Mail: check if the function mail() exists [Closes #52]

Author: mzk

src/Mail/SendmailMailer.php

@@ -29,6 +29,9 @@ class SendmailMailer implements IMailer
 	 */
 	public function send(Message $mail): void
 	{
+		if (!function_exists('mail')) {
+			throw new SendException('Unable to send email: mail() has been disabled.');
+		}
 		$tmp = clone $mail;
 		$tmp->setHeader('Subject', null);
 		$tmp->setHeader('To', null);

tests/Mail/SendmailMailer.phpt

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @phpIni disable_functions=mail
+ */
+
+declare(strict_types=1);
+
+use Nette\Mail\Message;
+use Tester\Assert;
+
+require __DIR__ . '/../bootstrap.php';
+
+
+Assert::exception(function () {
+	$sendmailMailer = new Nette\Mail\SendmailMailer;
+	$message = new Message();
+	$sendmailMailer->send($message);
+}, Nette\Mail\SendException::class, 'Unable to send email: mail() has been disabled.');