ProtobufTest\ProtocSerializeMessageTest::executeProtoc PHP Метод

    protected function executeProtoc($input, $class, $proto)
    {
        $path = __DIR__ . '/Resources';
        $command = "echo '{$input}' | protoc --encode={$class} -I{$path} {$path}/{$proto}.proto";
        $output = null;
        $exitCode = null;
        exec($command, $output, $exitCode);
        if ($exitCode !== 0) {
            $this->fail("Fail to run protoc : [{$command}]");
        }
        return implode(PHP_EOL, $output);
    }