How to use

getCause

method

in

picocli.CommandLine$ExecutionException

@Test
public void testCallWithFactory() {
  Runnable[] variations = new Runnable[] {
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), "-x", "a");}},
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), System.out, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), System.out, Help.Ansi.OFF, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), System.out, System.out, Help.Ansi.OFF, "-x", "a");}},
  };
  for (Runnable r : variations) {
    try {
      r.run();
    } catch (ExecutionException ex) {
      assertTrue(ex.getMessage().startsWith("Error while calling command (picocli.CommandLineParseWithHandlersTest$MyCallable"));
      assertTrue(ex.getCause() instanceof IllegalStateException);
      assertEquals("this is a test", ex.getCause().getMessage());
    }
  }
}

@Test
public void testRunWithFactory() {
  Runnable[] variations = new Runnable[] {
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), "-x", "a");}},
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), System.out, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), System.out, Help.Ansi.OFF, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), System.out, System.out, Help.Ansi.OFF, "-x", "a");}},
  };
  for (Runnable r : variations) {
    try {
      r.run();
    } catch (ExecutionException ex) {
      assertTrue(ex.getMessage(), ex.getMessage().startsWith("Error while running command (picocli.CommandLineParseWithHandlersTest$MyRunnable"));
      assertTrue(ex.getCause() instanceof IllegalStateException);
      assertEquals("this is a test", ex.getCause().getMessage());
    }
  }
}

@Test
public void testCommandMethodsWhereConstructorThrowsException() {
  try {
    CommandLine.invoke("cannotBeCalled", ErroringCommand.class);
  } catch (ExecutionException ex) { // InvocationTargetException when invoking constructor
    assertTrue(ex.getCause() instanceof IllegalStateException);
    assertTrue(ex.getMessage(), ex.getMessage().startsWith("Error while calling command ("));
  }
}

  @Override
  public R handleExecutionException(ExecutionException ex, ParseResult parseResult) {
    // find top level command
    CommandLine cmdLine = ex.getCommandLine();
    while (cmdLine.getParent() != null) {
      cmdLine = cmdLine.getParent();
    }
    JetCommandLine jetCmd = cmdLine.getCommand();
    if (jetCmd.isVerbose) {
      ex.printStackTrace(err());
    } else {
      err().println("ERROR: " + ex.getCause().getMessage());
      err().println();
      err().println("To see the full stack trace, re-run with the -v/--verbose option");
    }
    if (hasExitCode()) {
      exit(exitCode());
    }
    throw ex;
  }
}

@Test
public void testCallWithFactory() {
  Runnable[] variations = new Runnable[] {
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), "-x", "a");}},
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), System.out, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), System.out, Help.Ansi.OFF, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.call(MyCallable.class, new InnerClassFactory(this), System.out, System.out, Help.Ansi.OFF, "-x", "a");}},
  };
  for (Runnable r : variations) {
    try {
      r.run();
    } catch (ExecutionException ex) {
      assertTrue(ex.getMessage().startsWith("Error while calling command (picocli.CommandLineParseWithHandlersTest$MyCallable"));
      assertTrue(ex.getCause() instanceof IllegalStateException);
      assertEquals("this is a test", ex.getCause().getMessage());
    }
  }
}

@Test
public void testRunWithFactory() {
  Runnable[] variations = new Runnable[] {
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), "-x", "a");}},
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), System.out, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), System.out, Help.Ansi.OFF, "-x", "a");}},
      new Runnable() {public void run() {CommandLine.run(MyRunnable.class, new InnerClassFactory(this), System.out, System.out, Help.Ansi.OFF, "-x", "a");}},
  };
  for (Runnable r : variations) {
    try {
      r.run();
    } catch (ExecutionException ex) {
      assertTrue(ex.getMessage(), ex.getMessage().startsWith("Error while running command (picocli.CommandLineParseWithHandlersTest$MyRunnable"));
      assertTrue(ex.getCause() instanceof IllegalStateException);
      assertEquals("this is a test", ex.getCause().getMessage());
    }
  }
}

@Test
public void testCommandMethodsThatThrowsException() {
  try {
    CommandLine.invoke("throwsOtherException", StaticMethodCommand.class);
  } catch (ExecutionException ex) {
    assertTrue(ex.getCause() instanceof IndexOutOfBoundsException);
  }
}

@Test
public void testCommandMethodsRequireNonArgConstructor() {
  try {
    CommandLine.invoke("cannotBeCalled", StaticMethodCommand.class);
  } catch (ExecutionException ex) {
    assertTrue(ex.getCause() instanceof UnsupportedOperationException);
  }
}

  @Override
  public Object handleExecutionException(ExecutionException ex, ParseResult parseResult) {
    if (ex.getCause() instanceof KarateException) {
      throw new ExecutionException(cmd, ex.getCause().getMessage()); // minimum possible stack trace but exit code 1
    } else {
      throw ex;
    }
  }
};

@Test
public void testCommandMethodsWhereConstructorThrowsException() {
  try {
    CommandLine.invoke("cannotBeCalled", ErroringCommand.class);
  } catch (ExecutionException ex) { // InvocationTargetException when invoking constructor
    assertTrue(ex.getCause() instanceof IllegalStateException);
    assertTrue(ex.getMessage(), ex.getMessage().startsWith("Error while calling command ("));
  }
}

@Test
public void testCommandMethodsThatThrowsException() {
  try {
    CommandLine.invoke("throwsOtherException", StaticMethodCommand.class);
  } catch (ExecutionException ex) {
    assertTrue(ex.getCause() instanceof IndexOutOfBoundsException);
  }
}

@Test
public void testCommandMethodsRequireNonArgConstructor() {
  try {
    CommandLine.invoke("cannotBeCalled", StaticMethodCommand.class);
  } catch (ExecutionException ex) {
    assertTrue(ex.getCause() instanceof UnsupportedOperationException);
  }
}