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 com.github.jobson.systemtests.commands;
  
  import com.github.jobson.App;
  import org.apache.commons.io.IOUtils;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.URL;
  import java.net.URLClassLoader;
  import java.nio.file.Files;
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  import java.util.stream.Collectors;
  
  public final class CliHelpers {
  
      public static int run(String... args) throws IOException, InterruptedException {
          final File pwd = Files.createTempDirectory(CliHelpers.class.getSimpleName()).toFile();
          return run(pwd, args);
      }
  
      public static int run(File pwd, String... args) throws IOException, InterruptedException {
          return runAndGetOutputs(pwd, args).getExitCode();
      }
  
      public static CliOutputs runAndGetOutputs(File pwd, String... args) throws IOException, InterruptedException {
          final Process process = new ProcessBuilder(getAllArgs(Arrays.asList(args)))
                  .directory(pwd)
                  .start();
  
          final byte stdout[] = IOUtils.toByteArray(process.getInputStream());
          final byte stderr[] = IOUtils.toByteArray(process.getErrorStream());
          final int exitCode = process.waitFor();
  
          System.out.println(String.format("Process exited with exit code of %s", exitCode));
          System.out.println("Stdout:");
          System.out.print(new String(stdout));
          System.out.println("Stderr:");
          System.out.print(new String(stderr));
  
          return new CliOutputs(stdout, stderr, exitCode);
      }
  
      public static List<String> getAllArgs(List<String> extraArgs) {
          final List<String> processArgs = new ArrayList<>();
  
          processArgs.add(System.getProperty("java.home") + "/bin/java");
          processArgs.add("-classpath");
          processArgs.add(reconstructClasspath());
          processArgs.add(App.class.getCanonicalName());
  
          processArgs.addAll(extraArgs);
  
          return processArgs;
      }
  
      private static String reconstructClasspath() {
          return System.getProperty("java.class.path");
      }
  }
  