Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

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// the Free Software Foundation, either version 3 of the License, or

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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * This file contains tests for the repository_nextcloud class.

 *

 * @package     repository_nextcloud

 * @copyright  2017 Project seminar (Learnweb, University of Münster)

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace repository_nextcloud;

use repository;

use repository_nextcloud;

defined('MOODLE_INTERNAL') || die();

global $CFG;

require_once($CFG->dirroot . '/repository/lib.php');

require_once($CFG->libdir . '/webdavlib.php');

/**

 * Class repository_nextcloud_lib_testcase

 * @group repository_nextcloud

 * @copyright  2017 Project seminar (Learnweb, University of Münster)

 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class lib_test extends \advanced_testcase {

    /** @var null|\repository_nextcloud the repository_nextcloud object, which the tests are run on. */

    private $repo = null;

    /** @var null|\core\oauth2\issuer which belongs to the repository_nextcloud object.*/

    private $issuer = null;

    /**

     * SetUp to create an repository instance.

     */

    protected function setUp(): void {

        $this->resetAfterTest(true);

        // Admin is neccessary to create api and issuer objects.

        $this->setAdminUser();

        /** @var repository_nextcloud_generator $generator */

        $generator = $this->getDataGenerator()->get_plugin_generator('repository_nextcloud');

        $this->issuer = $generator->test_create_issuer();

        // Create Endpoints for issuer.

        $generator->test_create_endpoints($this->issuer->get('id'));

        // Params for the config form.

        $reptype = $generator->create_type([

            'visible' => 1,

            'enableuserinstances' => 0,

            'enablecourseinstances' => 0,

        ]);

        $instance = $generator->create_instance([

            'issuerid' => $this->issuer->get('id'),

            'pluginname' => 'Nextcloud',

            'controlledlinkfoldername' => 'Moodlefiles',

            'supportedreturntypes' => 'both',

            'defaultreturntype' => FILE_INTERNAL,

        ]);

        // At last, create a repository_nextcloud object from the instance id.

        $this->repo = new repository_nextcloud($instance->id);

        $this->repo->options['typeid'] = $reptype->id;

        $this->repo->options['sortorder'] = 1;

        $this->resetAfterTest(true);

    }

    /**

     * Checks the is_visible method in case the repository is set to hidden in the database.

     */

    public function test_is_visible_parent_false() {

        global $DB;

        $id = $this->repo->options['typeid'];

        // Check, if the method returns false, when the repository is set to visible in the database

        // and the client configuration data is complete.

        $DB->update_record('repository', (object) array('id' => $id, 'visible' => 0));

        $this->assertFalse($this->repo->is_visible());

    }

    /**

     * Test whether the repo is disabled.

     */

    public function test_repo_creation() {

        $issuerid = $this->repo->get_option('issuerid');

        // Config saves the right id.

        $this->assertEquals($this->issuer->get('id'), $issuerid);

        // Function that is used in construct method returns the right id.

        $constructissuer = \core\oauth2\api::get_issuer($issuerid);

        $this->assertEquals($this->issuer->get('id'), $constructissuer->get('id'));

        $this->assertEquals(true, $constructissuer->get('enabled'));

        $this->assertFalse($this->repo->disabled);

    }

    /**

     * Returns an array of endpoints or null.

     * @param string $endpointname

     * @return array|null

     */

    private function get_endpoint_id($endpointname) {

        $endpoints = \core\oauth2\api::get_endpoints($this->issuer);

        $id = array();

        foreach ($endpoints as $endpoint) {

            $name = $endpoint->get('name');

            if ($name === $endpointname) {

                $id[$endpoint->get('id')] = $endpoint->get('id');

            }

        }

        if (empty($id)) {

            return null;

        }

        return $id;

    }

    /**

     * Test if repository is disabled when webdav_endpoint is deleted.

     */

    public function test_issuer_webdav() {

        $idwebdav = $this->get_endpoint_id('webdav_endpoint');

        if (!empty($idwebdav)) {

            foreach ($idwebdav as $id) {

                \core\oauth2\api::delete_endpoint($id);

            }

        }

        $this->assertFalse(\repository_nextcloud\issuer_management::is_valid_issuer($this->issuer));

    }

    /**

     * Test if repository is disabled when ocs_endpoint is deleted.

     */

    public function test_issuer_ocs() {

        $idocs = $this->get_endpoint_id('ocs_endpoint');

        if (!empty($idocs)) {

            foreach ($idocs as $id) {

                \core\oauth2\api::delete_endpoint($id);

            }

        }

        $this->assertFalse(\repository_nextcloud\issuer_management::is_valid_issuer($this->issuer));

    }

    /**

     * Test if repository is disabled when userinfo_endpoint is deleted.

