Fix tests

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

lib/private/Mail/EMailTemplate.php

@@ -555,7 +555,7 @@ EOF;
 	 *
 	 * @since 12.0.0
 	 */
-	public function addBodyButton(string $text, string $url, string $plainText = '') {
+	public function addBodyButton(string $text, string $url, $plainText = '') {
 		if ($this->footerAdded) {
 			return;
 		}

lib/public/Mail/IEMailTemplate.php

@@ -132,7 +132,7 @@ interface IEMailTemplate {
 	 *
 	 * @since 12.0.0
 	 */
-	public function addBodyButton(string $text, string $url, string $plainText = '');
+	public function addBodyButton(string $text, string $url, $plainText = '');
 
 	/**
 	 * Adds a logo and a text to the footer. <br> in the text will be replaced by new lines in the plain text email

tests/lib/Mail/MailerTest.php

@@ -133,6 +133,10 @@ class MailerTest extends TestCase {
 	}
 
 	public function testCreateEMailTemplate() {
+		$this->config->method('getSystemValue')
+			->with('mail_template_class', '')
+			->willReturnArgument(1);
+
 		$this->assertSame(EMailTemplate::class, get_class($this->mailer->createEMailTemplate('tests.MailerTest')));
 	}
 }

tests/lib/Mail/MessageTest.php

@@ -30,7 +30,7 @@ class MessageTest extends TestCase {
 		);
 	}
 
-	function setUp() {
+	public function setUp() {
 		parent::setUp();
 
 		$this->swiftMessage = $this->getMockBuilder('\Swift_Message')
@@ -79,9 +79,9 @@ class MessageTest extends TestCase {
 		$this->swiftMessage
 			->expects($this->once())
 			->method('getReplyTo')
-			->will($this->returnValue(['lukas@owncloud.com']));
+			->willReturn('lukas@owncloud.com');
 
-		$this->assertSame(['lukas@owncloud.com'], $this->message->getReplyTo());
+		$this->assertSame('lukas@owncloud.com', $this->message->getReplyTo());
 	}
 
 	public function testSetTo() {