Update master php testing versions (#188)

Update master php testing versions

Author: juliusknorr

.travis.yml

@@ -1,8 +1,8 @@
 language: php
 php:
-  - 7.1
   - 7.2
   - 7.3
+  - 7.4snapshot
 
 env:
   global:

tests/Controller/FileHandlingControllerTest.php

@@ -54,7 +54,7 @@ class FileHandlingControllerTest extends TestCase {
 	/** @var Folder|\PHPUnit_Framework_MockObject_MockObject */
 	private $userFolderMock;
 
-	public function setUp() {
+	protected function setUp(): void {
 		parent::setUp();
 		$this->appName = 'files_texteditor';
 		$this->requestMock = $this->createMock(IRequest::class);

tests/SyntaxModeTest.php

@@ -26,7 +26,7 @@
 
 class SyntaxModeTest extends TestCase
 {
-    public function setUp() {
+    protected function setUp(): void {
         parent::setUp();
     }