     */

    public function test_issuer_userinfo() {

        $idtoken = $this->get_endpoint_id('userinfo_endpoint');

        if (!empty($idtoken)) {

            foreach ($idtoken as $id) {

                \core\oauth2\api::delete_endpoint($id);

            }

        }

        $this->assertFalse(\repository_nextcloud\issuer_management::is_valid_issuer($this->issuer));

    }

    /**

     * Test if repository is disabled when token_endpoint is deleted.

     */

    public function test_issuer_token() {

        $idtoken = $this->get_endpoint_id('token_endpoint');

        if (!empty($idtoken)) {

            foreach ($idtoken as $id) {

                \core\oauth2\api::delete_endpoint($id);

            }

        }

        $this->assertFalse(\repository_nextcloud\issuer_management::is_valid_issuer($this->issuer));

    }

    /**

     * Test if repository is disabled when auth_endpoint is deleted.

     */

    public function test_issuer_authorization() {

        $idauth = $this->get_endpoint_id('authorization_endpoint');

        if (!empty($idauth)) {

            foreach ($idauth as $id) {

                \core\oauth2\api::delete_endpoint($id);

            }

        }

        $this->assertFalse(\repository_nextcloud\issuer_management::is_valid_issuer($this->issuer));

    }

    /**

     * Test if repository throws an error when endpoint does not exist.

     */

    public function test_parse_endpoint_url_error() {

        $this->expectException(\repository_nextcloud\configuration_exception::class);

        \repository_nextcloud\issuer_management::parse_endpoint_url('notexisting', $this->issuer);

    }

    /**

     * Test get_listing method with an example directory. Tests error cases.

     */

    public function test_get_listing_error() {

        $ret = $this->get_initialised_return_array();

        $this->setUser();

        // WebDAV socket is not opened.

        $mock = $this->createMock(\webdav_client::class);

        $mock->expects($this->once())->method('open')->will($this->returnValue(false));

        $private = $this->set_private_property($mock, 'dav');

        $this->assertEquals($ret, $this->repo->get_listing('/'));

        // Response is not an array.

        $mock = $this->createMock(\webdav_client::class);

        $mock->expects($this->once())->method('open')->will($this->returnValue(true));

        $mock->expects($this->once())->method('ls')->will($this->returnValue('notanarray'));

        $private->setValue($this->repo, $mock);

        $this->assertEquals($ret, $this->repo->get_listing('/'));

    }

    /**

     * Test get_listing method with an example directory. Tests the root directory.

     */

    public function test_get_listing_root() {

        $this->setUser();

        $ret = $this->get_initialised_return_array();

        // This is the expected response from the ls method.

        $response = array(

            array(

                'href' => 'remote.php/webdav/',

                'lastmodified' => 'Thu, 08 Dec 2016 16:06:26 GMT',

                'resourcetype' => 'collection',

                'status' => 'HTTP/1.1 200 OK',

                'getcontentlength' => ''

            ),

            array(

                'href' => 'remote.php/webdav/Documents/',

                'lastmodified' => 'Thu, 08 Dec 2016 16:06:26 GMT',

                'resourcetype' => 'collection',

                'status' => 'HTTP/1.1 200 OK',

                'getcontentlength' => ''

            ),

            array(

                'href' => 'remote.php/webdav/welcome.txt',

                'lastmodified' => 'Thu, 08 Dec 2016 16:06:26 GMT',

                'status' => 'HTTP/1.1 200 OK',

                'getcontentlength' => '163'

            )

        );

        // The expected result from the get_listing method in the repository_nextcloud class.

        $ret['list'] = array(

            'DOCUMENTS/' => array(

                'title' => 'Documents',

                'thumbnail' => null,

                'children' => array(),

                'datemodified' => 1481213186,

                'path' => '/Documents/'

            ),

            'WELCOME.TXT' => array(

                'title' => 'welcome.txt',

                'thumbnail' => null,

                'size' => '163',

                'datemodified' => 1481213186,

                'source' => '/welcome.txt'

            )

        );

        // Valid response from the client.

        $mock = $this->createMock(\webdav_client::class);

        $mock->expects($this->once())->method('open')->will($this->returnValue(true));

        $mock->expects($this->once())->method('ls')->will($this->returnValue($response));

        $this->set_private_property($mock, 'dav');

        $ls = $this->repo->get_listing('/');

        // Those attributes can not be tested properly.

