Proyectos de Subversion Moodle

<?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/>.

namespace core_xapi\external;

use core_xapi\xapi_exception;

use core_xapi\local\statement\item_agent;

use externallib_advanced_testcase;

use core_external\external_api;

use core_xapi\iri;

use core_xapi\local\state;

use core_xapi\test_helper;

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

global $CFG;

require_once($CFG->dirroot . '/webservice/tests/helpers.php');

/**

 * Unit tests for xAPI post state webservice.

 *

 * @package    core_xapi

 * @covers     \core_xapi\external\post_state

 * @since      Moodle 4.2

 * @copyright  2023 Sara Arjona (sara@moodle.com)

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

 */

class post_state_test extends externallib_advanced_testcase {

    /**

     * Setup to ensure that fixtures are loaded.

     */

    public static function setUpBeforeClass(): void {

        global $CFG;

        require_once($CFG->dirroot . '/lib/xapi/tests/helper.php');

    }

    /**

     * Testing different component names on valid states.

     *

     * @dataProvider components_provider

     * @param string $component component name

     * @param string|null $expected expected results

     */

    public function test_component_names(string $component, ?string $expected): void {

        $this->resetAfterTest();

        // Scenario.

        $this->setAdminUser();

        // Perform test.

        $data = test_helper::create_state();

        $this->post_state_data($component, $data, $expected);

    }

    /**

     * Data provider for the test_component_names tests.

     *

     * @return  array

     */

    public function components_provider(): array {

        return [

            'Inexistent component' => [

                'component' => 'inexistent_component',

                'expected' => null,

            ],

            'Compatible component' => [

                'component' => 'fake_component',

                'expected' => 'true',

            ],

            'Incompatible component' => [

                'component' => 'core_xapi',

                'expected' => null,

            ],

        ];

    }

    /**

     * Testing invalid agent.

     *

     */

    public function test_invalid_agent(): void {

        $this->resetAfterTest();

        // Scenario.

        $this->setAdminUser();

        $other = $this->getDataGenerator()->create_user();

        // Invalid agent (use different user, instead of the current one).

        $info = [

            'agent' => item_agent::create_from_user($other),

        ];

        $data = test_helper::create_state($info);

        $this->post_state_data('fake_component', $data, null);

    }

    /**

     * Testing valid/invalid state.

     *

     * @dataProvider states_provider

     * @param string $stateid The xAPI state id.

     * @param string|null $expected Expected results.

     * @return void

     */

    public function test_post_state(string $stateid, ?string $expected): void {

        $this->resetAfterTest();

        // Scenario.

        $this->setAdminUser();

        // Perform test.

        $info = [

            'stateid' => $stateid,

        ];

        $data = test_helper::create_state($info);

        $this->post_state_data('fake_component', $data, $expected);

    }

    /**

     * Data provider for the test_post_state tests.

     *

     * @return array

     */

    public function states_provider(): array {

        return [

            'Empty stateid' => [

                'stateid' => '',

                'expected' => 'true',

            ],

            'Valid stateid (any value but paella)' => [

                'stateid' => 'sangria',

                'expected' => 'true',

            ],

            'Invalid stateid' => [

                'stateid' => 'paella',

                'expected' => null,

            ],

        ];

    }

    /**

     * Return a xAPI external webservice class to operate.

     *

     * The test needs to fake a component in order to test without

     * using a real one. This way if in the future any component

     * implement it's xAPI handler this test will continue working.

     *

     * @return post_state the external class

     */

    private function get_external_class(): post_state {

        $ws = new class extends post_state {

            /**

             * Method to override validate_component.

             *

             * @param string $component  The component name in frankenstyle.

             */

            protected static function validate_component(string $component): void {

                if ($component != 'fake_component') {

                    parent::validate_component($component);

                }

            }

        };

        return $ws;

    }

    /**

     * This function do all checks from a standard post_state request.

     *

     * The reason for this function is because states crafting (special in error

     * scenarios) is complicated to do via data providers because every test need a specific

     * testing conditions. For this reason alls tests creates a scenario and then uses this

     * function to check the results.

     *

     * @param string $component component name

     * @param state $data data to encode and send to post_state

     * @param string $expected expected results (if null an exception is expected)

     */

    private function post_state_data(string $component, state $data, ?string $expected): void {

        global $DB;

        // Get current states in database.

        $currentstates = $DB->count_records('xapi_states');

        // When no result is expected, an exception will be incurred.

        if (is_null($expected)) {

            $this->expectException(xapi_exception::class);

        }

        $external = $this->get_external_class();

        $result = $external::execute(

            $component,

            iri::generate($data->get_activity_id(), 'activity'),

            json_encode($data->get_agent()),

            $data->get_state_id(),

            json_encode($data->jsonSerialize()),

            $data->get_registration()

        );

        $result = external_api::clean_returnvalue($external::execute_returns(), $result);

        // Check the state has been saved with the expected values.

        $this->assertTrue($result);

        $records = $DB->get_records('xapi_states');

        $this->assertCount($currentstates + 1, $records);

        $record = reset($records);

        $this->assertEquals($component, $record->component);

        $this->assertEquals($data->get_activity_id(), $record->itemid);

        $this->assertEquals($data->get_user()->id, $record->userid);

        $this->assertEquals(json_encode($data->jsonSerialize()), $record->statedata);

        $this->assertEquals($data->get_registration(), $record->registration);

    }

}