Calendar resource booking: unit tests / adding missing annotations

Signed-off-by: Georg Ehrke <developer@georgehrke.com>

9 files changed, 505 insertions, 4 deletions

diff --git a/apps/dav/lib/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJob.php b/apps/dav/lib/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJob.php
index 0c78f713605..a01540a6292 100644
--- a/apps/dav/lib/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJob.php
+++ b/apps/dav/lib/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJob.php
@@ -243,7 +243,7 @@ class UpdateCalendarResourcesRoomsBackgroundJob extends TimedJob {
 		$sorted = [
 			'new' => [],
 			'deleted' => [],
-			'existing' => [],
+			'edited' => [],
 		];
 
 		$backendIds = array_merge(array_keys($cached), array_keys($remote));
@@ -251,11 +251,11 @@ class UpdateCalendarResourcesRoomsBackgroundJob extends TimedJob {
 			if (!isset($cached[$backendId])) {
 				$sorted['new'][$backendId] = $remote[$backendId];
 			} elseif (!isset($remote[$backendId])) {
-				$sorted['deleted'][$backendId] = $remote[$backendId];
+				$sorted['deleted'][$backendId] = $cached[$backendId];
 			} else {
 				$sorted['new'][$backendId] = array_diff($remote[$backendId], $cached[$backendId]);
 				$sorted['deleted'][$backendId] = array_diff($cached[$backendId], $remote[$backendId]);
-				$sorted['existing'][$backendId] = array_intersect($remote[$backendId], $cached[$backendId]);
+				$sorted['edited'][$backendId] = array_intersect($remote[$backendId], $cached[$backendId]);
 			}
 		}
 
@@ -272,7 +272,7 @@ class UpdateCalendarResourcesRoomsBackgroundJob extends TimedJob {
 		$query = $this->db->getQueryBuilder();
 		$query->insert($table)
 			->values([
-				'backend_id' => $query->createNamedParameter($remote->getBackend()),
+				'backend_id' => $query->createNamedParameter($remote->getBackend()->getBackendIdentifier()),
 				'resource_id' => $query->createNamedParameter($remote->getId()),
 				'email' => $query->createNamedParameter($remote->getEMail()),
 				'displayname' => $query->createNamedParameter($remote->getDisplayName()),
@@ -320,6 +320,8 @@ class UpdateCalendarResourcesRoomsBackgroundJob extends TimedJob {
 				$this->serializeGroupRestrictions(
 					$remote->getGroupRestrictions()
 				)))
+			->where($query->expr()->eq('backend_id', $query->createNamedParameter($remote->getBackend()->getBackendIdentifier())))
+			->andWhere($query->expr()->eq('resource_id', $query->createNamedParameter($remote->getId())))
 			->execute();
 	}
 