        $ls['list']['DOCUMENTS/']['thumbnail'] = null;

        $ls['list']['WELCOME.TXT']['thumbnail'] = null;

        $this->assertEquals($ret, $ls);

    }

    /**

     * Test get_listing method with an example directory. Tests a different directory than the root

     * directory.

     */

    public function test_get_listing_directory() {

        $ret = $this->get_initialised_return_array();

        $this->setUser();

        // An additional directory path has to be added to the 'path' field within the returned array.

        $ret['path'][1] = array(

            'name' => 'dir',

            'path' => '/dir/'

        );

        // This is the expected response from the get_listing method in the Nextcloud client.

        $response = array(

            array(

                'href' => 'remote.php/webdav/dir/',

                'lastmodified' => 'Thu, 08 Dec 2016 16:06:26 GMT',

                'resourcetype' => 'collection',

                'status' => 'HTTP/1.1 200 OK',

                'getcontentlength' => ''

            ),

            array(

                'href' => 'remote.php/webdav/dir/Documents/',

                'lastmodified' => null,

                'resourcetype' => 'collection',

                'status' => 'HTTP/1.1 200 OK',

                'getcontentlength' => ''

            ),

            array(

                'href' => 'remote.php/webdav/dir/welcome.txt',

                'lastmodified' => 'Thu, 08 Dec 2016 16:06:26 GMT',

                'status' => 'HTTP/1.1 200 OK',

                'getcontentlength' => '163'

            )

        );

        // The expected result from the get_listing method in the repository_nextcloud class.

        $ret['list'] = array(

            'DOCUMENTS/' => array(

                'title' => 'Documents',

                'thumbnail' => null,

                'children' => array(),

                'datemodified' => null,

                'path' => '/dir/Documents/'

            ),

            'WELCOME.TXT' => array(

                'title' => 'welcome.txt',

                'thumbnail' => null,

                'size' => '163',

                'datemodified' => 1481213186,

                'source' => '/dir/welcome.txt'

            )

        );

        // Valid response from the client.

        $mock = $this->createMock(\webdav_client::class);

        $mock->expects($this->once())->method('open')->will($this->returnValue(true));

        $mock->expects($this->once())->method('ls')->will($this->returnValue($response));

        $this->set_private_property($mock, 'dav');

        $ls = $this->repo->get_listing('/dir/');

        // Can not be tested properly.

        $ls['list']['DOCUMENTS/']['thumbnail'] = null;

        $ls['list']['WELCOME.TXT']['thumbnail'] = null;

        $this->assertEquals($ret, $ls);

    }

    /**

     * Test the get_link method.

     */

    public function test_get_link_success() {

        $mock = $this->getMockBuilder(\repository_nextcloud\ocs_client::class)->disableOriginalConstructor()->disableOriginalClone(

            )->getMock();

        $file = '/datei';

        $expectedresponse = <<<XML

<?xml version="1.0"?>

<ocs>

 <meta>

  <status>ok</status>

  <statuscode>100</statuscode>

  <message/>

 </meta>

 <data>

  <id>2</id>

  <share_type>3</share_type>

  <uid_owner>admin</uid_owner>

  <displayname_owner>admin</displayname_owner>

  <permissions>1</permissions>

  <stime>1502883721</stime>

  <parent/>

  <expiration/>

  <token>QXbqrJj8DcMaXen</token>

  <uid_file_owner>admin</uid_file_owner>

  <displayname_file_owner>admin</displayname_file_owner>

  <path>/somefile</path>

  <item_type>file</item_type>

  <mimetype>application/pdf</mimetype>

  <storage_id>home::admin</storage_id>

  <storage>1</storage>

  <item_source>6</item_source>

  <file_source>6</file_source>

  <file_parent>4</file_parent>

  <file_target>/somefile</file_target>

  <share_with/>

  <share_with_displayname/>

  <name/>

  <url>https://www.default.test/somefile</url>

  <mail_send>0</mail_send>

 </data>

</ocs>

XML;

        // Expected Parameters.

        $ocsquery = [

            'path' => $file,

            'shareType' => \repository_nextcloud\ocs_client::SHARE_TYPE_PUBLIC,

            'publicUpload' => false,

            'permissions' => \repository_nextcloud\ocs_client::SHARE_PERMISSION_READ

        ];

        // With test whether mock is called with right parameters.

