public function testGui()
{
$env = getenv('PATH');
putenv('PATH=' . $env . ':' . __DIR__ . '/bin');
$process = $this->phpbench('xdebug:profile benchmarks/set1/BenchmarkBench.php --gui --gui-bin=foogrind');
putenv('PATH=' . $env);
$this->assertExitCode(0, $process);
}