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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 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/>.

/**
 * Repository API unit tests
 *
 * @package   repository
 * @category  phpunit
 * @copyright 2012 Dongsheng Cai {@link http://dongsheng.org}
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

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

class core_repositorylib_testcase extends advanced_testcase {

/**
     * Installing repository tests
     *
     * @copyright 2012 Dongsheng Cai {@link http://dongsheng.org}
     */
    public function test_install_repository() {
        global $CFG, $DB;

$this->resetAfterTest(true);

$syscontext = context_system::instance();
        $repositorypluginname = 'boxnet';
        // override repository permission
        $capability = 'repository/' . $repositorypluginname . ':view';
        $guestroleid = $DB->get_field('role', 'id', array('shortname' => 'guest'));
        assign_capability($capability, CAP_ALLOW, $guestroleid, $syscontext->id, true);

$plugintype = new repository_type($repositorypluginname);
        $pluginid = $plugintype->create(false);
        $this->assertInternalType('int', $pluginid);
        $args = array();
        $args['type'] = $repositorypluginname;
        $repos = repository::get_instances($args);
        $repository = reset($repos);
        $this->assertInstanceOf('repository', $repository);
        $info = $repository->get_meta();
        $this->assertEquals($repositorypluginname, $info->type);
    }

public function test_get_unused_filename() {
        global $USER;

$this->resetAfterTest(true);

$this->setAdminUser();
        $fs = get_file_storage();

$draftitemid = null;
        $context = context_user::instance($USER->id);
        file_prepare_draft_area($draftitemid, $context->id, 'phpunit', 'test_get_unused_filename', 1);

$dummy = array(
            'contextid' => $context->id,
            'component' => 'user',
            'filearea' => 'draft',
            'itemid' => $draftitemid,
            'filepath' => '/',
            'filename' => ''
        );

// Create some files.
        $existingfiles = array(
            'test',
            'test.txt',
            'test (1).txt',
            'test1.txt',
            'test1 (1).txt',
            'test1 (2).txt',
            'test1 (3).txt',
            'test1 (My name is Bob).txt',
            'test2 (555).txt',
            'test3 (1000).txt',
            'test3 (1000MB).txt',
        );
        foreach ($existingfiles as $filename) {
            $dummy['filename'] = $filename;
            $file = $fs->create_file_from_string($dummy, 'blah! ' . $filename);
            $this->assertTrue(repository::draftfile_exists($draftitemid, '/', $filename));
        }

// Actual testing.
        $this->assertEquals('free.txt', repository::get_unused_filename($draftitemid, '/', 'free.txt'));
        $this->assertEquals('test (1)', repository::get_unused_filename($draftitemid, '/', 'test'));
        $this->assertEquals('test (2).txt', repository::get_unused_filename($draftitemid, '/', 'test.txt'));
        $this->assertEquals('test1 (4).txt', repository::get_unused_filename($draftitemid, '/', 'test1.txt'));
        $this->assertEquals('test1 (8).txt', repository::get_unused_filename($draftitemid, '/', 'test1 (8).txt'));
        $this->assertEquals('test1 ().txt', repository::get_unused_filename($draftitemid, '/', 'test1 ().txt'));
        $this->assertEquals('test2 (556).txt', repository::get_unused_filename($draftitemid, '/', 'test2 (555).txt'));
        $this->assertEquals('test3 (1001).txt', repository::get_unused_filename($draftitemid, '/', 'test3 (1000).txt'));
        $this->assertEquals('test3 (1000MB) (1).txt', repository::get_unused_filename($draftitemid, '/', 'test3 (1000MB).txt'));
        $this->assertEquals('test4 (1).txt', repository::get_unused_filename($draftitemid, '/', 'test4 (1).txt'));
    }

public function test_draftfile_exists() {
        global $USER;

$this->resetAfterTest(true);

$this->setAdminUser();
        $fs = get_file_storage();

$draftitemid = file_get_unused_draft_itemid();
        $context = context_user::instance($USER->id);

// Create some files.
        $existingfiles = array(
            'The Matrix.movie',
            'Astalavista.txt',
            'foobar',
        );
        foreach ($existingfiles as $filename) {
            $dummy['filename'] = $filename;
            $file = $fs->create_file_from_string($dummy, 'Content of ' . $filename);
            $this->assertInstanceOf('stored_file', $file);
        }

