text: var passthru = require('..');
  
  setTimeout(function() {
    process.exit(0);
  }, 100);
  
  passthru(['/bin/bash', '-c', 'exit 42'], function(err) {
    if (!err || err.code !== 42) {
      // expected an error, but got none
      process.exit(1);
    }
  });
  