mageekguy\atoum\test::runEngine PHP Method

    private function runEngine()
    {
        $engine = reset($this->runTestMethods);
        if ($engine !== false) {
            $this->currentMethod = key($this->runTestMethods);
            if ($this->canRunEngine($engine) === true) {
                unset($this->runTestMethods[$this->currentMethod]);
                $this->engines[$this->currentMethod] = $engine->run($this->callObservers(self::beforeTestMethod));
                if ($engine->isAsynchronous() === true) {
                    $this->asynchronousEngines++;
                }
            }
            $this->currentMethod = null;
        }
        return $this;
    }