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.harry.checker;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.apache.cassandra.distributed.test.ExecUtil;
  import org.apache.cassandra.harry.gen.EntropySource;
  import org.apache.cassandra.harry.gen.rng.JdkRandomEntropySource;
  
  public class TestHelper
  {
      private static final Logger logger = LoggerFactory.getLogger(TestHelper.class);
  
      public static void withRandom(ModelChecker.ThrowingConsumer<EntropySource> rng)
      {
          withRandom(System.nanoTime(), rng);
      }
  
      public static void withRandom(long seed, ModelChecker.ThrowingConsumer<EntropySource> rng)
      {
          try
          {
              logger.info("Seed: {}", seed);
              rng.accept(new JdkRandomEntropySource(seed));
          }
          catch (Throwable t)
          {
              throw new AssertionError(String.format("Caught an exception at seed:%dL", seed), t);
          }
      }
  
      public static void repeat(int num, ExecUtil.ThrowingSerializableRunnable<?> r)
      {
          for (int i = 0; i < num; i++)
          {
              try
              {
                  r.run();
              }
              catch (Throwable throwable)
              {
                  throw new AssertionError(throwable);
              }
          }
      }
  }
  