        $mock->expects($this->once())->method('call')->with('create_share', $ocsquery)->will($this->returnValue($expectedresponse));

        $this->set_private_property($mock, 'ocsclient');

        // Method does extract the link from the xml format.

        $this->assertEquals('https://www.default.test/somefile/download', $this->repo->get_link($file));

    }

    /**

     * get_link can get OCS failure responses. Test that this is handled appropriately.

     */

    public function test_get_link_failure() {

        $mock = $this->getMockBuilder(\repository_nextcloud\ocs_client::class)->disableOriginalConstructor()->disableOriginalClone(

            )->getMock();

        $file = '/datei';

        $expectedresponse = <<<XML

<?xml version="1.0"?>

<ocs>

 <meta>

  <status>failure</status>

  <statuscode>404</statuscode>

  <message>Msg</message>

 </meta>

 <data/>

</ocs>

XML;

        // Expected Parameters.

        $ocsquery = [

            'path' => $file,

            'shareType' => \repository_nextcloud\ocs_client::SHARE_TYPE_PUBLIC,

            'publicUpload' => false,

            'permissions' => \repository_nextcloud\ocs_client::SHARE_PERMISSION_READ

        ];

        // With test whether mock is called with right parameters.

        $mock->expects($this->once())->method('call')->with('create_share', $ocsquery)->will($this->returnValue($expectedresponse));

        $this->set_private_property($mock, 'ocsclient');

        // Suppress (expected) XML parse error... Nextcloud sometimes returns JSON on extremely bad errors.

        libxml_use_internal_errors(true);

        // Method get_link correctly raises an exception that contains error code and message.

        $this->expectException(\repository_nextcloud\request_exception::class);

        $params = array('instance' => $this->repo->get_name(), 'errormessage' => sprintf('(%s) %s', '404', 'Msg'));

        $this->expectExceptionMessage(get_string('request_exception', 'repository_nextcloud', $params));

        $this->repo->get_link($file);

    }

    /**

     * get_link can get OCS responses that are not actually XML. Test that this is handled appropriately.

     */

    public function test_get_link_problem() {

        $mock = $this->getMockBuilder(\repository_nextcloud\ocs_client::class)->disableOriginalConstructor()->disableOriginalClone(

            )->getMock();

        $file = '/datei';

        $expectedresponse = <<<JSON

{"message":"CSRF check failed"}

JSON;

        // Expected Parameters.

        $ocsquery = [

            'path' => $file,

            'shareType' => \repository_nextcloud\ocs_client::SHARE_TYPE_PUBLIC,

            'publicUpload' => false,

            'permissions' => \repository_nextcloud\ocs_client::SHARE_PERMISSION_READ

        ];

        // With test whether mock is called with right parameters.

        $mock->expects($this->once())->method('call')->with('create_share', $ocsquery)->will($this->returnValue($expectedresponse));

        $this->set_private_property($mock, 'ocsclient');

        // Suppress (expected) XML parse error... Nextcloud sometimes returns JSON on extremely bad errors.

        libxml_use_internal_errors(true);

        // Method get_link correctly raises an exception.

        $this->expectException(\repository_nextcloud\request_exception::class);

        $this->repo->get_link($file);

    }

    /**

     * Test get_file reference, merely returns the input if no optional_param is set.

     */

    public function test_get_file_reference_withoutoptionalparam() {

        $this->assertEquals('/somefile', $this->repo->get_file_reference('/somefile'));

    }

    /**

     * Test logout.

     */

    public function test_logout() {

        $mock = $this->createMock(\core\oauth2\client::class);

        $mock->expects($this->exactly(2))->method('log_out');

        $this->set_private_property($mock, 'client');

        $this->repo->options['ajax'] = false;

        $this->expectOutputString('<a target="_blank" rel="noopener noreferrer">Log in to your account</a>' .

            '<a target="_blank" rel="noopener noreferrer">Log in to your account</a>');

        $this->assertEquals($this->repo->print_login(), $this->repo->logout());

        $mock->expects($this->exactly(2))->method('get_login_url')->will($this->returnValue(new \moodle_url('url')));

        $this->repo->options['ajax'] = true;

        $this->assertEquals($this->repo->print_login(), $this->repo->logout());

    }

    /**

     * Test for the get_file method from the repository_nextcloud class.

     */

    public function test_get_file() {

        // WebDAV socket is not open.

        $mock = $this->createMock(\webdav_client::class);

        $mock->expects($this->once())->method('open')->will($this->returnValue(false));

        $private = $this->set_private_property($mock, 'dav');

        $this->assertFalse($this->repo->get_file('path'));

        // WebDAV socket is open and the request successful.