// Doing the text.
        foreach ($existingfiles as $filename) {
            $this->assertTrue(repository::draftfile_exists($draftitemid, '/', $filename));
        }
        foreach (array('Terminator.movie', 'Where is Wally?', 'barfoo') as $filename) {
            $this->assertFalse(repository::draftfile_exists($draftitemid, '/', $filename));
        }
    }

public function test_can_be_edited_by_user() {
        $this->resetAfterTest(true);

$syscontext = context_system::instance();
        $course = $this->getDataGenerator()->create_course();
        $coursecontext = context_course::instance($course->id);
        $roleid = create_role('A role', 'arole', 'A role', '');
        $user = $this->getDataGenerator()->create_user();
        $this->setUser($user);

// Instance on a site level.
        $this->getDataGenerator()->create_repository_type('flickr_public');
        $repoid = $this->getDataGenerator()->create_repository('flickr_public')->id;
        $systemrepo = repository::get_repository_by_id($repoid, $syscontext);

role_assign($roleid, $user->id, $syscontext->id);
        assign_capability('moodle/site:config', CAP_ALLOW, $roleid, $syscontext, true);
        assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $syscontext, true);
        accesslib_clear_all_caches_for_unit_testing();
        $this->assertTrue($systemrepo->can_be_edited_by_user());

assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $syscontext, true);
        assign_capability('moodle/site:config', CAP_PROHIBIT, $roleid, $syscontext, true);
        accesslib_clear_all_caches_for_unit_testing();
        $this->assertFalse($systemrepo->can_be_edited_by_user());

assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $syscontext, true);
        assign_capability('moodle/site:config', CAP_PROHIBIT, $roleid, $syscontext, true);
        accesslib_clear_all_caches_for_unit_testing();
        $this->assertFalse($systemrepo->can_be_edited_by_user());

role_unassign($roleid, $user->id, $syscontext->id);
        accesslib_clear_all_caches_for_unit_testing();

// Instance on a course level.
        $this->getDataGenerator()->enrol_user($user->id, $course->id, $roleid);

$params = array('contextid' => $coursecontext->id);
        $repoid = $this->getDataGenerator()->create_repository('flickr_public', $params)->id;
        $courserepo = repository::get_repository_by_id($repoid, $coursecontext);

assign_capability('moodle/course:update', CAP_ALLOW, $roleid, $coursecontext, true);
        assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $coursecontext, true);
        accesslib_clear_all_caches_for_unit_testing();
        $this->assertTrue($courserepo->can_be_edited_by_user());

assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $coursecontext, true);
        accesslib_clear_all_caches_for_unit_testing();
        $this->assertFalse($courserepo->can_be_edited_by_user());

assign_capability('moodle/course:update', CAP_ALLOW, $roleid, $coursecontext, true);
        assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $coursecontext, true);
        accesslib_clear_all_caches_for_unit_testing();
        $this->assertFalse($courserepo->can_be_edited_by_user());

role_unassign($roleid, $user->id, $coursecontext->id);
        accesslib_clear_all_caches_for_unit_testing();

// Instance on a user level.
        $otheruser = $this->getDataGenerator()->create_user();
        $otherusercontext = context_user::instance($otheruser->id);
        role_assign($roleid, $user->id, $syscontext->id);
        assign_capability('repository/flickr_public:view', CAP_ALLOW, $roleid, $syscontext, true);
        accesslib_clear_all_caches_for_unit_testing();

// Editing someone else's instance.
        $record = array('contextid' => $otherusercontext->id);
        $repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
        $userrepo = repository::get_repository_by_id($repoid, $syscontext);
        $this->assertFalse($userrepo->can_be_edited_by_user());

// Editing my own instance.
        $usercontext = context_user::instance($user->id);
        $record = array('contextid' => $usercontext->id);
        $repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
        $userrepo = repository::get_repository_by_id($repoid, $syscontext);
        $this->assertTrue($userrepo->can_be_edited_by_user());

}

public function test_check_capability() {
        $this->resetAfterTest(true);

$syscontext = context_system::instance();
        $course1 = $this->getDataGenerator()->create_course();
        $course1context = context_course::instance($course1->id);
        $course2 = $this->getDataGenerator()->create_course();
        $course2context = context_course::instance($course2->id);

$forumdata = new stdClass();
        $forumdata->course = $course1->id;
        $forumc1 = $this->getDataGenerator()->create_module('forum', $forumdata);
        $forumc1context = context_module::instance($forumc1->cmid);
        $forumdata->course = $course2->id;
        $forumc2 = $this->getDataGenerator()->create_module('forum', $forumdata);
        $forumc2context = context_module::instance($forumc2->cmid);

