mirror of
https://github.com/moodle/moodle.git
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241 lines
8.2 KiB
PHP
241 lines
8.2 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Unit tests of mathslib wrapper and underlying EvalMath library.
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*
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* @package core
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* @category phpunit
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* @copyright 2007 Petr Skoda {@link http://skodak.org}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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global $CFG;
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require_once($CFG->libdir . '/mathslib.php');
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class mathsslib_testcase extends basic_testcase {
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/**
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* Tests the basic formula evaluation
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*/
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public function test__basic() {
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$formula = new calc_formula('=1+2');
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$res = $formula->evaluate();
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$this->assertEquals($res, 3, '3+1 is: %s');
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}
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/**
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* Tests the formula params
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*/
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public function test__params() {
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$formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30));
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$res = $formula->evaluate();
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$this->assertEquals($res, 60, '10+20+30 is: %s');
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}
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/**
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* Tests the changed params
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*/
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public function test__changing_params() {
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$formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30));
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$res = $formula->evaluate();
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$this->assertEquals($res, 60, '10+20+30 is: %s');
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$formula->set_params(array('a'=>1, 'b'=>2, 'c'=>3));
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$res = $formula->evaluate();
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$this->assertEquals($res, 6, 'changed params 1+2+3 is: %s');
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}
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/**
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* Tests the spreadsheet emulation function in formula
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*/
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public function test__calc_function() {
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$formula = new calc_formula('=sum(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
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$res = $formula->evaluate();
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$this->assertEquals($res, 60, 'sum(a, b, c) is: %s');
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}
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public function test_other_functions() {
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$formula = new calc_formula('=average(1,2,3)');
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$this->assertEquals($formula->evaluate(), 2);
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$formula = new calc_formula('=mod(10,3)');
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$this->assertEquals($formula->evaluate(), 1);
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$formula = new calc_formula('=power(2,3)');
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$this->assertEquals($formula->evaluate(), 8);
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}
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/**
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* Tests the min and max functions
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*/
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public function test__minmax_function() {
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$formula = new calc_formula('=min(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
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$res = $formula->evaluate();
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$this->assertEquals($res, 10, 'minimum is: %s');
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$formula = new calc_formula('=max(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
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$res = $formula->evaluate();
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$this->assertEquals($res, 30, 'maximum is: %s');
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}
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/**
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* Tests special chars
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*/
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public function test__specialchars() {
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$formula = new calc_formula('=gi1 + gi2 + gi11', array('gi1'=>10, 'gi2'=>20, 'gi11'=>30));
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$res = $formula->evaluate();
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$this->assertEquals($res, 60, 'sum is: %s');
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}
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/**
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* Tests some slightly more complex expressions
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*/
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public function test__more_complex_expressions() {
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$formula = new calc_formula('=pi() + a', array('a'=>10));
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$res = $formula->evaluate();
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$this->assertEquals($res, pi()+10);
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$formula = new calc_formula('=pi()^a', array('a'=>10));
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$res = $formula->evaluate();
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$this->assertEquals($res, pow(pi(), 10));
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$formula = new calc_formula('=-8*(5/2)^2*(1-sqrt(4))-8');
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$res = $formula->evaluate();
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$this->assertEquals($res, -8*pow((5/2), 2)*(1-sqrt(4))-8);
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}
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/**
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* Tests some slightly more complex expressions
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*/
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public function test__error_handling() {
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$formula = new calc_formula('=pi( + a', array('a'=>10));