diff --git a/apps/dav/tests/unit/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJobTest.php b/apps/dav/tests/unit/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJobTest.php
new file mode 100644
index 00000000000..56f768ceda0
--- /dev/null
+++ b/apps/dav/tests/unit/BackgroundJob/UpdateCalendarResourcesRoomsBackgroundJobTest.php
@@ -0,0 +1,285 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018, Georg Ehrke
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @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 OCA\DAV\Tests\unit\BackgroundJob;
+
+use OCA\DAV\BackgroundJob\UpdateCalendarResourcesRoomsBackgroundJob;
+
+use OCA\DAV\CalDAV\CalDavBackend;
+use OCP\Calendar\BackendTemporarilyUnavailableException;
+use OCP\Calendar\Resource\IBackend;
+use OCP\Calendar\Resource\IManager as IResourceManager;
+use OCP\Calendar\Resource\IResource;
+use OCP\Calendar\Room\IManager as IRoomManager;
+use Test\TestCase;
+
+class UpdateCalendarResourcesRoomsBackgroundJobTest extends TestCase {
+
+	/** @var UpdateCalendarResourcesRoomsBackgroundJob */
+	private $backgroundJob;
+
+	/** @var IResourceManager | \PHPUnit_Framework_MockObject_MockObject */
+	private $resourceManager;
+
+	/** @var IRoomManager | \PHPUnit_Framework_MockObject_MockObject */
+	private $roomManager;
+
+	/** @var CalDavBackend | \PHPUnit_Framework_MockObject_MockObject */
+	private $calDavBackend;
+
+	protected function setUp() {
+		parent::setUp();
+
+		$this->resourceManager = $this->createMock(IResourceManager::class);
+		$this->roomManager = $this->createMock(IRoomManager::class);
+		$this->calDavBackend = $this->createMock(CalDavBackend::class);
+
+		$this->backgroundJob = new UpdateCalendarResourcesRoomsBackgroundJob(
+			$this->resourceManager, $this->roomManager, self::$realDatabase,
+			$this->calDavBackend);
+	}
+
+	protected function tearDown() {
+		$query = self::$realDatabase->getQueryBuilder();
+		$query->delete('calendar_resources_cache')->execute();
+		$query->delete('calendar_rooms_cache')->execute();
+	}
+
+	/**
+	 * Data in Cache:
+	 * resources:
+	 *  [backend1, res1, Beamer1, {}]
+	 *  [backend1, res2, TV1, {}]
+	 *  [backend2, res3, Beamer2, {}]
+	 *  [backend2, res4, TV2, {}]
+	 *  [backend3, res5, Beamer3, {}]
+	 *  [backend3, res6, Pointer, {foo, bar}]
+	 *
+	 * Data in Backend:
+	 *  backend1 gone
+	 *  backend2 throws BackendTemporarilyUnavailableException
+	 *  [backend3, res6, Pointer123, {foo, biz}]
+	 *  [backend3, res7, Resource4, {biz}]
+	 *  [backend4, res8, Beamer, {}]
+	 *  [backend4, res9, Beamer2, {}]
+	 *
+	 * Expected after run:
+	 *  [backend2, res3, Beamer2, {}]
+	 *  [backend2, res4, TV2, {}]
+	 *  [backend3, res6, Pointer123, {foo, biz}]
+	 *  [backend3, res7, Resource4, {biz}]
+	 *  [backend4, res8, Beamer, {}]
+	 *  [backend4, res9, Beamer2, {}]
+	 */
+
+	public function testRun() {
+		$this->createTestResourcesInCache();
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend3 = $this->createMock(IBackend::class);
+		$backend4 = $this->createMock(IBackend::class);
+
+		$res6 = $this->createMock(IResource::class);
+		$res7 = $this->createMock(IResource::class);
+		$res8 = $this->createMock(IResource::class);
+		$res9 = $this->createMock(IResource::class);
+
+		$backend2->method('getBackendIdentifier')
+			->will($this->returnValue('backend2'));
+		$backend2->method('listAllResources')
+			->will($this->throwException(new BackendTemporarilyUnavailableException()));
