diff --git a/tests/lib/Files/Type/DetectionTest.php b/tests/lib/Files/Type/DetectionTest.php
index 1d01a96fcc..c6dded1f6f 100644
--- a/tests/lib/Files/Type/DetectionTest.php
+++ b/tests/lib/Files/Type/DetectionTest.php
@@ -37,61 +37,96 @@ class DetectionTest extends \Test\TestCase {
 		);
 	}
 
-	public function testDetect() {
-		$dir = \OC::$SERVERROOT.'/tests/data';
-
-		$result = $this->detection->detect($dir."/");
-		$expected = 'httpd/unix-directory';
-		$this->assertEquals($expected, $result);
-
-		$result = $this->detection->detect($dir."/data.tar.gz");
-		$expected = 'application/x-gzip';
-		$this->assertEquals($expected, $result);
-
-		$result = $this->detection->detect($dir."/data.zip");
-		$expected = 'application/zip';
-		$this->assertEquals($expected, $result);
-
-		$result = $this->detection->detect($dir."/testimagelarge.svg");
-		$expected = 'image/svg+xml';
-		$this->assertEquals($expected, $result);
-
-		$result = $this->detection->detect($dir."/testimage.png");
-		$expected = 'image/png';
-		$this->assertEquals($expected, $result);
+	public function dataDetectPath(): array {
+		return [
+			['foo.txt', 'text/plain'],
+			['foo.png', 'image/png'],
+			['foo.bar.png', 'image/png'],
+			['.hidden.png', 'image/png'],
+			['.hidden.foo.png', 'image/png'],
+			['.hidden/foo.png', 'image/png'],
+			['.hidden/.hidden.png', 'image/png'],
+			['test.jpg/foo.png', 'image/png'],
+			['.png', 'application/octet-stream'],
+			['..hidden', 'application/octet-stream'],
+			['foo', 'application/octet-stream'],
+			['', 'application/octet-stream'],
+			['foo.png.ocTransferId123456789.part', 'image/png'],
+			['foo.png.v1234567890', 'image/png'],
+		];
 	}
 
-	public function testGetSecureMimeType() {
-		$result = $this->detection->getSecureMimeType('image/svg+xml');
+	/**
+	 * @dataProvider dataDetectPath
+	 *
+	 * @param string $path
+	 * @param string $expected
+	 */
+	public function testDetectPath(string $path, string $expected): void {
+		$this->assertEquals($expected, $this->detection->detectPath($path));
+	}
+
+	public function dataDetectContent(): array {
+		return [
+			['/', 'httpd/unix-directory'],
+			['/data.tar.gz', 'application/x-gzip'],
+			['/data.zip', 'application/zip'],
+			['/testimage.mp3', 'audio/mpeg'],
+			['/testimage.png', 'image/png'],
+		];
+	}
+
+	/**
+	 * @dataProvider dataDetectContent
+	 *
+	 * @param string $path
+	 * @param string $expected
+	 */
+	public function testDetectContent(string $path, string $expected): void {
+		$this->assertEquals($expected, $this->detection->detectContent(\OC::$SERVERROOT . '/tests/data' . $path));
+	}
+
+	public function dataDetect(): array {
+		return [
+			['/', 'httpd/unix-directory'],
+			['/data.tar.gz', 'application/x-gzip'],
+			['/data.zip', 'application/zip'],
+			['/testimagelarge.svg', 'image/svg+xml'],
+			['/testimage.png', 'image/png'],
+		];
+	}
+
+	/**
+	 * @dataProvider dataDetect
+	 *
+	 * @param string $path
+	 * @param string $expected
+	 */
+	public function testDetect(string $path, string $expected): void {
+		$this->assertEquals($expected, $this->detection->detect(\OC::$SERVERROOT . '/tests/data' . $path));
+	}
+
+	public function testDetectString(): void {
+		$result = $this->detection->detectString('/data/data.tar.gz');
 		$expected = 'text/plain';
 		$this->assertEquals($expected, $result);
-
-		$result = $this->detection->getSecureMimeType('image/png');
-		$expected = 'image/png';
-		$this->assertEquals($expected, $result);
 	}
 
-	public function testDetectPath() {
-		$this->assertEquals('text/plain', $this->detection->detectPath('foo.txt'));
-		$this->assertEquals('image/png', $this->detection->detectPath('foo.png'));
-		$this->assertEquals('image/png', $this->detection->detectPath('foo.bar.png'));
-		$this->assertEquals('image/png', $this->detection->detectPath('.hidden.png'));
-		$this->assertEquals('image/png', $this->detection->detectPath('.hidden.foo.png'));
-		$this->assertEquals('image/png', $this->detection->detectPath('.hidden/foo.png'));
-		$this->assertEquals('image/png', $this->detection->detectPath('.hidden/.hidden.png'));
-		$this->assertEquals('image/png', $this->detection->detectPath('test.jpg/foo.png'));
-		$this->assertEquals('application/octet-stream', $this->detection->detectPath('.png'));
-		$this->assertEquals('application/octet-stream', $this->detection->detectPath('..hidden'));
-		$this->assertEquals('application/octet-stream', $this->detection->detectPath('foo'));
-		$this->assertEquals('application/octet-stream', $this->detection->detectPath(''));
-		$this->assertEquals('image/png', $this->detection->detectPath('foo.png.ocTransferId123456789.part'));
-		$this->assertEquals('image/png', $this->detection->detectPath('foo.png.v1234567890'));
+	public function dataGetSecureMimeType(): array {
+		return [
+			['image/svg+xml', 'text/plain'],
+			['image/png', 'image/png'],
+		];
 	}
 
-	public function testDetectString() {
-		$result = $this->detection->detectString("/data/data.tar.gz");
-		$expected = 'text/plain';
-		$this->assertEquals($expected, $result);
+	/**
+	 * @dataProvider dataGetSecureMimeType
+	 *
+	 * @param string $mimeType
+	 * @param string $expected
+	 */
+	public function testGetSecureMimeType(string $mimeType, string $expected): void {
+		$this->assertEquals($expected, $this->detection->getSecureMimeType($mimeType));
 	}
 
 	public function testMimeTypeIcon() {