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See Release Notes

  • Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
  • Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
  • PHP version: minimum PHP 7.3.0 Note: minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is supported too.
<?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 core; /** > * Unit tests of mathslib wrapper and underlying EvalMath library. > use calc_formula; * > * @package core > defined('MOODLE_INTERNAL') || die(); * @category phpunit > * @copyright 2007 Petr Skoda {@link http://skodak.org} > global $CFG; * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later > require_once($CFG->libdir . '/mathslib.php'); */ >
< < defined('MOODLE_INTERNAL') || die(); < < global $CFG; < require_once($CFG->libdir . '/mathslib.php'); < < < class core_mathslib_testcase extends basic_testcase {
> class mathslib_test extends \basic_testcase {
/** * Tests the basic formula evaluation. */ public function test__basic() { $formula = new calc_formula('=1+2'); $res = $formula->evaluate(); $this->assertSame($res, 3, '3+1 is: %s'); } /** * Tests the formula params. */ public function test__params() { $formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30)); $res = $formula->evaluate(); $this->assertSame(60, $res, '10+20+30 is: %s'); } /** * Tests the changed params. */ public function test__changing_params() { $formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30)); $res = $formula->evaluate(); $this->assertSame(60, $res, '10+20+30 is: %s'); $formula->set_params(array('a'=>1, 'b'=>2, 'c'=>3)); $res = $formula->evaluate(); $this->assertSame(6, $res, 'changed params 1+2+3 is: %s'); } /** * Tests the spreadsheet emulation function in formula. */ public function test__calc_function() { $formula = new calc_formula('=sum(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30)); $res = $formula->evaluate(); $this->assertSame(60, $res, 'sum(a, b, c) is: %s'); } public function test_other_functions() { $formula = new calc_formula('=average(1,2,3)'); $this->assertSame(2, $formula->evaluate()); $formula = new calc_formula('=mod(10,3)'); $this->assertSame(1, $formula->evaluate()); $formula = new calc_formula('=power(2,3)'); $this->assertSame(8, $formula->evaluate()); } public function test_conditional_functions() { // Test ifthenelse. $formula = new calc_formula('=ifthenelse(1,2,3)'); $this->assertSame(2, (int)$formula->evaluate()); $formula = new calc_formula('=ifthenelse(0,2,3)'); $this->assertSame(3, (int) $formula->evaluate()); $formula = new calc_formula('=ifthenelse(2<3,2,3)'); $this->assertSame(2, (int) $formula->evaluate()); // Test synonym if. $formula = new calc_formula('=if(1,2,3)'); $this->assertSame(2, (int)$formula->evaluate()); $formula = new calc_formula('=if(0,2,3)'); $this->assertSame(3, (int) $formula->evaluate()); $formula = new calc_formula('=if(2<3,2,3)'); $this->assertSame(2, (int) $formula->evaluate()); // Test cond_and. $formula = new calc_formula('=cond_and(1,1,1)'); $this->assertSame(1, (int)$formula->evaluate()); $formula = new calc_formula('=cond_and(1,1,0)'); $this->assertSame(0, (int) $formula->evaluate()); $formula = new calc_formula('=cond_and(0,0,0)'); $this->assertSame(0, (int) $formula->evaluate()); // Test synonym and. $formula = new calc_formula('=and(1,1,1)'); $this->assertSame(1, (int)$formula->evaluate()); $formula = new calc_formula('=and(1,1,0)'); $this->assertSame(0, (int) $formula->evaluate()); $formula = new calc_formula('=and(0,0,0)'); $this->assertSame(0, (int) $formula->evaluate()); // Test cond_or. $formula = new calc_formula('=cond_or(1,1,1)'); $this->assertSame(1, (int)$formula->evaluate()); $formula = new calc_formula('=cond_or(1,1,0)'); $this->assertSame(1, (int) $formula->evaluate()); $formula = new calc_formula('=cond_or(0,0,0)'); $this->assertSame(0, (int) $formula->evaluate()); // Test synonym or. $formula = new calc_formula('=or(1,1,1)'); $this->assertSame(1, (int)$formula->evaluate()); $formula = new calc_formula('=or(1,1,0)'); $this->assertSame(1, (int) $formula->evaluate()); $formula = new calc_formula('=or(0,0,0)'); $this->assertSame(0, (int) $formula->evaluate()); } public function test_conditional_operators() { $formula = new calc_formula('=2==2'); $this->assertSame(1, $formula->evaluate()); $formula = new calc_formula('=2>3'); $this->assertSame(0, $formula->evaluate()); $formula = new calc_formula('=2<3'); $this->assertSame(1, $formula->evaluate()); $formula = new calc_formula('=(2<=3)'); $this->assertSame(1, $formula->evaluate()); $formula = new calc_formula('=(2<=3)*10'); $this->assertSame(10, $formula->evaluate()); $formula = new calc_formula('=(2>=3)*10'); $this->assertSame(0, $formula->evaluate()); $formula = new calc_formula('=2<3*10'); $this->assertSame(10, $formula->evaluate()); } /** * Tests the min and max functions. */ public function test__minmax_function() { $formula = new calc_formula('=min(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30)); $res = $formula->evaluate(); $this->assertSame(10, $res, 'minimum is: %s'); $formula = new calc_formula('=max(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30)); $res = $formula->evaluate(); $this->assertSame(30, $res, 'maximum is: %s'); } /** * Tests special chars. */ public function test__specialchars() { $formula = new calc_formula('=gi1 + gi2 + gi11', array('gi1'=>10, 'gi2'=>20, 'gi11'=>30)); $res = $formula->evaluate(); $this->assertSame(60, $res, 'sum is: %s'); } /** * Tests some slightly more complex expressions. */ public function test__more_complex_expressions() { $formula = new calc_formula('=pi() + a', array('a'=>10)); $res = $formula->evaluate(); $this->assertSame(pi()+10, $res); $formula = new calc_formula('=pi()^a', array('a'=>10)); $res = $formula->evaluate(); $this->assertSame(pow(pi(), 10), $res); $formula = new calc_formula('=-8*(5/2)^2*(1-sqrt(4))-8'); $res = $formula->evaluate(); $this->assertSame(-8*pow((5/2), 2)*(1-sqrt(4))-8, $res); } /** * Tests some slightly more complex expressions. */ public function test__error_handling() { $formula = new calc_formula('=pi( + a', array('a'=>10)); $res = $formula->evaluate(); $this->assertFalse($res); $this->assertSame(get_string('unexpectedoperator', 'mathslib', '+'), $formula->get_error()); $formula = new calc_formula('=pi('); $res = $formula->evaluate(); $this->assertSame($res, false); $this->assertSame(get_string('expectingaclosingbracket', 'mathslib'), $formula->get_error()); $formula = new calc_formula('=pi()^'); $res = $formula->evaluate(); $this->assertSame($res, false); $this->assertSame(get_string('operatorlacksoperand', 'mathslib', '^'), $formula->get_error()); } public function test_rounding_function() { // Rounding to the default number of decimal places. // The default == 0. $formula = new calc_formula('=round(2.5)'); $this->assertSame(3.0, $formula->evaluate()); $formula = new calc_formula('=round(1.5)'); $this->assertSame(2.0, $formula->evaluate()); $formula = new calc_formula('=round(-1.49)'); $this->assertSame(-1.0, $formula->evaluate()); $formula = new calc_formula('=round(-2.49)'); $this->assertSame(-2.0, $formula->evaluate()); $formula = new calc_formula('=round(-1.5)'); $this->assertSame(-2.0, $formula->evaluate()); $formula = new calc_formula('=round(-2.5)'); $this->assertSame(-3.0, $formula->evaluate()); $formula = new calc_formula('=ceil(2.5)'); $this->assertSame(3.0, $formula->evaluate()); $formula = new calc_formula('=ceil(1.5)'); $this->assertSame(2.0, $formula->evaluate()); $formula = new calc_formula('=ceil(-1.49)'); $this->assertSame(-1.0, $formula->evaluate()); $formula = new calc_formula('=ceil(-2.49)'); $this->assertSame(-2.0, $formula->evaluate()); $formula = new calc_formula('=ceil(-1.5)'); $this->assertSame(-1.0, $formula->evaluate()); $formula = new calc_formula('=ceil(-2.5)'); $this->assertSame(-2.0, $formula->evaluate()); $formula = new calc_formula('=floor(2.5)'); $this->assertSame(2.0, $formula->evaluate()); $formula = new calc_formula('=floor(1.5)'); $this->assertSame(1.0, $formula->evaluate()); $formula = new calc_formula('=floor(-1.49)'); $this->assertSame(-2.0, $formula->evaluate()); $formula = new calc_formula('=floor(-2.49)'); $this->assertSame(-3.0, $formula->evaluate()); $formula = new calc_formula('=floor(-1.5)'); $this->assertSame(-2.0, $formula->evaluate()); $formula = new calc_formula('=floor(-2.5)'); $this->assertSame(-3.0, $formula->evaluate()); // Rounding to an explicit number of decimal places. $formula = new calc_formula('=round(2.5, 1)'); $this->assertSame(2.5, $formula->evaluate()); $formula = new calc_formula('=round(2.5, 0)'); $this->assertSame(3.0, $formula->evaluate()); $formula = new calc_formula('=round(1.2345, 2)'); $this->assertSame(1.23, $formula->evaluate()); $formula = new calc_formula('=round(123.456, -1)'); $this->assertSame(120.0, $formula->evaluate()); } public function test_scientific_notation() { $formula = new calc_formula('=10e10');
< $this->assertEquals(1e11, $formula->evaluate(), '', 1e11*1e-15);
> $this->assertEqualsWithDelta(1e11, $formula->evaluate(), 1e11 * 1e-15);
$formula = new calc_formula('=10e-10');
< $this->assertEquals(1e-9, $formula->evaluate(), '', 1e11*1e-15);
> $this->assertEqualsWithDelta(1e-9, $formula->evaluate(), 1e11 * 1e-15);
$formula = new calc_formula('=10e+10');
< $this->assertEquals(1e11, $formula->evaluate(), '', 1e11*1e-15);
> $this->assertEqualsWithDelta(1e11, $formula->evaluate(), 1e11 * 1e-15);
$formula = new calc_formula('=10e10*5');
< $this->assertEquals(5e11, $formula->evaluate(), '', 1e11*1e-15);
> $this->assertEqualsWithDelta(5e11, $formula->evaluate(), 1e11 * 1e-15);
$formula = new calc_formula('=10e10^2');
< $this->assertEquals(1e22, $formula->evaluate(), '', 1e22*1e-15);
> $this->assertEqualsWithDelta(1e22, $formula->evaluate(), 1e22 * 1e-15);
} public function test_rand_float() { $formula = new calc_formula('=rand_float()'); $result = $formula->evaluate(); $this->assertTrue(is_float($result)); } }