Examples of org.zeroturnaround.exec.ProcessExecutor

org.zeroturnaround.exec.ProcessExecutor
Helper for executing sub processes.
It's implemented as a wrapper of {@link ProcessBuilder} complementing it with additional features such as:
- Handling process streams (copied from Commons Exec library).
- Destroying process on VM exit (copied from Commons Exec library).
- Checking process exit code.
- Setting a timeout for running the process and automatically stopping it in case of timeout.
- Either waiting for the process to finish ( {@link #execute()}) or returning a {@link Future} ({@link #start()}.
- Reading the process output stream into a buffer ( {@link #readOutput(boolean)}, {@link ProcessResult}).
The default configuration for executing a process is following:
- Process is not automatically destroyed on VM exit.
- Error stream is redirected to its output stream. Use {@link #redirectErrorStream(boolean)} to override it.
- Output stream is pumped to a {@link NullOutputStream}, Use {@link #streams(ExecuteStreamHandler)}, {@link #redirectOutput(OutputStream)}, or any of the redirectOutputAs* methods.to override it.
- Any exit code is allowed. Use {@link #exitValues(Integer)} to override it.
- In case of timeout or cancellation {@link Process#destroy()} is invoked.


public class ProcessExecutorExitValueTest {


  @Test(expected=InvalidExitValueException.class)
  public void testJavaVersionExitValueCheck() throws Exception {
    new ProcessExecutor().command("java", "-version").exitValues(3).execute();
  }

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    new ProcessExecutor().command("java", "-version").exitValues(3).execute();
  }


  @Test(expected=InvalidExitValueException.class)
  public void testJavaVersionExitValueCheckTimeout() throws Exception {
    new ProcessExecutor().command("java", "-version").exitValues(3).timeout(60, TimeUnit.SECONDS).execute();
  }

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  public void testJavaVersionExitValueCheckTimeout() throws Exception {
    new ProcessExecutor().command("java", "-version").exitValues(3).timeout(60, TimeUnit.SECONDS).execute();
  }


  public void testNonZeroExitValueByDefault() throws Exception {
    new ProcessExecutor(exitLikeABoss(17)).execute();
  }

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    new ProcessExecutor(exitLikeABoss(17)).execute();
  }


  @Test
  public void testCustomExitValueValid() throws Exception {
    new ProcessExecutor(exitLikeABoss(17)).exitValues(17).execute();
  }

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    new ProcessExecutor(exitLikeABoss(17)).exitValues(17).execute();
  }


  @Test(expected=InvalidExitValueException.class)
  public void testCustomExitValueInvalid() throws Exception {
    new ProcessExecutor(exitLikeABoss(17)).exitValues(15).execute();
  }

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public class ProcessExecutorMainTest {


  @Test(expected=IllegalStateException.class)
  public void testNoCommand() throws Exception {
    new ProcessExecutor().execute();
  }

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    new ProcessExecutor().execute();
  }


  @Test(expected=IOException.class)
  public void testNoSuchFile() throws Exception {
    new ProcessExecutor().command("unknown command").execute();
  }

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    new ProcessExecutor().command("unknown command").execute();
  }


  @Test
  public void testJavaVersion() throws Exception {
    int exit = new ProcessExecutor().command("java", "-version").execute().getExitValue();
    Assert.assertEquals(0, exit);
  }

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    Assert.assertEquals(0, exit);
  }


  @Test
  public void testJavaVersionCommandSplit() throws Exception {
    int exit = new ProcessExecutor().commandSplit("java -version").execute().getExitValue();
    Assert.assertEquals(0, exit);
  }

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    Assert.assertEquals(0, exit);
  }


  @Test
  public void testJavaVersionFuture() throws Exception {
    int exit = new ProcessExecutor().command("java", "-version").start().getFuture().get().getExitValue();
    Assert.assertEquals(0, exit);
  }

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