C:/xampp/htdocs/moodle/mod/quiz/accessrule/ipaddress/simpletest/testrule.php

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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/>.

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

require_once($CFG->dirroot . '/mod/quiz/accessrule/ipaddress/rule.php');


class quizaccess_ipaddress_test extends UnitTestCase {
    public static $includecoverage = array('mod/quiz/accessrule/ipaddress/rule.php');

    public function test_ipaddress_access_rule() {
        $quiz = new stdClass();
        $attempt = new stdClass();
        $cm = new stdClass();
        $cm->id = 0;

        // Test the allowed case by getting the user's IP address. However, this
        // does not always work, for example using the mac install package on my laptop.
        $quiz->subnet = getremoteaddr(null);
        if (!empty($quiz->subnet)) {
            $quiz->questions = '';
            $quizobj = new quiz($quiz, $cm, null);
            $rule = new quizaccess_ipaddress($quizobj, 0);

            $this->assertFalse($rule->prevent_access());
            $this->assertFalse($rule->description());
            $this->assertFalse($rule->prevent_new_attempt(0, $attempt));
            $this->assertFalse($rule->is_finished(0, $attempt));
            $this->assertFalse($rule->time_left($attempt, 1));
        }

        $quiz->subnet = '0.0.0.0';
        $quiz->questions = '';
        $quizobj = new quiz($quiz, $cm, null);
        $rule = new quizaccess_ipaddress($quizobj, 0);

        $this->assertTrue($rule->prevent_access());
        $this->assertFalse($rule->description());
        $this->assertFalse($rule->prevent_new_attempt(0, $attempt));
        $this->assertFalse($rule->is_finished(0, $attempt));
        $this->assertFalse($rule->time_left($attempt, 1));
    }
}