        $mock = $this->createMock(\webdav_client::class);

        $mock->expects($this->once())->method('open')->will($this->returnValue(true));

        $mock->expects($this->once())->method('get_file')->will($this->returnValue(true));

        $private->setValue($this->repo, $mock);

        $result = $this->repo->get_file('path', 'file');

        $this->assertNotNull($result['path']);

    }

    /**

     * Test callback.

     */

    public function test_callback() {

        $mock = $this->createMock(\core\oauth2\client::class);

        // Should call check_login exactly once.

        $mock->expects($this->once())->method('log_out');

        $mock->expects($this->once())->method('is_logged_in');

        $this->set_private_property($mock, 'client');

        $this->repo->callback();

    }

    /**

     * Test check_login.

     */

    public function test_check_login() {

        $mock = $this->createMock(\core\oauth2\client::class);

        $mock->expects($this->once())->method('is_logged_in')->will($this->returnValue(true));

        $this->set_private_property($mock, 'client');

        $this->assertTrue($this->repo->check_login());

    }

    /**

     * Test print_login.

     */

    public function test_print_login() {

        $mock = $this->createMock(\core\oauth2\client::class);

        $mock->expects($this->exactly(2))->method('get_login_url')->will($this->returnValue(new \moodle_url('url')));

        $this->set_private_property($mock, 'client');

        // Test with ajax activated.

        $this->repo->options['ajax'] = true;

        $url = new \moodle_url('url');

        $ret = array();

        $btn = new \stdClass();

        $btn->type = 'popup';

        $btn->url = $url->out(false);

        $ret['login'] = array($btn);

        $this->assertEquals($ret, $this->repo->print_login());

        // Test without ajax.

        $this->repo->options['ajax'] = false;

        $output = \html_writer::link($url, get_string('login', 'repository'),

            array('target' => '_blank',  'rel' => 'noopener noreferrer'));

        $this->expectOutputString($output);

        $this->repo->print_login();

    }

    /**

     * Test the initiate_webdavclient function.

     */

    public function test_initiate_webdavclient() {

        global $CFG;

        $idwebdav = $this->get_endpoint_id('webdav_endpoint');

        if (!empty($idwebdav)) {

            foreach ($idwebdav as $id) {

                \core\oauth2\api::delete_endpoint($id);

            }

        }

        $generator = $this->getDataGenerator()->get_plugin_generator('repository_nextcloud');

        $generator->test_create_single_endpoint($this->issuer->get('id'), "webdav_endpoint",

            "https://www.default.test:8080/webdav/index.php");

        $fakeaccesstoken = new \stdClass();

        $fakeaccesstoken->token = "fake access token";

        $oauthmock = $this->createMock(\core\oauth2\client::class);

        $oauthmock->expects($this->once())->method('get_accesstoken')->will($this->returnValue($fakeaccesstoken));

        $this->set_private_property($oauthmock, 'client');

        $dav = \phpunit_util::call_internal_method($this->repo, "initiate_webdavclient", [], 'repository_nextcloud');

        // Verify that port is set correctly (private property).

        $refclient = new \ReflectionClass($dav);

        $property = $refclient->getProperty('_port');

        $port = $property->getValue($dav);

        $this->assertEquals('8080', $port);

    }

    /**

     * Test supported_returntypes.

     * FILE_INTERNAL | FILE_REFERENCE when no system account is connected.

     * FILE_INTERNAL | FILE_CONTROLLED_LINK | FILE_REFERENCE when a system account is connected.

     */

    public function test_supported_returntypes() {

        global $DB;

        $this->assertEquals(FILE_INTERNAL | FILE_REFERENCE, $this->repo->supported_returntypes());

        $dataobject = new \stdClass();

        $dataobject->timecreated = time();

        $dataobject->timemodified = time();

        $dataobject->usermodified = 2;

        $dataobject->issuerid = $this->issuer->get('id');

        $dataobject->refreshtoken = 'sometokenthatwillnotbeused';

        $dataobject->grantedscopes = 'openid profile email';

        $dataobject->email = 'some.email@some.de';

        $dataobject->username = 'someusername';

        $DB->insert_record('oauth2_system_account', $dataobject);

        // When a system account is registered the file_type FILE_CONTROLLED_LINK is supported.

        $this->assertEquals(FILE_INTERNAL | FILE_CONTROLLED_LINK | FILE_REFERENCE,

            $this->repo->supported_returntypes());

    }

    /**

     * The reference_file_selected() method is called every time a FILE_CONTROLLED_LINK is chosen for upload.

