content: /*
   * 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.cassandra.utils;
  
  import org.junit.Assert;
  
  /**
   * Responsible for stubbing out the System.exit() logic during unit tests.
   */
  public class KillerForTests extends JVMStabilityInspector.Killer
  {
      private boolean killed = false;
      private boolean quiet = false;
      private final boolean expected;
  
      public KillerForTests()
      {
          expected = true;
      }
  
      public KillerForTests(boolean expectFailure)
      {
          expected = expectFailure;
      }
  
      @Override
      public void killCurrentJVM(Throwable t, boolean quiet)
      {
          if (!expected)
              Assert.fail("Saw JVM Kill but did not expect it.");
  
          if (killed)
          {
              // Can only be killed once
              return;
          }
          this.killed = true;
          this.quiet = quiet;
      }
  
      public boolean wasKilled()
      {
          return killed;
      }
  
      public boolean wasKilledQuietly()
      {
          return quiet;
      }
  
      public void reset()
      {
          killed = false;
      }
  }
  