Add unit tests for encryption's isSystemWideMountPoint

Signed-off-by: Vincent Petry <vincent@nextcloud.com>

tests/lib/Encryption/UtilTest.php

@@ -4,6 +4,8 @@
 
 use OC\Encryption\Util;
 use OC\Files\View;
+use OCA\Files_External\Lib\StorageConfig;
+use OCA\Files_External\Service\GlobalStoragesService;
 use OCP\Encryption\IEncryptionModule;
 use OCP\IConfig;
 use Test\TestCase;
@@ -188,4 +190,43 @@ public function dataTestStripPartialFileExtension() {
 			['/foo/test.txt.ocTransferId7567.part', '/foo/test.txt'],
 		];
 	}
+
+	public function dataTestIsSystemWideMountPoint() {
+		return [
+			[false, 'non-matching mount point name', [], [], '/mp_another'],
+			[true, 'applicable to all', [], []],
+			[true, 'applicable to user directly', ['user1'], []],
+			[true, 'applicable to group directly', [], ['group1']],
+			[false, 'non-applicable to current user', ['user2'], []],
+			[false, 'non-applicable to current user\'s group', [], ['group2']],
+			[true, 'mount point without leading slash', [], [], 'mp'],
+		];
+	}
+
+	/**
+	 * @dataProvider dataTestIsSystemWideMountPoint
+	 */
+	public function testIsSystemWideMountPoint($expectedResult, $expectationText, $applicableUsers, $applicableGroups, $mountPointName = '/mp') {
+		$this->groupManager->method('isInGroup')
+			 ->will($this->returnValueMap([
+			 	['user1', 'group1', true], // user is only in group1
+			 	['user1', 'group2', false],
+			 ]));
+
+		$storages = [];
+
+		$storageConfig = $this->createMock(StorageConfig::class);
+		$storageConfig->method('getMountPoint')->willReturn($mountPointName);
+		$storageConfig->method('getApplicableUsers')->willReturn($applicableUsers);
+		$storageConfig->method('getApplicableGroups')->willReturn($applicableGroups);
+		$storages[] = $storageConfig;
+
+		$storagesServiceMock = $this->createMock(GlobalStoragesService::class);
+		$storagesServiceMock->expects($this->atLeastOnce())->method('getAllStorages')
+			->willReturn($storages);
+
+		$this->overwriteService(GlobalStoragesService::class, $storagesServiceMock);
+
+		$this->assertEquals($expectedResult, $this->util->isSystemWideMountPoint('/files/mp', 'user1'), 'Test case: ' . $expectationText);
+	}
 }