+		$backend2->method('getResource')
+			->will($this->throwException(new BackendTemporarilyUnavailableException()));
+		$backend2->method('getAllResources')
+			->will($this->throwException(new BackendTemporarilyUnavailableException()));
+		$backend3->method('getBackendIdentifier')
+			->will($this->returnValue('backend3'));
+		$backend3->method('listAllResources')
+			->will($this->returnValue(['res6', 'res7']));
+		$backend3->method('getResource')
+			->will($this->returnValueMap([
+				['res6', $res6],
+				['res7', $res7],
+			]));
+		$backend4->method('getBackendIdentifier')
+			->will($this->returnValue('backend4'));
+		$backend4->method('listAllResources')
+			->will($this->returnValue(['res8', 'res9']));
+		$backend4->method('getResource')
+			->will($this->returnValueMap([
+				['res8', $res8],
+				['res9', $res9],
+			]));
+
+		$res6->method('getId')->will($this->returnValue('res6'));
+		$res6->method('getDisplayName')->will($this->returnValue('Pointer123'));
+		$res6->method('getGroupRestrictions')->will($this->returnValue(['foo', 'biz']));
+		$res6->method('getEMail')->will($this->returnValue('res6@foo.bar'));
+		$res6->method('getBackend')->will($this->returnValue($backend3));
+
+		$res7->method('getId')->will($this->returnValue('res7'));
+		$res7->method('getDisplayName')->will($this->returnValue('Resource4'));
+		$res7->method('getGroupRestrictions')->will($this->returnValue(['biz']));
+		$res7->method('getEMail')->will($this->returnValue('res7@foo.bar'));
+		$res7->method('getBackend')->will($this->returnValue($backend3));
+
+		$res8->method('getId')->will($this->returnValue('res8'));
+		$res8->method('getDisplayName')->will($this->returnValue('Beamer'));
+		$res8->method('getGroupRestrictions')->will($this->returnValue([]));
+		$res8->method('getEMail')->will($this->returnValue('res8@foo.bar'));
+		$res8->method('getBackend')->will($this->returnValue($backend4));
+
+		$res9->method('getId')->will($this->returnValue('res9'));
+		$res9->method('getDisplayName')->will($this->returnValue('Beamer2'));
+		$res9->method('getGroupRestrictions')->will($this->returnValue([]));
+		$res9->method('getEMail')->will($this->returnValue('res9@foo.bar'));
+		$res9->method('getBackend')->will($this->returnValue($backend4));
+
+		$this->resourceManager
+			->method('getBackends')
+			->will($this->returnValue([
+				$backend2, $backend3, $backend4
+			]));
+		$this->resourceManager
+			->method('getBackend')
+			->will($this->returnValueMap([
+				['backend2', $backend2],
+				['backend3', $backend3],
+				['backend4', $backend4],
+			]));
+
+		$this->backgroundJob->run([]);
+
+		$query = self::$realDatabase->getQueryBuilder();
+		$query->select('*')->from('calendar_resources_cache');
+
+		$rows = [];
+		$stmt = $query->execute();
+		while($row = $stmt->fetch(\PDO::FETCH_ASSOC)) {
+			unset($row['id']);
+			$rows[] = $row;
+		}
+
+		$this->assertEquals([
+			[
+				'backend_id' => 'backend2',
+				'resource_id' => 'res3',
+				'displayname' => 'Beamer2',
+				'email' => 'res3@foo.bar',
+				'group_restrictions' => '[]',
+			],
+			[
+				'backend_id' => 'backend2',
+				'resource_id' => 'res4',
+				'displayname' => 'TV2',
+				'email' => 'res4@foo.bar',
+				'group_restrictions' => '[]',
+			],
+			[
+				'backend_id' => 'backend3',
+				'resource_id' => 'res6',
+				'displayname' => 'Pointer123',
+				'email' => 'res6@foo.bar',
