[Share 2.0] Allow registering of share providers

* Properly register the default share provider

apps/files_sharing/api/ocssharewrapper.php

@@ -26,22 +26,34 @@ class OCSShareWrapper {
 	 * @return Share20OCS
 	 */
 	private function getShare20OCS() {
-		return new Share20OCS(
+		$manager =new \OC\Share20\Manager(
-			new \OC\Share20\Manager(
+			\OC::$server->getLogger(),
-				\OC::$server->getLogger(),
+			\OC::$server->getConfig(),
-				\OC::$server->getConfig(),
+			\OC::$server->getSecureRandom(),
-				new \OC\Share20\DefaultShareProvider(
+			\OC::$server->getHasher(),
+			\OC::$server->getMountManager(),
+			\OC::$server->getGroupManager(),
+			\OC::$server->getL10N('core')
+		);
+
+		$manager->registerProvider('ocdefault',
+			[
+				\OCP\Share::SHARE_TYPE_USER,
+				\OCP\SHARE::SHARE_TYPE_GROUP,
+				\OCP\SHARE::SHARE_TYPE_LINK
+			],
+			function() {
+				return new \OC\Share20\DefaultShareProvider(
 					\OC::$server->getDatabaseConnection(),
 					\OC::$server->getUserManager(),
 					\OC::$server->getGroupManager(),
 					\OC::$server->getRootFolder()
-				),
+				);
-				\OC::$server->getSecureRandom(),
+			}
-				\OC::$server->getHasher(),
+			);
-				\OC::$server->getMountManager(),
+
-				\OC::$server->getGroupManager(),
+		return new Share20OCS(
-				\OC::$server->getL10N('core')
+			$manager,
-			),
 			\OC::$server->getGroupManager(),
 			\OC::$server->getUserManager(),
 			\OC::$server->getRequest(),

lib/private/share20/exception/providerexception.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @author Roeland Jago Douma <rullzer@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+namespace OC\Share20\Exception;
+
+
+class ProviderException extends \Exception {
+
+}
+

lib/private/share20/manager.php

@@ -21,6 +21,7 @@
 namespace OC\Share20;
 
 
+use OC\Share20\Exception\ProviderException;
 use OCP\IConfig;
 use OCP\IL10N;
 use OCP\ILogger;
@@ -40,8 +41,11 @@ use OC\HintException;
  */
 class Manager {
 
-	/** @var IShareProvider[] */
+	/** @var array */
-	private $defaultProvider;
+	private $providers;
+
+	/** @var array */
+	private $type2provider;
 
 	/** @var ILogger */
 	private $logger;
@@ -69,7 +73,6 @@ class Manager {
 	 *
 	 * @param ILogger $logger
 	 * @param IConfig $config
-	 * @param IShareProvider $defaultProvider
 	 * @param ISecureRandom $secureRandom
 	 * @param IHasher $hasher
 	 * @param IMountManager $mountManager
@@ -79,13 +82,15 @@ class Manager {
 	public function __construct(
 			ILogger $logger,
 			IConfig $config,
-			IShareProvider $defaultProvider,
 			ISecureRandom $secureRandom,
 			IHasher $hasher,
 			IMountManager $mountManager,
 			IGroupManager $groupManager,
 			IL10N $l
 	) {
+		$this->providers = [];
+		$this->type2provider = [];
+
 		$this->logger = $logger;
 		$this->config = $config;
 		$this->secureRandom = $secureRandom;
@@ -93,9 +98,95 @@ class Manager {
 		$this->mountManager = $mountManager;
 		$this->groupManager = $groupManager;
 		$this->l = $l;
+	}
 
