<?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/>.

/**
 * This file contains tests for the question_attempt class.
 *
 * Action methods like start, process_action and finish are assumed to be
 * tested by walkthrough tests in the various behaviours.
 *
 * @package    moodlecore
 * @subpackage questionengine
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


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

global $CFG;
require_once(dirname(__FILE__) . '/../lib.php');
require_once(dirname(__FILE__) . '/helpers.php');


/**
 * Unit tests for the {@link question_attempt} class.
 *
 * These are the tests that don't require any steps.
 *
 * @copyright  2009 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class question_attempt_test extends advanced_testcase {
    private $question;
    private $usageid;
    private $qa;

    protected function setUp() {
        $this->question = test_question_maker::make_question('description');
        $this->question->defaultmark = 3;
        $this->usageid = 13;
        $this->qa = new question_attempt($this->question, $this->usageid);
    }

    protected function tearDown() {
        $this->question = null;
        $this->useageid = null;
        $this->qa = null;
    }

    public function test_constructor_sets_maxmark() {
        $qa = new question_attempt($this->question, $this->usageid);
        $this->assertSame($this->question, $qa->get_question());
        $this->assertEquals(3, $qa->get_max_mark());
    }

    public function test_maxmark_beats_default_mark() {
        $qa = new question_attempt($this->question, $this->usageid, null, 2);
        $this->assertEquals(2, $qa->get_max_mark());
    }

    public function test_get_set_slot() {
        $this->qa->set_slot(7);
        $this->assertEquals(7, $this->qa->get_slot());
    }

    public function test_fagged_initially_false() {
        $this->assertEquals(false, $this->qa->is_flagged());
    }

    public function test_set_is_flagged() {
        $this->qa->set_flagged(true);
        $this->assertEquals(true, $this->qa->is_flagged());
    }

    public function test_get_qt_field_name() {
        $name = $this->qa->get_qt_field_name('test');
        $this->assertRegExp('/^' . preg_quote($this->qa->get_field_prefix(), '/') . '/', $name);
        $this->assertRegExp('/_test$/', $name);
    }

    public function test_get_behaviour_field_name() {
        $name = $this->qa->get_behaviour_field_name('test');
        $this->assertRegExp('/^' . preg_quote($this->qa->get_field_prefix(), '/') . '/', $name);
        $this->assertRegExp('/_-test$/', $name);
    }

    public function test_get_field_prefix() {
        $this->qa->set_slot(7);
        $name = $this->qa->get_field_prefix();
        $this->assertRegExp('/' . preg_quote($this->usageid, '/') . '/', $name);
        $this->assertRegExp('/' . preg_quote($this->qa->get_slot(), '/') . '/', $name);
    }

    public function test_get_submitted_var_not_present_var_returns_null() {
        $this->assertNull($this->qa->get_submitted_var(
                'reallyunlikelyvariablename', PARAM_BOOL));
    }

    public function test_get_submitted_var_param_mark_not_present() {
        $this->assertNull($this->qa->get_submitted_var(
                'name', question_attempt::PARAM_MARK, array()));
    }

    public function test_get_submitted_var_param_mark_blank() {
        $this->assertSame('', $this->qa->get_submitted_var(
                'name', question_attempt::PARAM_MARK, array('name' => '')));
    }

    public function test_get_submitted_var_param_mark_number() {
        $this->assertSame(123.0, $this->qa->get_submitted_var(
                'name', question_attempt::PARAM_MARK, array('name' => '123')));
    }

    public function test_get_submitted_var_param_mark_number_uk_decimal() {
        $this->assertSame(123.45, $this->qa->get_submitted_var(
                'name', question_attempt::PARAM_MARK, array('name' => '123.45')));
    }

    public function test_get_submitted_var_param_mark_number_eu_decimal() {
        $this->assertSame(123.45, $this->qa->get_submitted_var(
                'name', question_attempt::PARAM_MARK, array('name' => '123,45')));
    }

    public function test_get_submitted_var_param_mark_invalid() {
        $this->assertSame(0.0, $this->qa->get_submitted_var(
                'name', question_attempt::PARAM_MARK, array('name' => 'frog')));
    }
}
