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   * 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
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   * See the License for the specific language governing permissions and
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  package org.apache.cassandra.tools;
  
  import java.util.Collections;
  
  import com.google.common.collect.ImmutableMap;
  import org.junit.Test;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.tools.ToolRunner.ToolResult;
  
  import static org.junit.Assert.assertTrue;
  
  public class ToolsEnvsConfigsTest
  {
      //Some JDK can output env info on stdout/err. Check we can clean them
      @Test
      public void testJDKEnvInfoDefaultCleaners()
      {
          DatabaseDescriptor.daemonInitialization();
          ToolResult tool = ToolRunner.invoke(ImmutableMap.of("_JAVA_OPTIONS", "-Djava.net.preferIPv4Stack=true"),
                                              null,
                                              CQLTester.buildNodetoolArgs(Collections.emptyList()));
          assertTrue("Cleaned Stderr was not empty: " + tool.getCleanedStderr(), tool.getCleanedStderr().isEmpty());
      }
  }
  