-		// TEMP SOLUTION JUST TO GET STARTED
+	/**
-		$this->defaultProvider = $defaultProvider;
+	 * Register a share provider
+	 *
+	 * @param string $id The id of the share provider
+	 * @param int[] $shareTypes Array containing the share types this provider handles
+	 * @param callable $callback Callback that must return an IShareProvider instance
+	 * @throws ProviderException
+	 */
+	public function registerProvider($id, $shareTypes, callable $callback) {
+		// Providers must have an unique id
+		if (isset($this->providers[$id])) {
+			throw new ProviderException('A share provider with the id \''. $id . '\' is already registered');
+		}
+
+		if ($shareTypes === []) {
+			throw new ProviderException('shareTypes can\'t be an empty array');
+		}
+
+		foreach($shareTypes as $shareType) {
+			// We only have 1 provder per share type
+			if (isset($this->type2provider[$shareType])) {
+				throw new ProviderException('The share provider ' . $this->type2provider[$shareType] . ' is already registered for share type ' . $shareType);
+			}
+
+			/*
+			 * We only allow providers that provider
+			 * user- / group- / link- / federated-shares
+			 */
+			if ($shareType !== \OCP\Share::SHARE_TYPE_USER &&
+				$shareType !== \OCP\Share::SHARE_TYPE_GROUP &&
+				$shareType !== \OCP\Share::SHARE_TYPE_LINK &&
+				$shareType !== \OCP\Share::SHARE_TYPE_REMOTE) {
+				throw new ProviderException('Cannot register provider for share type ' . $shareType);
+				//Throw exception
+			}
+		}
+
+		// Add the provider
+		$this->providers[$id] = [
+			'id' => $id,
+			'callback' => $callback,
+			'provider' => null,
+			'shareTypes' => $shareTypes,
+		];
+
+		// Update the type mapping
+		foreach ($shareTypes as $shareType) {
+			$this->type2provider[$shareType] = $id;
+		}
+	}
+
+	/**
+	 * @param string $id
+	 * @return IShareProvider
+	 * @throws ProviderException
+	 */
+	private function getProvider($id) {
+		if (!isset($this->providers[$id])) {
+			throw new ProviderException('No provider with id ' . $id . ' found');
+		}
+
+		if ($this->providers[$id]['provider'] === null) {
+			// First time using this provider
+			$provider = call_user_func($this->providers[$id]['callback']);
+
+			// Make sure a proper provider is returned
+			if (!($provider instanceof IShareProvider)) {
+				throw new ProviderException('Callback does not return an IShareProvider instance for provider with id ' . $id);
+			}
+
+			$this->providers[$id]['provider'] = $provider;
+		}
+
+		return $this->providers[$id]['provider'];
+	}
+
+	/**
+	 * @param int $shareType
+	 * @return IShareProvider
+	 * @throws ProviderException
+	 */
+	private function getProviderForType($shareType) {
+		if (!isset($this->type2provider[$shareType])) {
+			throw new ProviderException('No share provider registered for share type ' . $shareType);
+		}
+
+		return $this->getProvider($this->type2provider[$shareType]);
 	}
 
 	/**
@@ -248,7 +339,7 @@ class Manager {
 
 
 	/**
-	 * Check for pre share requirements for use shares
+	 * Check for pre share requirements for user shares
 	 *
 	 * @param IShare $share
 	 * @throws \Exception
@@ -271,7 +362,8 @@ class Manager {
 		 *
 		 * Also this is not what we want in the future.. then we want to squash identical shares.
 		 */
-		$existingShares = $this->defaultProvider->getSharesByPath($share->getPath());
+		$provider = $this->getProviderForType(\OCP\Share::SHARE_TYPE_USER);
+		$existingShares = $provider->getSharesByPath($share->getPath());
 		foreach($existingShares as $existingShare) {
 			// Identical share already existst
 			if ($existingShare->getSharedWith() === $share->getSharedWith()) {
@@ -306,7 +398,8 @@ class Manager {
 		 *
 		 * Also this is not what we want in the future.. then we want to squash identical shares.
 		 */
-		$existingShares = $this->defaultProvider->getSharesByPath($share->getPath());
+		$provider = $this->getProviderForType(\OCP\Share::SHARE_TYPE_GROUP);
+		$existingShares = $provider->getSharesByPath($share->getPath());
 		foreach($existingShares as $existingShare) {
 			if ($existingShare->getSharedWith() === $share->getSharedWith()) {
 				throw new \Exception('Path already shared with this group');
@@ -456,7 +549,8 @@ class Manager {
 			throw new \Exception($error);
 		}
 
-		$share = $this->defaultProvider->create($share);
+		$provider = $this->getProviderForType($share->getShareType());
+		$share = $provider->create($share);
 
 		// Post share hook
 		$postHookData = [
@@ -492,12 +586,18 @@ class Manager {
 	 */
 	protected function deleteChildren(IShare $share) {
 		$deletedShares = [];
-		foreach($this->defaultProvider->getChildren($share) as $child) {
-			$deletedChildren = $this->deleteChildren($child);
-			$deletedShares = array_merge($deletedShares, $deletedChildren);
 