     * Since the function is very long the private function are tested separately, and merely the abortion of the

     * function are tested.

     *

     */

    public function test_reference_file_selected_error() {

        $this->repo->disabled = true;

        $this->expectException(\repository_exception::class);

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $this->repo->disabled = false;

        $this->expectException(\repository_exception::class);

        $this->expectExceptionMessage('Cannot connect as system user');

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $mock = $this->createMock(\core\oauth2\client::class);

        $mock->expects($this->once())->method('get_system_oauth_client')->with($this->issuer)->willReturn(true);

        $this->expectException(\repository_exception::class);

        $this->expectExceptionMessage('Cannot connect as current user');

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $this->repo->expects($this->once())->method('get_user_oauth_client')->willReturn(true);

        $this->expectException(\repository_exception::class);

        $this->expectExceptionMessage('cannotdownload');

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $this->repo->expects($this->once())->method('get_user_oauth_client')->willReturn(true);

        $this->expectException(\repository_exception::class);

        $this->expectExceptionMessage('cannotdownload');

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $this->repo->expects($this->once())->method('get_user_oauth_client')->willReturn(true);

        $this->repo->expects($this->once())->method('copy_file_to_path')->willReturn(array('statuscode' =>

            array('success' => 400)));

        $this->expectException(\repository_exception::class);

        $this->expectExceptionMessage('Could not copy file');

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $this->repo->expects($this->once())->method('get_user_oauth_client')->willReturn(true);

        $this->repo->expects($this->once())->method('copy_file_to_path')->willReturn(array('statuscode' =>

            array('success' => 201)));

        $this->repo->expects($this->once())->method('delete_share_dataowner_sysaccount')->willReturn(

            array('statuscode' => array('success' => 400)));

        $this->expectException(\repository_exception::class);

        $this->expectExceptionMessage('Share is still present');

        $this->repo->reference_file_selected('', \context_system::instance(), '', '', '');

        $this->repo->expects($this->once())->method('get_user_oauth_client')->willReturn(true);

        $this->repo->expects($this->once())->method('copy_file_to_path')->willReturn(array('statuscode' =>

            array('success' => 201)));

        $this->repo->expects($this->once())->method('delete_share_dataowner_sysaccount')->willReturn(

            array('statuscode' => array('success' => 100)));

        $filereturn = new \stdClass();

        $filereturn->link = 'some/fullpath' . 'some/target/path';

        $filereturn->name = 'mysource';

        $filereturn->usesystem = true;

        $filereturn = json_encode($filereturn);

        $return = $this->repo->reference_file_selected('mysource', \context_system::instance(), '', '', '');

        $this->assertEquals($filereturn, $return);

    }

    /**

     * Test the send_file function for access controlled links.

     */

    public function test_send_file_errors() {

        $fs = get_file_storage();

        $storedfile = $fs->create_file_from_reference([

            'contextid' => \context_system::instance()->id,

            'component' => 'core',

            'filearea'  => 'unittest',

            'itemid'    => 0,

            'filepath'  => '/',

            'filename'  => 'testfile.txt',

        ], $this->repo->id, json_encode([

            'type' => 'FILE_CONTROLLED_LINK',

            'link' => 'https://test.local/fakelink/',

            'usesystem' => true,

        ]));

        $this->set_private_property('', 'client');

        $this->expectException(repository_nextcloud\request_exception::class);

        $this->expectExceptionMessage(get_string('contactadminwith', 'repository_nextcloud',

            'The OAuth clients could not be connected.'));

        $this->repo->send_file($storedfile, '', '', '');

        // Testing whether the mock up appears is topic to behat.

        $mock = $this->createMock(\core\oauth2\client::class);

        $mock->expects($this->once())->method('is_logged_in')->willReturn(true);

        $this->repo->send_file($storedfile, '', '', '');

        // Checks that setting for foldername are used.

        $mock->expects($this->once())->method('is_dir')->with('Moodlefiles')->willReturn(false);

        // In case of false as return value mkcol is called to create the folder.

