Alex\MailCatcher\Behat\MailCatcherContext::seeInMail PHP Method

    public function seeInMail($text)
    {
        $message = $this->getCurrentMessage();
        if (!$message->isMultipart()) {
            $content = $message->getContent();
        } elseif ($message->hasPart('text/html')) {
            $content = $this->getCrawler($message)->text();
        } elseif ($message->hasPart('text/plain')) {
            $content = $message->getPart('text/plain')->getContent();
        } else {
            throw new \RuntimeException(sprintf('Unable to read mail'));
        }
        if (false === strpos($content, $text)) {
            throw new \InvalidArgumentException(sprintf("Unable to find text \"%s\" in current message:\n%s", $text, $message->getContent()));
        }
    }