+				'group_restrictions' => '["foo","biz"]',
+			],
+			[
+				'backend_id' => 'backend3',
+				'resource_id' => 'res7',
+				'displayname' => 'Resource4',
+				'email' => 'res7@foo.bar',
+				'group_restrictions' => '["biz"]',
+			],
+			[
+				'backend_id' => 'backend4',
+				'resource_id' => 'res8',
+				'displayname' => 'Beamer',
+				'email' => 'res8@foo.bar',
+				'group_restrictions' => '[]',
+			],
+			[
+				'backend_id' => 'backend4',
+				'resource_id' => 'res9',
+				'displayname' => 'Beamer2',
+				'email' => 'res9@foo.bar',
+				'group_restrictions' => '[]',
+			],
+		], $rows);
+	}
+
+	protected function createTestResourcesInCache() {
+		$query = self::$realDatabase->getQueryBuilder();
+		$query->insert('calendar_resources_cache')
+			->values([
+				'backend_id' => $query->createNamedParameter('backend1'),
+				'resource_id' => $query->createNamedParameter('res1'),
+				'email' => $query->createNamedParameter('res1@foo.bar'),
+				'displayname' => $query->createNamedParameter('Beamer1'),
+				'group_restrictions' => $query->createNamedParameter('[]'),
+			])
+			->execute();
+		$query->insert('calendar_resources_cache')
+			->values([
+				'backend_id' => $query->createNamedParameter('backend1'),
+				'resource_id' => $query->createNamedParameter('res2'),
+				'email' => $query->createNamedParameter('res2@foo.bar'),
+				'displayname' => $query->createNamedParameter('TV1'),
+				'group_restrictions' => $query->createNamedParameter('[]'),
+			])
+			->execute();
+		$query->insert('calendar_resources_cache')
+			->values([
+				'backend_id' => $query->createNamedParameter('backend2'),
+				'resource_id' => $query->createNamedParameter('res3'),
+				'email' => $query->createNamedParameter('res3@foo.bar'),
+				'displayname' => $query->createNamedParameter('Beamer2'),
+				'group_restrictions' => $query->createNamedParameter('[]'),
+			])
+			->execute();
+		$query->insert('calendar_resources_cache')
+			->values([
+				'backend_id' => $query->createNamedParameter('backend2'),
+				'resource_id' => $query->createNamedParameter('res4'),
+				'email' => $query->createNamedParameter('res4@foo.bar'),
+				'displayname' => $query->createNamedParameter('TV2'),
+				'group_restrictions' => $query->createNamedParameter('[]'),
+			])
+			->execute();
+		$query->insert('calendar_resources_cache')
+			->values([
+				'backend_id' => $query->createNamedParameter('backend3'),
+				'resource_id' => $query->createNamedParameter('res5'),
+				'email' => $query->createNamedParameter('res5@foo.bar'),
+				'displayname' => $query->createNamedParameter('Beamer3'),
+				'group_restrictions' => $query->createNamedParameter('[]'),
+			])
+			->execute();
+		$query->insert('calendar_resources_cache')
+			->values([
+				'backend_id' => $query->createNamedParameter('backend3'),
+				'resource_id' => $query->createNamedParameter('res6'),
+				'email' => $query->createNamedParameter('res6@foo.bar'),
+				'displayname' => $query->createNamedParameter('Pointer'),
+				'group_restrictions' => $query->createNamedParameter('["foo", "bar"]'),
+			])
+			->execute();
+	}
+}
diff --git a/lib/public/Calendar/BackendTemporarilyUnavailableException.php b/lib/public/Calendar/BackendTemporarilyUnavailableException.php
index 61c1934c342..632a802359c 100644
--- a/lib/public/Calendar/BackendTemporarilyUnavailableException.php
+++ b/lib/public/Calendar/BackendTemporarilyUnavailableException.php
@@ -23,4 +23,10 @@
 