-			$this->defaultProvider->delete($child);
+		$providerIds = array_keys($this->providers);
-			$deletedShares[] = $child;
+
+		foreach($providerIds as $providerId) {
+			$provider = $this->getProvider($providerId);
+			foreach ($provider->getChildren($share) as $child) {
+				$deletedChildren = $this->deleteChildren($child);
+				$deletedShares = array_merge($deletedShares, $deletedChildren);
+
+				$provider->delete($child);
+				$deletedShares[] = $child;
+			}
 		}
 
 		return $deletedShares;
@@ -549,7 +649,8 @@ class Manager {
 		$deletedShares = $this->deleteChildren($share);
 
 		// Do the actual delete
-		$this->defaultProvider->delete($share);
+		$provider = $this->getProviderForType($share->getShareType());
+		$provider->delete($share);
 
 		// All the deleted shares caused by this delete
 		$deletedShares[] = $share;
@@ -588,7 +689,26 @@ class Manager {
 			throw new ShareNotFound();
 		}
 
-		$share = $this->defaultProvider->getShareById($id);
+		//FIXME ids need to become proper providerid:shareid eventually
+
+		$providerIds = array_keys($this->providers);
+
+		$share = null;
+		foreach ($providerIds as $providerId) {
+			$provider = $this->getProvider($providerId);
+
+			try {
+				$share = $provider->getShareById($id);
+				$found = true;
+				break;
+			} catch (ShareNotFound $e) {
+				// Ignore
+			}
+		}
+
+		if ($share === null) {
+			throw new ShareNotFound();
+		}
 
 		return $share;
 	}

tests/lib/share20/managertest.php

@@ -86,13 +86,22 @@ class ManagerTest extends \Test\TestCase {
 		$this->manager = new Manager(
 			$this->logger,
 			$this->config,
-			$this->defaultProvider,
 			$this->secureRandom,
 			$this->hasher,
 			$this->mountManager,
 			$this->groupManager,
 			$this->l
 		);
+		$this->manager->registerProvider('tmp',
+			[
+				\OCP\SHARE::SHARE_TYPE_USER,
+				\OCP\Share::SHARE_TYPE_GROUP,
+				\OCP\Share::SHARE_TYPE_LINK
+			],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
 	}
 
 	/**
@@ -133,7 +142,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -143,6 +151,13 @@ class ManagerTest extends \Test\TestCase {
 			->setMethods(['getShareById', 'deleteChildren'])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[$shareType],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$sharedBy = $this->getMock('\OCP\IUser');
 		$sharedBy->method('getUID')->willReturn('sharedBy');
 
@@ -224,7 +239,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -234,6 +248,15 @@ class ManagerTest extends \Test\TestCase {
 			->setMethods(['getShareById'])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[
+				\OCP\Share::SHARE_TYPE_USER
+			],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$sharedBy1 = $this->getMock('\OCP\IUser');
 		$sharedBy1->method('getUID')->willReturn('sharedBy1');
 		$sharedBy2 = $this->getMock('\OCP\IUser');
@@ -369,7 +392,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -379,6 +401,13 @@ class ManagerTest extends \Test\TestCase {
 			->setMethods(['deleteShare'])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[\OCP\Share::SHARE_TYPE_USER],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$share = $this->getMock('\OC\Share20\IShare');
 
 		$child1 = $this->getMock('\OC\Share20\IShare');
@@ -1156,7 +1185,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -1185,7 +1213,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -1205,7 +1232,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -1215,6 +1241,13 @@ class ManagerTest extends \Test\TestCase {
 			->setMethods(['canShare', 'generalCreateChecks', 'userCreateChecks', 'pathCreateChecks'])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[\OCP\Share::SHARE_TYPE_USER],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$sharedWith = $this->getMock('\OCP\IUser');
 		$sharedBy = $this->getMock('\OCP\IUser');
 		$shareOwner = $this->getMock('\OCP\IUser');
@@ -1267,7 +1300,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -1277,6 +1309,13 @@ class ManagerTest extends \Test\TestCase {
 			->setMethods(['canShare', 'generalCreateChecks', 'groupCreateChecks', 'pathCreateChecks'])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[\OCP\Share::SHARE_TYPE_GROUP],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$sharedWith = $this->getMock('\OCP\IGroup');
 		$sharedBy = $this->getMock('\OCP\IUser');
 		$shareOwner = $this->getMock('\OCP\IUser');
@@ -1329,7 +1368,7 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
+
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -1346,6 +1385,13 @@ class ManagerTest extends \Test\TestCase {
 			])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[\OCP\Share::SHARE_TYPE_LINK],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$sharedBy = $this->getMock('\OCP\IUser');
 		$sharedBy->method('getUID')->willReturn('sharedBy');
 		$shareOwner = $this->getMock('\OCP\IUser');
@@ -1470,7 +1516,6 @@ class ManagerTest extends \Test\TestCase {
 			->setConstructorArgs([
 				$this->logger,
 				$this->config,
-				$this->defaultProvider,
 				$this->secureRandom,
 				$this->hasher,
 				$this->mountManager,
@@ -1485,6 +1530,13 @@ class ManagerTest extends \Test\TestCase {
 			])
 			->getMock();
 