$blockdata = new stdClass();
        $blockdata->parentcontextid = $course1context->id;
        $blockc1 = $this->getDataGenerator()->create_block('online_users', $blockdata);
        $blockc1context = context_block::instance($blockc1->id);
        $blockdata->parentcontextid = $course2context->id;
        $blockc2 = $this->getDataGenerator()->create_block('online_users', $blockdata);
        $blockc2context = context_block::instance($blockc2->id);

$user1 = $this->getDataGenerator()->create_user();
        $user1context = context_user::instance($user1->id);
        $user2 = $this->getDataGenerator()->create_user();
        $user2context = context_user::instance($user2->id);

// New role prohibiting Flickr Public access.
        $roleid = create_role('No Flickr Public', 'noflickrpublic', 'No Flickr Public', '');
        assign_capability('repository/flickr_public:view', CAP_PROHIBIT, $roleid, $syscontext, true);

// Disallow system access to Flickr Public to user 2.
        role_assign($roleid, $user2->id, $syscontext->id);
        accesslib_clear_all_caches_for_unit_testing();

// Enable repositories.
        $this->getDataGenerator()->create_repository_type('flickr_public');
        $this->getDataGenerator()->create_repository_type('dropbox');

// Instance on a site level.
        $repoid = $this->getDataGenerator()->create_repository('flickr_public')->id;
        $systemrepo = repository::get_repository_by_id($repoid, $syscontext);

// Check that everyone with right capability can view a site-wide repository.
        $this->setUser($user1);
        $this->assertTrue($systemrepo->check_capability());

// Without the capability, we cannot view a site-wide repository.
        $this->setUser($user2);
        $caughtexception = false;
        try {
            $systemrepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// Instance on a course level.
        $record = new stdClass();
        $record->contextid = $course1context->id;
        $courserepoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;

// Within the course, I can view the repository.
        $courserepo = repository::get_repository_by_id($courserepoid, $course1context);
        $this->setUser($user1);
        $this->assertTrue($courserepo->check_capability());
        // But not without the capability.
        $this->setUser($user2);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// From another course I cannot, with or without the capability.
        $courserepo = repository::get_repository_by_id($courserepoid, $course2context);
        $this->setUser($user1);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);
        $this->setUser($user2);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// From a module within the course, I can view the repository.
        $courserepo = repository::get_repository_by_id($courserepoid, $forumc1context);
        $this->setUser($user1);
        $this->assertTrue($courserepo->check_capability());
        // But not without the capability.
        $this->setUser($user2);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// From a module in the wrong course, I cannot view the repository.
        $courserepo = repository::get_repository_by_id($courserepoid, $forumc2context);
        $this->setUser($user1);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// From a block within the course, I can view the repository.
        $courserepo = repository::get_repository_by_id($courserepoid, $blockc1context);
        $this->setUser($user1);
        $this->assertTrue($courserepo->check_capability());
        // But not without the capability.
        $this->setUser($user2);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// From a block in the wrong course, I cannot view the repository.
        $courserepo = repository::get_repository_by_id($courserepoid, $blockc2context);
        $this->setUser($user1);
        $caughtexception = false;
        try {
            $courserepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// Instance on a user level.
        // Instance on a course level.
        $record = new stdClass();
        $record->contextid = $user1context->id;
        $user1repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;
        $record->contextid = $user2context->id;
        $user2repoid = $this->getDataGenerator()->create_repository('flickr_public', $record)->id;

// Check that a user can see its own repository.
        $userrepo = repository::get_repository_by_id($user1repoid, $syscontext);
        $this->setUser($user1);
        $this->assertTrue($userrepo->check_capability());
        // But not without the capability.
        $userrepo = repository::get_repository_by_id($user2repoid, $syscontext);
        $this->setUser($user2);
        $caughtexception = false;
        try {
            $userrepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// Check that a user cannot see someone's repository.
        $userrepo = repository::get_repository_by_id($user2repoid, $syscontext);
        $this->setUser($user1);
        $caughtexception = false;
        try {
            $userrepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);
        // Make sure the repo from user 2 was accessible.
        role_unassign($roleid, $user2->id, $syscontext->id);
        accesslib_clear_all_caches_for_unit_testing();
        $this->setUser($user2);
        $this->assertTrue($userrepo->check_capability());
        role_assign($roleid, $user2->id, $syscontext->id);
        accesslib_clear_all_caches_for_unit_testing();

