Add unit tests for wrapStorage

lib/private/encryption/util.php

@@ -26,7 +26,6 @@ use OC\Encryption\Exceptions\EncryptionHeaderKeyExistsException;
 use OC\Encryption\Exceptions\EncryptionHeaderToLargeException;
 use OC\Encryption\Exceptions\ModuleDoesNotExistsException;
 use OC\Files\Filesystem;
-use OC\Files\Storage\Shared;
 use OC\Files\Storage\Wrapper\Encryption;
 use OC\Files\View;
 use OCP\Encryption\IEncryptionModule;
@@ -404,7 +403,7 @@ class Util {
 			'mountPoint' => $mountPoint,
 			'mount' => $mount];
 
-		if (!($storage instanceof Shared)) {
+		if (!$storage->instanceOfStorage('OC\Files\Storage\Shared')) {
 			$manager = \OC::$server->getEncryptionManager();
 			$user = \OC::$server->getUserSession()->getUser();
 			$logger = \OC::$server->getLogger();

tests/lib/encryption/utiltest.php

@@ -194,4 +194,49 @@ class UtilTest extends TestCase {
 		);
 	}
 
+	/**
+	 * @dataProvider provideWrapStorage
+	 */
+	public function testWrapStorage($expectedWrapped, $wrappedStorages) {
+		$storage = $this->getMockBuilder('OC\Files\Storage\Storage')
+			->disableOriginalConstructor()
+			->getMock();
+
+		foreach ($wrappedStorages as $wrapper) {
+			$storage->expects($this->any())
+				->method('instanceOfStorage')
+				->willReturnMap([
+					[$wrapper, true],
+				]);
+		}
+
+		$mount = $this->getMockBuilder('OCP\Files\Mount\IMountPoint')
+			->disableOriginalConstructor()
+			->getMock();
+
+		$returnedStorage = $this->util->wrapStorage('mountPoint', $storage, $mount);
+
+		$this->assertEquals(
+			$expectedWrapped,
+			$returnedStorage->instanceOfStorage('OC\Files\Storage\Wrapper\Encryption'),
+			'Asserted that the storage is (not) wrapped with encryption'
+		);
+	}
+
+	public function provideWrapStorage() {
+		return [
+			// Wrap when not wrapped or not wrapped with storage
+			[true, []],
+			[true, ['OCA\Files_Trashbin\Storage']],
+
+			// Do not wrap shared storages
+			[false, ['OC\Files\Storage\Shared']],
+			[false, ['OCA\Files_Sharing\External\Storage']],
+			[false, ['OC\Files\Storage\OwnCloud']],
+			[false, ['OC\Files\Storage\Shared', 'OCA\Files_Sharing\External\Storage']],
+			[false, ['OC\Files\Storage\Shared', 'OC\Files\Storage\OwnCloud']],
+			[false, ['OCA\Files_Sharing\External\Storage', 'OC\Files\Storage\OwnCloud']],
+			[false, ['OC\Files\Storage\Shared', 'OCA\Files_Sharing\External\Storage', 'OC\Files\Storage\OwnCloud']],
+		];
+	}
 }