+		$manager->registerProvider('tmp',
+			[\OCP\Share::SHARE_TYPE_USER],
+			function() {
+				return $this->defaultProvider;
+			}
+		);
+
 		$sharedWith = $this->getMock('\OCP\IUser');
 		$sharedBy = $this->getMock('\OCP\IUser');
 		$shareOwner = $this->getMock('\OCP\IUser');
@@ -1530,6 +1582,184 @@ class ManagerTest extends \Test\TestCase {
 
 		$manager->createShare($share);
 	}
+
+	public function dataRegisterProvider() {
+		return [
+			[[                                                                                        \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[                                                           \OCP\Share::SHARE_TYPE_LINK,                               ]],
+			[[                                                           \OCP\Share::SHARE_TYPE_LINK, \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[                             \OCP\Share::SHARE_TYPE_GROUP,                                                            ]],
+			[[                             \OCP\Share::SHARE_TYPE_GROUP,                              \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[                             \OCP\Share::SHARE_TYPE_GROUP, \OCP\Share::SHARE_TYPE_LINK,                               ]],
+			[[                             \OCP\Share::SHARE_TYPE_GROUP, \OCP\Share::SHARE_TYPE_LINK, \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[                             \OCP\Share::SHARE_TYPE_GROUP,                                                            ]],
+			[[\OCP\Share::SHARE_TYPE_USER,                                                                                          ]],
+			[[\OCP\Share::SHARE_TYPE_USER,                                                            \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[\OCP\Share::SHARE_TYPE_USER,                               \OCP\Share::SHARE_TYPE_LINK,                               ]],
+			[[\OCP\Share::SHARE_TYPE_USER,                               \OCP\Share::SHARE_TYPE_LINK, \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[\OCP\Share::SHARE_TYPE_USER, \OCP\Share::SHARE_TYPE_GROUP,                                                            ]],
+			[[\OCP\Share::SHARE_TYPE_USER, \OCP\Share::SHARE_TYPE_GROUP,                              \OCP\Share::SHARE_TYPE_REMOTE,]],
+			[[\OCP\Share::SHARE_TYPE_USER, \OCP\Share::SHARE_TYPE_GROUP, \OCP\Share::SHARE_TYPE_LINK,                               ]],
+			[[\OCP\Share::SHARE_TYPE_USER, \OCP\Share::SHARE_TYPE_GROUP, \OCP\Share::SHARE_TYPE_LINK, \OCP\Share::SHARE_TYPE_REMOTE,]],
+		];
+	}
+
+	/**
+	 * @dataProvider dataRegisterProvider
+	 * @param int[] $shareTypes
+	 */
+	public function testRegisterProvider($shareTypes) {
+		$manager = new Manager(
+				$this->logger,
+				$this->config,
+				$this->secureRandom,
+				$this->hasher,
+				$this->mountManager,
+				$this->groupManager,
+				$this->l
+		);
+
+		$provider = $this->getMock('OC\Share20\IShareProvider');
+		$manager->registerProvider('foo', $shareTypes, function() use ($provider) {
+			return $provider;
+		});
+
+		$this->assertEquals($provider, $this->invokePrivate($manager, 'getProvider', ['foo']));
+		foreach ($shareTypes as $shareType) {
+			$this->assertEquals($provider, $this->invokePrivate($manager, 'getProviderForType', [$shareType]));
+		}
+	}
+
+	/**
+	 * @expectedException \OC\Share20\Exception\ProviderException
+	 * @expectedExceptionMessage A share provider with the id 'foo' is already registered
+	 */
+	public function testRegisterProviderDuplicateId() {
+		$manager = new Manager(
