chore: adjust for old PHP

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

tests/lib/Preview/Provider.php

@@ -22,6 +22,9 @@
 namespace Test\Preview;
 
 use OC\Files\Node\File;
+use OC\Preview\Provider as PreviewProvider;
+use OCP\Files\IRootFolder;
+use OCP\Preview\IProviderV2;
 
 abstract class Provider extends \Test\TestCase {
 
@@ -31,7 +34,7 @@ abstract class Provider extends \Test\TestCase {
 	protected $width;
 	/** @var int */
 	protected $height;
-	/** @var \OC\Preview\Provider */
+	/** @var IProviderV2|PreviewProvider */
 	protected $provider;
 	/** @var int */
 	protected $maxWidth = 1024;
@@ -138,8 +141,10 @@ protected function prepareTestFile($fileName, $fileContent) {
 	 * @return bool|\OCP\IImage
 	 */
 	private function getPreview($provider) {
-		$file = new File(\OC::$server->getRootFolder(), $this->rootView, $this->imgPath);
-		$preview = $provider->getThumbnail($file, $this->maxWidth, $this->maxHeight, $this->scalingUp);
+		$file = new File(\OC::$server->get(IRootFolder::class), $this->rootView, $this->imgPath);
+		$preview = ($provider instanceof PreviewProvider)
+			? $provider->getThumbnail($file, $this->maxWidth, $this->maxHeight, $this->scalingUp, $this->rootView)
+			: $provider->getThumbnail($file, $this->maxWidth, $this->maxHeight, $this->scalingUp);
 
 		if (get_class($this) === BitmapTest::class && $preview === null) {
 			$this->markTestSkipped('An error occured while operating with Imagick.');

tests/lib/Preview/SVGTest.php

@@ -21,6 +21,8 @@
 
 namespace Test\Preview;
 
+use OCP\Files\File;
+
 /**
  * Class SVGTest
  *
@@ -66,7 +68,7 @@ public function testGetThumbnailSVGHref(string $content): void {
 </svg>');
 		rewind($handle);
 
-		$file = $this->createMock(\OCP\Files\File::class);
+		$file = $this->createMock(File::class);
 		$file->method('fopen')
 			->willReturn($handle);