/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
    *
    * This program and the accompanying materials are dual-licensed under
    * either the terms of the Eclipse Public License v1.0 as published by
    * the Eclipse Foundation
    *
    *   or (per the licensee's choosing)
   *
   * under the terms of the GNU Lesser General Public License version 2.1
   * as published by the Free Software Foundation.
   */
  package ch.qos.logback.classic.corpus;
  
  import java.util.Random;
  
  import javax.management.remote.JMXProviderException;
  
  public class ExceptionBuilder {
  
      static Throwable build(Random r, double nestingProbability) {
          double rn = r.nextDouble();
          boolean nested = false;
          if (rn < nestingProbability) {
              nested = true;
          }
  
          Throwable cause = null;
          if (nested) {
              cause = makeThrowable(r, null);
          }
          return makeThrowable(r, cause);
      }
  
      private static Throwable makeThrowable(Random r, Throwable cause) {
          int exType = r.nextInt(4);
          switch (exType) {
          case 0:
              return new IllegalArgumentException("an illegal argument was passed", cause);
          case 1:
              return new Exception("this is a test", cause);
          case 2:
              return new JMXProviderException("jmx provider exception error occured", cause);
          case 3:
              return new OutOfMemoryError("ran out of memory");
          }
          return null;
      }
  
  }