// Check that a user can view SOME repositories when logged in as someone else.
        $params = new stdClass();
        $params->name = 'Dropbox';
        $params->dropbox_key = 'key';
        $params->dropbox_secret = 'secret';
        $privaterepoid = $this->getDataGenerator()->create_repository('dropbox')->id;
        $notprivaterepoid = $this->getDataGenerator()->create_repository('upload')->id;

$privaterepo = repository::get_repository_by_id($privaterepoid, $syscontext);
        $notprivaterepo = repository::get_repository_by_id($notprivaterepoid, $syscontext);
        $userrepo = repository::get_repository_by_id($user1repoid, $syscontext);

$this->setAdminUser();
        \core\session\manager::loginas($user1->id, $syscontext);

// Logged in as, I cannot view a user instance.
        $caughtexception = false;
        try {
            $userrepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// Logged in as, I cannot view a private instance.
        $caughtexception = false;
        try {
            $privaterepo->check_capability();
        } catch (repository_exception $e) {
            $caughtexception = true;
        }
        $this->assertTrue($caughtexception);

// Logged in as, I can view a non-private instance.
        $this->assertTrue($notprivaterepo->check_capability());
    }

function test_delete_all_for_context() {
        global $DB;
        $this->resetAfterTest(true);

$this->setAdminUser();
        $course = $this->getDataGenerator()->create_course();
        $user = $this->getDataGenerator()->create_user();
        $this->getDataGenerator()->create_repository_type('flickr_public');
        $this->getDataGenerator()->create_repository_type('filesystem');
        $coursecontext = context_course::instance($course->id);
        $usercontext = context_user::instance($user->id);

// Creating course instances.
        $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $coursecontext->id));
        $courserepo1 = repository::get_repository_by_id($repo->id, $coursecontext);
        $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));

$repo = $this->getDataGenerator()->create_repository('filesystem', array('contextid' => $coursecontext->id));
        $courserepo2 = repository::get_repository_by_id($repo->id, $coursecontext);
        $this->assertEquals(2, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));

// Creating user instances.
        $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $usercontext->id));
        $userrepo1 = repository::get_repository_by_id($repo->id, $usercontext);
        $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));

$repo = $this->getDataGenerator()->create_repository('filesystem', array('contextid' => $usercontext->id));
        $userrepo2 = repository::get_repository_by_id($repo->id, $usercontext);
        $this->assertEquals(2, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));

// Simulation of course deletion.
        repository::delete_all_for_context($coursecontext->id);
        $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
        $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $courserepo1->id)));
        $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $courserepo2->id)));
        $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $courserepo1->id)));
        $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $courserepo2->id)));

// Simulation of user deletion.
        repository::delete_all_for_context($usercontext->id);
        $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
        $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $userrepo1->id)));
        $this->assertEquals(0, $DB->count_records('repository_instances', array('id' => $userrepo2->id)));
        $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $userrepo1->id)));
        $this->assertEquals(0, $DB->count_records('repository_instance_config', array('instanceid' => $userrepo2->id)));

// Checking deletion upon course context deletion.
        $course = $this->getDataGenerator()->create_course();
        $coursecontext = context_course::instance($course->id);
        $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $coursecontext->id));
        $courserepo = repository::get_repository_by_id($repo->id, $coursecontext);
        $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
        $coursecontext->delete();
        $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));

// Checking deletion upon user context deletion.
        $user = $this->getDataGenerator()->create_user();
        $usercontext = context_user::instance($user->id);
        $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $usercontext->id));
        $userrepo = repository::get_repository_by_id($repo->id, $usercontext);
        $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
        $usercontext->delete();
        $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));

// Checking deletion upon course deletion.
        $course = $this->getDataGenerator()->create_course();
        $coursecontext = context_course::instance($course->id);
        $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $coursecontext->id));
        $courserepo = repository::get_repository_by_id($repo->id, $coursecontext);
        $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));
        delete_course($course, false);
        $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $coursecontext->id)));

// Checking deletion upon user deletion.
        $user = $this->getDataGenerator()->create_user();
        $usercontext = context_user::instance($user->id);
        $repo = $this->getDataGenerator()->create_repository('flickr_public', array('contextid' => $usercontext->id));
        $userrepo = repository::get_repository_by_id($repo->id, $usercontext);
        $this->assertEquals(1, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
        delete_user($user);
        $this->assertEquals(0, $DB->count_records('repository_instances', array('contextid' => $usercontext->id)));
    }
}