Update master php testing versions

Signed-off-by: Joas Schilling <coding@schilljs.com>

Author: nickvergessen

.travis.yml

@@ -1,9 +1,9 @@
 language: php
 sudo: required
 php:
-  - 7.1
   - 7.2
   - 7.3
+  - 7.4snapshot
 
 services:
   - mysql
@@ -56,13 +56,13 @@ script:
 
 matrix:
   include:
-    - php: 7.1
+    - php: 7.3
       env: DB=mysql
-    - php: 7.1
+    - php: 7.3
       env: DB=pgsql
-    - php: 7.1
+    - php: 7.3
       env: DB=mysql;CODECHECK=1
-    - php: 7.1
+    - php: 7.3
       env: DB=mysql;CODECHECK=2
   fast_finish: true
 

tests/unit/controller/displaycontrollertest.php renamed to tests/Unit/Controller/DisplayControllerTest.php

@@ -8,8 +8,9 @@
  * See the COPYING-README file.
  */
 
-namespace OCA\Files_PdfViewer\Controller;
+namespace OCA\Files_PdfViewer\Tests\Unit\Controller;
 
+use OCA\Files_PdfViewer\Controller\DisplayController;
 use OCP\AppFramework\Http\ContentSecurityPolicy;
 use OCP\AppFramework\Http\TemplateResponse;
 use OCP\IRequest;
@@ -23,20 +24,15 @@ class DisplayControllerTest extends TestCase {
 	private $request;
 	/** @var IURLGenerator */
 	private $urlGenerator;
-	/** @var DisplayController */
+	/** @var DisplayController
+	 */
 	private $controller;
 
-	public function setUp(){
+	protected function setUp(): void {
 		$this->appName = 'files_pdfviewer';
 
-		$this->request = $this->getMockBuilder(
-			'\OCP\IRequest')
-			->disableOriginalConstructor()
-			->getMock();
-		$this->urlGenerator = $this->getMockBuilder(
-			'\OCP\IUrlGenerator')
-			->disableOriginalConstructor()
-			->getMock();
+		$this->request = $this->createMock(IRequest::class);
+		$this->urlGenerator = $this->createMock(IURLGenerator::class);
 		$this->controller = new DisplayController(
 			$this->appName,
 			$this->request,
@@ -46,7 +42,7 @@ public function setUp(){
 		parent::setUp();
 	}
 
-	public function testShowPdfViewer() {
+	public function testShowPdfViewer(): void {
 		$params = [
 			'urlGenerator' => $this->urlGenerator,
 			'minmode' => false