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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/>.

/**
 * Unit tests for forms lib.
 *
 * This file contains all unit test related to forms library.
 *
 * @package    core_form
 * @category   phpunit
 * @copyright  2009 Tim Hunt
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

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

global $CFG;
require_once($CFG->libdir . '/form/duration.php');

/**
 * Unit tests for MoodleQuickForm_duration
 *
 * Contains test cases for testing MoodleQuickForm_duration
 *
 * @package    core_form
 * @category   phpunit
 * @copyright  2009 Tim Hunt
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class core_form_duration_testcase extends basic_testcase {
    /** @var MoodleQuickForm Keeps reference of dummy form object */
    private $mform;
    /** @var MoodleQuickForm_duration Keeps reference of MoodleQuickForm_duration object */
    private $element;

/**
     * Initalize test wide variable, it is called in start of the testcase
     */
    protected function setUp() {
        parent::setUp();

// Get form data.
        $form = new temp_form_duration();
        $this->mform = $form->getform();
        $this->element = $this->mform->addElement('duration', 'duration');
    }

/**
     * Clears the data set in the setUp() method call.
     * @see duration_form_element_test::setUp()
     */
    protected function tearDown() {
        $this->element = null;
    }

/**
     * Testcase for testing contructor.
     * @expectedException coding_exception
     * @retrun void
     */
    public function test_constructor() {
        // Test trying to create with an invalid unit.
        $this->element = $this->mform->addElement('duration', 'testel', null, array('defaultunit' => 123, 'optional' => false));
    }

/**
     * Testcase for testing units (seconds, minutes, hours and days)
     */
    public function test_get_units() {
        $units = $this->element->get_units();
        ksort($units);
        $this->assertEquals($units, array(1 => get_string('seconds'), 60 => get_string('minutes'),
            3600 => get_string('hours'), 86400 => get_string('days'), 604800 => get_string('weeks')));
    }

/**
     * Testcase for testing conversion of seconds to the best possible unit
     */
    public function test_seconds_to_unit() {
        $this->assertEquals(array(0, 60), $this->element->seconds_to_unit(0)); // Zero minutes, for a nice default unit.
        $this->assertEquals(array(1, 1), $this->element->seconds_to_unit(1));
        $this->assertEquals(array(3601, 1), $this->element->seconds_to_unit(3601));
        $this->assertEquals(array(1, 60), $this->element->seconds_to_unit(60));
        $this->assertEquals(array(3, 60), $this->element->seconds_to_unit(180));
        $this->assertEquals(array(1, 3600), $this->element->seconds_to_unit(3600));
        $this->assertEquals(array(2, 3600), $this->element->seconds_to_unit(7200));
        $this->assertEquals(array(1, 86400), $this->element->seconds_to_unit(86400));
        $this->assertEquals(array(25, 3600), $this->element->seconds_to_unit(90000));

$this->element = $this->mform->addElement('duration', 'testel', null, array('defaultunit' => 86400, 'optional' => false));
        $this->assertEquals(array(0, 86400), $this->element->seconds_to_unit(0)); // Zero minutes, for a nice default unit.
    }

/**
     * Testcase to check generated timestamp
     */
    public function test_exportValue() {
        /** @var MoodleQuickForm_duration $el */
        $el = $this->mform->addElement('duration', 'testel');
        $values = array('testel' => array('number' => 10, 'timeunit' => 1));
        $this->assertEquals(array('testel' => 10), $el->exportValue($values, true));
        $this->assertEquals(10, $el->exportValue($values));
        $values = array('testel' => array('number' => 3, 'timeunit' => 60));
        $this->assertEquals(array('testel' => 180), $el->exportValue($values, true));
        $this->assertEquals(180, $el->exportValue($values));
        $values = array('testel' => array('number' => 1.5, 'timeunit' => 60));
        $this->assertEquals(array('testel' => 90), $el->exportValue($values, true));
        $this->assertEquals(90, $el->exportValue($values));
        $values = array('testel' => array('number' => 2, 'timeunit' => 3600));
        $this->assertEquals(array('testel' => 7200), $el->exportValue($values, true));
        $this->assertEquals(7200, $el->exportValue($values));
        $values = array('testel' => array('number' => 1, 'timeunit' => 86400));
        $this->assertEquals(array('testel' => 86400), $el->exportValue($values, true));
        $this->assertEquals(86400, $el->exportValue($values));
        $values = array('testel' => array('number' => 0, 'timeunit' => 3600));
        $this->assertEquals(array('testel' => 0), $el->exportValue($values, true));
        $this->assertEquals(0, $el->exportValue($values));

$el = $this->mform->addElement('duration', 'testel', null, array('optional' => true));
        $values = array('testel' => array('number' => 10, 'timeunit' => 1));
        $this->assertEquals(array('testel' => 0), $el->exportValue($values, true));
        $this->assertEquals(0, $el->exportValue($values));
        $values = array('testel' => array('number' => 20, 'timeunit' => 1, 'enabled' => 1));
        $this->assertEquals(array('testel' => 20), $el->exportValue($values, true));
        $this->assertEquals(20, $el->exportValue($values));

// Optional element.
        $el2 = $this->mform->addElement('duration', 'testel', '', ['optional' => true]);
        $values = array('testel' => array('number' => 10, 'timeunit' => 1, 'enabled' => 1));
        $this->assertEquals(array('testel' => 10), $el2->exportValue($values, true));
        $this->assertEquals(10, $el2->exportValue($values));
        $values = array('testel' => array('number' => 10, 'timeunit' => 1, 'enabled' => 0));
        $this->assertEquals(array('testel' => 0), $el2->exportValue($values, true));
        $this->assertEquals(null, $el2->exportValue($values));
    }
}

/**
 * Form object to be used in test case.
 */
class temp_form_duration extends moodleform {
    /**
     * Form definition.
     */
    public function definition() {
        // No definition required.
    }
    /**
     * Returns form reference
     * @return MoodleQuickForm
     */
    public function getform() {
        $mform = $this->_form;
        // Set submitted flag, to simulate submission.
        $mform->_flagSubmitted = true;
        return $mform;
    }
}