+			$this->logger,
+			$this->config,
+			$this->secureRandom,
+			$this->hasher,
+			$this->mountManager,
+			$this->groupManager,
+			$this->l
+		);
+
+		$provider = $this->getMock('OC\Share20\IShareProvider');
+		$manager->registerProvider('foo', [\OCP\Share::SHARE_TYPE_USER], function() use ($provider) {
+			return $provider;
+		});
+		$manager->registerProvider('foo', [\OCP\Share::SHARE_TYPE_USER], function() use ($provider) {
+			return $provider;
+		});
+	}
+
+	/**
+	 * @expectedException \OC\Share20\Exception\ProviderException
+	 * @expectedExceptionMessage shareTypes can't be an empty array
+	 */
+	public function testRegisterProviderEmptyShareTypes() {
+		$manager = new Manager(
+			$this->logger,
+			$this->config,
+			$this->secureRandom,
+			$this->hasher,
+			$this->mountManager,
+			$this->groupManager,
+			$this->l
+		);
+
+		$provider = $this->getMock('OC\Share20\IShareProvider');
+		$manager->registerProvider('foo', [], function() use ($provider) {
+			return $provider;
+		});
+	}
+
+	/**
+	 * @expectedException \OC\Share20\Exception\ProviderException
+	 * @expectedExceptionMessage The share provider foo is already registered for share type 0
+	 */
+	public function testRegisterProviderSameType() {
+		$manager = new Manager(
+			$this->logger,
+			$this->config,
+			$this->secureRandom,
+			$this->hasher,
+			$this->mountManager,
+			$this->groupManager,
+			$this->l
+		);
+
+		$provider = $this->getMock('OC\Share20\IShareProvider');
+		$manager->registerProvider('foo', [\OCP\Share::SHARE_TYPE_USER], function() use ($provider) {
+			return $provider;
+		});
+		$manager->registerProvider('bar', [\OCP\Share::SHARE_TYPE_USER, \OCP\Share::SHARE_TYPE_GROUP], function() use ($provider) {
+			return $provider;
+		});
+	}
+
+	/**
+	 * @expectedException \OC\Share20\Exception\ProviderException
+	 * @expectedExceptionMessage No provider with id foo found
+	 */
+	public function testGetProviderNoProviderWithId() {
+		$manager = new Manager(
+			$this->logger,
+			$this->config,
+			$this->secureRandom,
+			$this->hasher,
+			$this->mountManager,
+			$this->groupManager,
+			$this->l
+		);
+
+		$this->invokePrivate($manager, 'getProvider', ['foo']);
+	}
+
+	/**
+	 * @expectedException \OC\Share20\Exception\ProviderException
+	 * @expectedExceptionMessage Callback does not return an IShareProvider instance for provider with id foo
+	 */
+	public function testGetProviderNoIShareProvider() {
+		$manager = new Manager(
+			$this->logger,
+			$this->config,
+			$this->secureRandom,
+			$this->hasher,
+			$this->mountManager,
+			$this->groupManager,
+			$this->l
+		);
+
+		$provider = $this->getMock('OC\Share20\IShare');
+		$manager->registerProvider('foo', [\OCP\Share::SHARE_TYPE_USER], function() use ($provider) {
+			return $provider;
+		});
+		$this->invokePrivate($manager, 'getProvider', ['foo']);
+	}
+
+	/**
+	 * @expectedException \OC\Share20\Exception\ProviderException
+	 * @expectedExceptionMessage No share provider registered for share type 1
+	 */
+	public function testGetProviderForTypeUnkownType() {
+		$manager = new Manager(
+			$this->logger,
+			$this->config,
+			$this->secureRandom,
+			$this->hasher,
+			$this->mountManager,
+			$this->groupManager,
+			$this->l
+		);
+
+		$provider = $this->getMock('OC\Share20\IShareProvider');
+		$manager->registerProvider('foo', [\OCP\Share::SHARE_TYPE_USER], function() use ($provider) {
+			return $provider;
+		});
+		$this->invokePrivate($manager, 'getProviderForType', [\OCP\SHARE::SHARE_TYPE_GROUP]);
+	}
 }
 
 class DummyPassword {