<?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 qtype_numerical; use qtype_numerical_answer; defined('MOODLE_INTERNAL') || die(); global $CFG; require_once($CFG->dirroot . '/question/engine/tests/helpers.php'); require_once($CFG->dirroot . '/question/type/numerical/question.php'); /** * Unit tests for the numerical question definition class. * * @package qtype_numerical * @category test * @copyright 2008 The Open University * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class answer_test extends \advanced_testcase { public function test_within_tolerance_nominal() { $answer = new qtype_numerical_answer(13, 7.0, 1.0, '', FORMAT_MOODLE, 1.0); $this->assertFalse($answer->within_tolerance(5.99)); $this->assertTrue($answer->within_tolerance(6)); $this->assertTrue($answer->within_tolerance(7)); $this->assertTrue($answer->within_tolerance(8)); $this->assertFalse($answer->within_tolerance(8.01)); } public function test_within_tolerance_nominal_zero() { // Either an answer or tolerance of 0 requires special care. We still // don't want to end up comparing two floats for absolute equality. // Zero tol, non-zero answer. $answer = new qtype_numerical_answer(13, 1e-20, 1.0, '', FORMAT_MOODLE, 0.0); $this->assertFalse($answer->within_tolerance(0.9999999e-20)); $this->assertTrue($answer->within_tolerance(1e-20)); $this->assertFalse($answer->within_tolerance(1.0000001e-20)); // Non-zero tol, zero answer. $answer = new qtype_numerical_answer(13, 0.0, 1.0, '', FORMAT_MOODLE, 1e-24); $this->assertFalse($answer->within_tolerance(-2e-24)); $this->assertTrue($answer->within_tolerance(-1e-24)); $this->assertTrue($answer->within_tolerance(0)); $this->assertTrue($answer->within_tolerance(1e-24)); $this->assertFalse($answer->within_tolerance(2e-24)); // Zero tol, zero answer. $answer = new qtype_numerical_answer(13, 0.0, 1.0, '', FORMAT_MOODLE, 1e-24); $this->assertFalse($answer->within_tolerance(-1e-20)); $this->assertTrue($answer->within_tolerance(-1e-35)); $this->assertTrue($answer->within_tolerance(0)); $this->assertTrue($answer->within_tolerance(1e-35)); $this->assertFalse($answer->within_tolerance(1e-20)); // Non-zero tol, non-zero answer. $answer = new qtype_numerical_answer(13, 1e-20, 1.0, '', FORMAT_MOODLE, 1e-24); $this->assertFalse($answer->within_tolerance(1.0002e-20)); $this->assertTrue($answer->within_tolerance(1.0001e-20)); $this->assertTrue($answer->within_tolerance(1e-20)); $this->assertTrue($answer->within_tolerance(1.0001e-20)); $this->assertFalse($answer->within_tolerance(1.0002e-20)); } public function test_within_tolerance_blank() { $answer = new qtype_numerical_answer(13, 1234, 1.0, '', FORMAT_MOODLE, ''); $this->assertTrue($answer->within_tolerance(1234)); $this->assertFalse($answer->within_tolerance(1234.000001)); $this->assertFalse($answer->within_tolerance(0)); } public function test_within_tolerance_relative() { $answer = new qtype_numerical_answer(13, 7.0, 1.0, '', FORMAT_MOODLE, 0.1); $answer->tolerancetype = 1; $this->assertFalse($answer->within_tolerance(6.29)); $this->assertTrue($answer->within_tolerance(6.3)); $this->assertTrue($answer->within_tolerance(7)); $this->assertTrue($answer->within_tolerance(7.7)); $this->assertFalse($answer->within_tolerance(7.71)); } public function test_within_tolerance_geometric() { $answer = new qtype_numerical_answer(13, 7.0, 1.0, '', FORMAT_MOODLE, 1.0); $answer->tolerancetype = 3; $this->assertFalse($answer->within_tolerance(3.49)); $this->assertTrue($answer->within_tolerance(3.5)); $this->assertTrue($answer->within_tolerance(7)); $this->assertTrue($answer->within_tolerance(14)); $this->assertFalse($answer->within_tolerance(14.01));> } > // Geometric tolerance, negative answer. } > $answer = new qtype_numerical_answer(13, -7.0, 1.0, '', FORMAT_MOODLE, 1.0); > $answer->tolerancetype = 3; > > $this->assertFalse($answer->within_tolerance(-3.49)); > $this->assertTrue($answer->within_tolerance(-3.5)); > $this->assertTrue($answer->within_tolerance(-7)); > $this->assertTrue($answer->within_tolerance(-14)); > $this->assertFalse($answer->within_tolerance(-14.01));