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$res = $formula->evaluate();
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$this->assertEquals($res, false);
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$this->assertEquals($formula->get_error(),
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get_string('unexpectedoperator', 'mathslib', '+'));
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$formula = new calc_formula('=pi(');
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$res = $formula->evaluate();
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$this->assertEquals($res, false);
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$this->assertEquals($formula->get_error(),
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get_string('expectingaclosingbracket', 'mathslib'));
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$formula = new calc_formula('=pi()^');
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$res = $formula->evaluate();
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$this->assertEquals($res, false);
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$this->assertEquals($formula->get_error(),
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get_string('operatorlacksoperand', 'mathslib', '^'));
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}
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public function test_rounding_function() {
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// Rounding to the default number of decimal places
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// The default == 0
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$formula = new calc_formula('=round(2.5)');
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$this->assertEquals($formula->evaluate(), 3);
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$formula = new calc_formula('=round(1.5)');
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$this->assertEquals($formula->evaluate(), 2);
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$formula = new calc_formula('=round(-1.49)');
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$this->assertEquals($formula->evaluate(), -1);
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$formula = new calc_formula('=round(-2.49)');
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$this->assertEquals($formula->evaluate(), -2);
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$formula = new calc_formula('=round(-1.5)');
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$this->assertEquals($formula->evaluate(), -2);
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$formula = new calc_formula('=round(-2.5)');
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$this->assertEquals($formula->evaluate(), -3);
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$formula = new calc_formula('=ceil(2.5)');
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$this->assertEquals($formula->evaluate(), 3);
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$formula = new calc_formula('=ceil(1.5)');
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$this->assertEquals($formula->evaluate(), 2);
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$formula = new calc_formula('=ceil(-1.49)');
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$this->assertEquals($formula->evaluate(), -1);
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$formula = new calc_formula('=ceil(-2.49)');
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$this->assertEquals($formula->evaluate(), -2);
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$formula = new calc_formula('=ceil(-1.5)');
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$this->assertEquals($formula->evaluate(), -1);
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$formula = new calc_formula('=ceil(-2.5)');
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$this->assertEquals($formula->evaluate(), -2);
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$formula = new calc_formula('=floor(2.5)');
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$this->assertEquals($formula->evaluate(), 2);
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$formula = new calc_formula('=floor(1.5)');
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$this->assertEquals($formula->evaluate(), 1);
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$formula = new calc_formula('=floor(-1.49)');
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$this->assertEquals($formula->evaluate(), -2);
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$formula = new calc_formula('=floor(-2.49)');
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$this->assertEquals($formula->evaluate(), -3);
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$formula = new calc_formula('=floor(-1.5)');
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$this->assertEquals($formula->evaluate(), -2);
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$formula = new calc_formula('=floor(-2.5)');
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$this->assertEquals($formula->evaluate(), -3);
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// Rounding to an explicit number of decimal places
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$formula = new calc_formula('=round(2.5, 1)');
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$this->assertEquals($formula->evaluate(), 2.5);
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$formula = new calc_formula('=round(2.5, 0)');
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$this->assertEquals($formula->evaluate(), 3);
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$formula = new calc_formula('=round(1.2345, 2)');
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$this->assertEquals($formula->evaluate(), 1.23);
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$formula = new calc_formula('=round(123.456, -1)');
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$this->assertEquals($formula->evaluate(), 120);
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}
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public function test_scientific_notation() {
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$formula = new calc_formula('=10e10');
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$this->assertEquals($formula->evaluate(), 1e11, '', 1e11*1e-15);
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$formula = new calc_formula('=10e-10');
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$this->assertEquals($formula->evaluate(), 1e-9, '', 1e11*1e-15);
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$formula = new calc_formula('=10e+10');
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$this->assertEquals($formula->evaluate(), 1e11, '', 1e11*1e-15);
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$formula = new calc_formula('=10e10*5');
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$this->assertEquals($formula->evaluate(), 5e11, '', 1e11*1e-15);
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$formula = new calc_formula('=10e10^2');
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$this->assertEquals($formula->evaluate(), 1e22, '', 1e22*1e-15);
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}
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public function test_rand_float() {
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$formula = new calc_formula('=rand_float()');
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$result = $formula->evaluate();
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$this->assertTrue(is_float($result));
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}
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}
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