ApplicationContext::checkApplicationOutput PHP Method

    private function checkApplicationOutput($output)
    {
        $expected = $this->normalize($output);
        $actual = $this->normalize($this->tester->getDisplay(true));
        if (strpos($actual, $expected) === false) {
            throw new \Exception(sprintf("Application output did not contain expected '%s'. Actual output:\n'%s'", $expected, $this->tester->getDisplay()));
        }
    }