        $parsedwebdavurl = parse_url($this->issuer->get_endpoint_url('webdav'));

        $webdavprefix = $parsedwebdavurl['path'];

        $mock->expects($this->once())->method('mkcol')->with(

            $webdavprefix . 'Moodlefiles')->willReturn(400);

        $this->expectException(\repository_nextcloud\request_exception::class);

        $this->expectExceptionMessage(get_string('requestnotexecuted', 'repository_nextcloud'));

        $this->repo->send_file($storedfile, '', '', '');

        $expectedresponse = <<<XML

<?xml version="1.0"?>

<ocs>

 <meta>

  <status>ok</status>

  <statuscode>100</statuscode>

  <message/>

 </meta>

 <data>

  <element>

   <id>6</id>

   <share_type>0</share_type>

   <uid_owner>tech</uid_owner>

   <displayname_owner>tech</displayname_owner>

   <permissions>19</permissions>

   <stime>1511877999</stime>

   <parent/>

   <expiration/>

   <token/>

   <uid_file_owner>tech</uid_file_owner>

   <displayname_file_owner>tech</displayname_file_owner>

   <path>/System/Category Category 1/Course Example Course/File morefiles/mod_resource/content/0/merge.txt</path>

   <item_type>file</item_type>

   <mimetype>text/plain</mimetype>

   <storage_id>home::tech</storage_id>

   <storage>4</storage>

   <item_source>824</item_source>

   <file_source>824</file_source>

   <file_parent>823</file_parent>

   <file_target>/merge (3).txt</file_target>

   <share_with>user2</share_with>

   <share_with_displayname>user1</share_with_displayname>

   <mail_send>0</mail_send>

  </element>

  <element>

   <id>5</id>

   <share_type>0</share_type>

   <uid_owner>tech</uid_owner>

   <displayname_owner>tech</displayname_owner>

   <permissions>19</permissions>

   <stime>1511877999</stime>

   <parent/>

   <expiration/>

   <token/>

   <uid_file_owner>tech</uid_file_owner>

   <displayname_file_owner>tech</displayname_file_owner>

   <path>/System/Category Category 1/Course Example Course/File morefiles/mod_resource/content/0/merge.txt</path>

   <item_type>file</item_type>

   <mimetype>text/plain</mimetype>

   <storage_id>home::tech</storage_id>

   <storage>4</storage>

   <item_source>824</item_source>

   <file_source>824</file_source>

   <file_parent>823</file_parent>

   <file_target>/merged (3).txt</file_target>

   <share_with>user1</share_with>

   <share_with_displayname>user1</share_with_displayname>

   <mail_send>0</mail_send>

  </element>

 </data>

</ocs>

XML;

        // Checks that setting for foldername are used.

        $mock->expects($this->once())->method('is_dir')->with('Moodlefiles')->willReturn(true);

        // In case of true as return value mkcol is not called  to create the folder.

        $shareid = 5;

        $mockocsclient = $this->getMockBuilder(

            \repository_nextcloud\ocs_client::class)->disableOriginalConstructor()->disableOriginalClone()->getMock();

        $mockocsclient->expects($this->exactly(2))->method('call')->with('get_information_of_share',

            array('share_id' => $shareid))->will($this->returnValue($expectedresponse));

        $this->set_private_property($mock, 'ocsclient');

        $this->repo->expects($this->once())->method('move_file_to_folder')->with('/merged (3).txt', 'Moodlefiles',

            $mock)->willReturn(array('success' => 201));

        $this->repo->send_file('', '', '', '');

        // Create test for statuscode 403.

        // Checks that setting for foldername are used.

        $mock->expects($this->once())->method('is_dir')->with('Moodlefiles')->willReturn(true);

        // In case of true as return value mkcol is not called to create the folder.

        $shareid = 5;

        $mockocsclient = $this->getMockBuilder(\repository_nextcloud\ocs_client::class

        )->disableOriginalConstructor()->disableOriginalClone()->getMock();

        $mockocsclient->expects($this->exactly(1))->method('call')->with('get_shares',

            array('path' => '/merged (3).txt', 'reshares' => true))->will($this->returnValue($expectedresponse));

        $mockocsclient->expects($this->exactly(1))->method('call')->with('get_information_of_share',

            array('share_id' => $shareid))->will($this->returnValue($expectedresponse));

        $this->set_private_property($mock, 'ocsclient');

        $this->repo->expects($this->once())->method('move_file_to_folder')->with('/merged (3).txt', 'Moodlefiles',

            $mock)->willReturn(array('success' => 201));

        $this->repo->send_file('', '', '', '');

    }

    /**

     * This function provides the data for test_sync_reference

     *

     * @return array[]