 namespace OCP\Calendar;
 
+/**
+ * Class BackendTemporarilyUnavailableException
+ *
+ * @package OCP\Calendar
+ * @since 14.0.0
+ */
 class BackendTemporarilyUnavailableException extends \Exception {}
diff --git a/lib/public/Calendar/Resource/IBackend.php b/lib/public/Calendar/Resource/IBackend.php
index 564c9e008b5..24635219fe0 100644
--- a/lib/public/Calendar/Resource/IBackend.php
+++ b/lib/public/Calendar/Resource/IBackend.php
@@ -37,6 +37,7 @@ interface IBackend {
 	 *
 	 * @throws BackendTemporarilyUnavailableException
 	 * @return IResource[]
+	 * @since 14.0.0
 	 */
 	public function getAllResources():array;
 
@@ -45,6 +46,7 @@ interface IBackend {
 	 *
 	 * @throws BackendTemporarilyUnavailableException
 	 * @return string[]
+	 * @since 14.0.0
 	 */
 	public function listAllResources():array;
 
@@ -54,6 +56,7 @@ interface IBackend {
 	 * @param string $id
 	 * @throws BackendTemporarilyUnavailableException
 	 * @return IResource|null
+	 * @since 14.0.0
 	 */
 	public function getResource($id);
 
diff --git a/lib/public/Calendar/Resource/IManager.php b/lib/public/Calendar/Resource/IManager.php
index d2ec7350dad..8542e13eba7 100644
--- a/lib/public/Calendar/Resource/IManager.php
+++ b/lib/public/Calendar/Resource/IManager.php
@@ -23,6 +23,12 @@
 
 namespace OCP\Calendar\Resource;
 
+/**
+ * Interface IManager
+ *
+ * @package OCP\Calendar\Resource
+ * @since 14.0.0
+ */
 interface IManager {
 
 	/**
@@ -52,6 +58,7 @@ interface IManager {
 	/**
 	 * @param string $backendId
 	 * @return IBackend
+	 * @since 14.0.0
 	 */
 	public function getBackend($backendId):IBackend;
 
diff --git a/lib/public/Calendar/Room/IBackend.php b/lib/public/Calendar/Room/IBackend.php
index 0d4c3ef678f..f675012ab39 100644
--- a/lib/public/Calendar/Room/IBackend.php
+++ b/lib/public/Calendar/Room/IBackend.php
@@ -37,6 +37,7 @@ interface IBackend {
 	 *
 	 * @throws BackendTemporarilyUnavailableException
 	 * @return IRoom[]
+	 * @since 14.0.0
 	 */
 	public function getAllRooms():array;
 
@@ -45,6 +46,7 @@ interface IBackend {
 	 *
 	 * @throws BackendTemporarilyUnavailableException
 	 * @return string[]
+	 * @since 14.0.0
 	 */
 	public function listAllRooms():array;
 
@@ -54,6 +56,7 @@ interface IBackend {
 	 * @param string $id
 	 * @throws BackendTemporarilyUnavailableException
 	 * @return IRoom|null
+	 * @since 14.0.0
 	 */
 	public function getRoom($id);
 
diff --git a/lib/public/Calendar/Room/IManager.php b/lib/public/Calendar/Room/IManager.php
index 6f55f0f76c0..39e85c43e45 100644
--- a/lib/public/Calendar/Room/IManager.php
+++ b/lib/public/Calendar/Room/IManager.php
@@ -23,6 +23,12 @@
 
 namespace OCP\Calendar\Room;
 
+/**
+ * Interface IManager
+ *
+ * @package OCP\Calendar\Room
+ * @since 14.0.0
+ */
 interface IManager {
 
 	/**
@@ -52,6 +58,7 @@ interface IManager {
 	/**
 	 * @param string $backendId
 	 * @return IBackend
+	 * @since 14.0.0
 	 */
 	public function getBackend($backendId):IBackend;
 
