Add a unit test for single user case as well

tests/lib/share/MailNotificationsTest.php

@@ -125,19 +125,21 @@ class MailNotificationsTest extends \Test\TestCase {
 
 	public function dataSendLinkShareMailWithReplyTo() {
 		return [
-			['lukas@owncloud.com nickvergessen@owncloud.com'],
-			['lukas@owncloud.com,nickvergessen@owncloud.com'],
-			['lukas@owncloud.com, nickvergessen@owncloud.com'],
-			['lukas@owncloud.com;nickvergessen@owncloud.com'],
-			['lukas@owncloud.com; nickvergessen@owncloud.com'],
+			['lukas@owncloud.com', ['lukas@owncloud.com']],
+			['lukas@owncloud.com nickvergessen@owncloud.com', ['lukas@owncloud.com', 'nickvergessen@owncloud.com']],
+			['lukas@owncloud.com,nickvergessen@owncloud.com', ['lukas@owncloud.com', 'nickvergessen@owncloud.com']],
+			['lukas@owncloud.com, nickvergessen@owncloud.com', ['lukas@owncloud.com', 'nickvergessen@owncloud.com']],
+			['lukas@owncloud.com;nickvergessen@owncloud.com', ['lukas@owncloud.com', 'nickvergessen@owncloud.com']],
+			['lukas@owncloud.com; nickvergessen@owncloud.com', ['lukas@owncloud.com', 'nickvergessen@owncloud.com']],
 		];
 	}
 
 	/**
 	 * @dataProvider dataSendLinkShareMailWithReplyTo
 	 * @param string $to
+	 * @param array $expectedTo
 	 */
-	public function testSendLinkShareMailWithReplyTo($to) {
+	public function testSendLinkShareMailWithReplyTo($to, array $expectedTo) {
 		$message = $this->getMockBuilder('\OC\Mail\Message')
 			->disableOriginalConstructor()->getMock();
 
@@ -148,7 +150,7 @@ class MailNotificationsTest extends \Test\TestCase {
 		$message
 			->expects($this->once())
 			->method('setTo')
-			->with(['lukas@owncloud.com', 'nickvergessen@owncloud.com']);
+			->with($expectedTo);
 		$message
 			->expects($this->once())
 			->method('setHtmlBody');