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<?php
// This file is part of Moodle - https://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/>.
/**
* Provides the {@link analytics_stats_testcase} class.
*
* @package core_analytics
* @category test
* @copyright 2019 David Mudrák <david@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once(__DIR__ . '/fixtures/test_indicator_fullname.php');
require_once(__DIR__ . '/fixtures/test_target_shortname.php');
/**
* Unit tests for the analytics stats.
*
* @copyright 2019 David Mudrák <david@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class analytics_stats_testcase extends advanced_testcase {
/**
* Set up the test environment.
*/
public function setUp() {
$this->setAdminUser();
}
/**
* Test the {@link \core_analytics\stats::enabled_models()} implementation.
*/
public function test_enabled_models() {
$this->resetAfterTest(true);
// By default, sites have {@link \core_course\analytics\target\no_teaching} and
// {@link \core_user\analytics\target\upcoming_activities_due} enabled.
$this->assertEquals(4, \core_analytics\stats::enabled_models());
$model = \core_analytics\model::create(
\core_analytics\manager::get_target('\core_course\analytics\target\course_dropout'),
[
\core_analytics\manager::get_indicator('\core\analytics\indicator\any_write_action'),
]
);
// Purely adding a new model does not make it included in the stats.
$this->assertEquals(4, \core_analytics\stats::enabled_models());
// New models must be enabled to have them counted.
$model->enable('\core\analytics\time_splitting\quarters');
$this->assertEquals(5, \core_analytics\stats::enabled_models());
}
/**
* Test the {@link \core_analytics\stats::predictions()} implementation.
*/
public function test_predictions() {
$this->resetAfterTest(true);
$model = \core_analytics\model::create(
\core_analytics\manager::get_target('test_target_shortname'),
[
\core_analytics\manager::get_indicator('test_indicator_fullname'),
]
);
$model->enable('\core\analytics\time_splitting\no_splitting');
// Train the model.
$this->getDataGenerator()->create_course(['shortname' => 'a', 'fullname' => 'a', 'visible' => 1]);
$this->getDataGenerator()->create_course(['shortname' => 'b', 'fullname' => 'b', 'visible' => 1]);
$model->train();
// No predictions yet.
$this->assertEquals(0, \core_analytics\stats::predictions());
// Get one new prediction.
$this->getDataGenerator()->create_course(['shortname' => 'aa', 'fullname' => 'aa', 'visible' => 0]);
$result = $model->predict();
$this->assertEquals(1, count($result->predictions));
$this->assertEquals(1, \core_analytics\stats::predictions());
// Nothing changes if there is no new prediction.
$result = $model->predict();
$this->assertFalse(isset($result->predictions));
$this->assertEquals(1, \core_analytics\stats::predictions());
// Get two more predictions, we have three in total now.
$this->getDataGenerator()->create_course(['shortname' => 'bb', 'fullname' => 'bb', 'visible' => 0]);
$this->getDataGenerator()->create_course(['shortname' => 'cc', 'fullname' => 'cc', 'visible' => 0]);
$result = $model->predict();
$this->assertEquals(2, count($result->predictions));
$this->assertEquals(3, \core_analytics\stats::predictions());
}
/**
* Test the {@link \core_analytics\stats::actions()} and {@link \core_analytics\stats::actions_not_useful()} implementation.
*/
public function test_actions() {
global $DB;
$this->resetAfterTest(true);
$model = \core_analytics\model::create(
\core_analytics\manager::get_target('test_target_shortname'),
[
\core_analytics\manager::get_indicator('test_indicator_fullname'),
]
);
$model->enable('\core\analytics\time_splitting\no_splitting');
// Train the model.
$this->getDataGenerator()->create_course(['shortname' => 'a', 'fullname' => 'a', 'visible' => 1]);
$this->getDataGenerator()->create_course(['shortname' => 'b', 'fullname' => 'b', 'visible' => 1]);
$model->train();
// Generate two predictions.
$this->getDataGenerator()->create_course(['shortname' => 'aa', 'fullname' => 'aa', 'visible' => 0]);
$this->getDataGenerator()->create_course(['shortname' => 'bb', 'fullname' => 'bb', 'visible' => 0]);
$model->predict();
list($p1, $p2) = array_values($DB->get_records('analytics_predictions'));
$p1 = new \core_analytics\prediction($p1, []);
$p2 = new \core_analytics\prediction($p2, []);
// No actions executed at the start.
$this->assertEquals(0, \core_analytics\stats::actions());
$this->assertEquals(0, \core_analytics\stats::actions_not_useful());
// The user has acknowledged the first prediction.
$p1->action_executed(\core_analytics\prediction::ACTION_FIXED, $model->get_target());
$this->assertEquals(1, \core_analytics\stats::actions());
$this->assertEquals(0, \core_analytics\stats::actions_not_useful());
// The user has marked the other prediction as not useful.
$p2->action_executed(\core_analytics\prediction::ACTION_INCORRECTLY_FLAGGED, $model->get_target());
$this->assertEquals(2, \core_analytics\stats::actions());
$this->assertEquals(1, \core_analytics\stats::actions_not_useful());
}
}