diff --git a/tests/lib/Calendar/Resource/ManagerTest.php b/tests/lib/Calendar/Resource/ManagerTest.php
new file mode 100644
index 00000000000..ccc6bbf182b
--- /dev/null
+++ b/tests/lib/Calendar/Resource/ManagerTest.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * @copyright 2018, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Test\Calendar\Resource;
+
+use \OC\Calendar\Resource\Manager;
+use \OCP\Calendar\Resource\IBackend;
+use \Test\TestCase;
+
+class ManagerTest extends TestCase {
+
+	/** @var Manager */
+	private $manager;
+
+	protected function setUp() {
+		parent::setUp();
+
+		$this->manager = new Manager();
+	}
+
+	public function testRegisterUnregisterBackend() {
+		$backend1 = $this->createMock(IBackend::class);
+		$backend1->method('getBackendIdentifier')->will($this->returnValue('backend_1'));
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend2->method('getBackendIdentifier')->will($this->returnValue('backend_2'));
+
+		$this->manager->registerBackend($backend1);
+		$this->manager->registerBackend($backend2);
+
+		$this->assertEquals([
+			$backend1, $backend2
+		], $this->manager->getBackends());
+
+		$this->manager->unregisterBackend($backend1);
+
+		$this->assertEquals([
+			$backend2
+		], $this->manager->getBackends());
+	}
+
+	public function testGetBackend() {
+		$backend1 = $this->createMock(IBackend::class);
+		$backend1->method('getBackendIdentifier')->will($this->returnValue('backend_1'));
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend2->method('getBackendIdentifier')->will($this->returnValue('backend_2'));
+
+		$this->manager->registerBackend($backend1);
+		$this->manager->registerBackend($backend2);
+
+		$this->assertEquals($backend1, $this->manager->getBackend('backend_1'));
+		$this->assertEquals($backend2, $this->manager->getBackend('backend_2'));
+	}
+
+	public function testClear() {
+		$backend1 = $this->createMock(IBackend::class);
+		$backend1->method('getBackendIdentifier')->will($this->returnValue('backend_1'));
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend2->method('getBackendIdentifier')->will($this->returnValue('backend_2'));
+
+		$this->manager->registerBackend($backend1);
+		$this->manager->registerBackend($backend2);
+
+		$this->assertEquals([
+			$backend1, $backend2
+		], $this->manager->getBackends());
+
+		$this->manager->clear();
+
+		$this->assertEquals([], $this->manager->getBackends());
+	}
+}
diff --git a/tests/lib/Calendar/Room/ManagerTest.php b/tests/lib/Calendar/Room/ManagerTest.php
new file mode 100644
index 00000000000..34d69d127e2
--- /dev/null
+++ b/tests/lib/Calendar/Room/ManagerTest.php
@@ -0,0 +1,94 @@
+<?php
+/**
+ * @copyright 2018, Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @author Georg Ehrke <oc.list@georgehrke.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Test\Calendar\Room;
+
+use \OC\Calendar\Room\Manager;
+use \OCP\Calendar\Room\IBackend;
+use \Test\TestCase;
+
+class ManagerTest extends TestCase {
+
+	/** @var Manager */
+	private $manager;
+
+	protected function setUp() {
+		parent::setUp();
+
+		$this->manager = new Manager();
+	}
+
+	public function testRegisterUnregisterBackend() {
+		$backend1 = $this->createMock(IBackend::class);
+		$backend1->method('getBackendIdentifier')->will($this->returnValue('backend_1'));
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend2->method('getBackendIdentifier')->will($this->returnValue('backend_2'));
+
+		$this->manager->registerBackend($backend1);
+		$this->manager->registerBackend($backend2);
+
+		$this->assertEquals([
+			$backend1, $backend2
+		], $this->manager->getBackends());
+
+		$this->manager->unregisterBackend($backend1);
+
+		$this->assertEquals([
+			$backend2
+		], $this->manager->getBackends());
+	}
+
+	public function testGetBackend() {
+		$backend1 = $this->createMock(IBackend::class);
+		$backend1->method('getBackendIdentifier')->will($this->returnValue('backend_1'));
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend2->method('getBackendIdentifier')->will($this->returnValue('backend_2'));
+
+		$this->manager->registerBackend($backend1);
+		$this->manager->registerBackend($backend2);
+
+		$this->assertEquals($backend1, $this->manager->getBackend('backend_1'));
+		$this->assertEquals($backend2, $this->manager->getBackend('backend_2'));
+	}
+
+	public function testClear() {
+		$backend1 = $this->createMock(IBackend::class);
+		$backend1->method('getBackendIdentifier')->will($this->returnValue('backend_1'));
+
+		$backend2 = $this->createMock(IBackend::class);
+		$backend2->method('getBackendIdentifier')->will($this->returnValue('backend_2'));
+
+		$this->manager->registerBackend($backend1);
+		$this->manager->registerBackend($backend2);
+
+		$this->assertEquals([
+			$backend1, $backend2
+		], $this->manager->getBackends());
+
+		$this->manager->clear();
+
+		$this->assertEquals([], $this->manager->getBackends());
+	}
+}