  
      @Test
      public void testInvalidRandom() {
          final Properties props = new Properties();
          props.setProperty(CryptoRandomFactory.CLASSES_KEY, OsCryptoRandom.class.getName());
          // Invalid device
          props.setProperty(CryptoRandomFactory.DEVICE_FILE_PATH_KEY, "");
          final Exception e = assertThrows(GeneralSecurityException.class, () -> CryptoRandomFactory.getCryptoRandom(props));
          Throwable cause;
          cause = e.getCause();
          assertEquals(IllegalArgumentException.class, cause.getClass());
          cause = cause.getCause();
          assertEquals(InvocationTargetException.class, cause.getClass());
          cause = cause.getCause();
          assertEquals(IllegalArgumentException.class, cause.getClass());
          cause = cause.getCause();
          assertEquals(FileNotFoundException.class, cause.getClass());
  
      }
  }