     */

    public function sync_reference_provider(): array {

        return [

            'referecncelastsync done recently' => [

                [

                    'storedfile_record' => [

                            'contextid' => \context_system::instance()->id,

                            'component' => 'core',

                            'filearea'  => 'unittest',

                            'itemid'    => 0,

                            'filepath'  => '/',

                            'filename'  => 'testfile.txt',

                    ],

                    'storedfile_reference' => json_encode(

                        [

                            'type' => 'FILE_REFERENCE',

                            'link' => 'https://test.local/fakelink/',

                            'usesystem' => true,

                            'referencelastsync' => DAYSECS + time()

                        ]

                    ),

                ],

                'mockfunctions' => ['get_referencelastsync'],

                'expectedresult' => false

            ],

            'file without link' => [

                [

                    'storedfile_record' => [

                        'contextid' => \context_system::instance()->id,

                        'component' => 'core',

                        'filearea'  => 'unittest',

                        'itemid'    => 0,

                        'filepath'  => '/',

                        'filename'  => 'testfile.txt',

                    ],

                    'storedfile_reference' => json_encode(

                        [

                            'type' => 'FILE_REFERENCE',

                            'usesystem' => true,

                        ]

                    ),

                ],

                'mockfunctions' => [],

                'expectedresult' => false

            ],

            'file extenstion to exclude' => [

                [

                    'storedfile_record' => [

                        'contextid' => \context_system::instance()->id,

                        'component' => 'core',

                        'filearea'  => 'unittest',

                        'itemid'    => 0,

                        'filepath'  => '/',

                        'filename'  => 'testfile.txt',

                    ],

                    'storedfile_reference' => json_encode(

                        [

                            'link' => 'https://test.local/fakelink/',

                            'type' => 'FILE_REFERENCE',

                            'usesystem' => true,

                        ]

                    ),

                ],

                'mockfunctions' => [],

                'expectedresult' => false

            ],

            'file extenstion for image' => [

                [

                    'storedfile_record' => [

                        'contextid' => \context_system::instance()->id,

                        'component' => 'core',

                        'filearea'  => 'unittest',

                        'itemid'    => 0,

                        'filepath'  => '/',

                        'filename'  => 'testfile.png',

                    ],

                    'storedfile_reference' => json_encode(

                        [

                            'link' => 'https://test.local/fakelink/',

                            'type' => 'FILE_REFERENCE',

                            'usesystem' => true,

                        ]

                    ),

                    'mock_curl' => true,

                ],

                'mockfunctions' => [''],

                'expectedresult' => true

            ],

        ];

    }

    /**

     * Testing sync_reference

     *

     * @dataProvider sync_reference_provider

     * @param array $storedfileargs

     * @param array $storedfilemethodsmock

     * @param bool $expectedresult

     * @return void

     */

    public function test_sync_reference(array $storedfileargs, $storedfilemethodsmock, bool $expectedresult): void {

        $this->resetAfterTest(true);

        if (isset($storedfilemethodsmock[0])) {

            $storedfile = $this->createMock(\stored_file::class);

            if ($storedfilemethodsmock[0] === 'get_referencelastsync') {

                if (!$expectedresult) {

                    $storedfile->method('get_referencelastsync')->willReturn(DAYSECS + time());

                }

            } else {

                $storedfile->method('get_referencelastsync')->willReturn(null);

            }

            $storedfile->method('get_reference')->willReturn($storedfileargs['storedfile_reference']);

            $storedfile->method('get_filepath')->willReturn($storedfileargs['storedfile_record']['filepath']);

            $storedfile->method('get_filename')->willReturn($storedfileargs['storedfile_record']['filename']);

            if ((isset($storedfileargs['mock_curl']) && $storedfileargs)) {

                // Lets mock curl, else it would not serve the purpose here.

                $curl = $this->createMock(\curl::class);

                $curl->method('download_one')->willReturn(true);

                $curl->method('get_info')->willReturn(['http_code' => 200]);

                $reflectionproperty = new \ReflectionProperty($this->repo, 'curl');

                $reflectionproperty->setValue($this->repo, $curl);

            }

        } else {

            $fs = get_file_storage();

            $storedfile = $fs->create_file_from_reference(

                $storedfileargs['storedfile_record'],

                $this->repo->id,

                $storedfileargs['storedfile_reference']);

        }

        $actualresult = $this->repo->sync_reference($storedfile);

        $this->assertEquals($expectedresult, $actualresult);

    }

    /**

     * Helper method, which inserts a given mock value into the repository_nextcloud object.

     *

     * @param mixed $value mock value that will be inserted.

     * @param string $propertyname name of the private property.

     * @return ReflectionProperty the resulting reflection property.

     */

    protected function set_private_property($value, $propertyname) {

        $refclient = new \ReflectionClass($this->repo);