ilMathTest.php

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<?php
/* Copyright (c) 1998-2016 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilMathTest extends PHPUnit_Framework_TestCase
{
        const DEFAULT_SCALE = '50';

        protected $eval_math;

        protected function setUp()
        {
                require_once 'Services/Math/classes/class.ilMath.php';
                require_once 'Services/Math/classes/class.EvalMath.php';

                $this->eval_math = new EvalMath();
        }

        public function testAdd($a, $b, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_add($a, $b, $scale));
        }

        public function testSub($a, $b, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_sub($a, $b, $scale));
        }

        public function testMul($a, $b, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_mul($a, $b, $scale));
        }

        public function testDiv($a, $b, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_div($a, $b, $scale));
        }

        public function testSqrt($a, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_sqrt($a, $scale));
        }

        public function testPow($a, $b, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_pow($a, $b, $scale));
        }

        public function testMod($a, $b, $result)
        {
                $this->assertEquals($result, ilMath::_mod($a, $b));
        }

        public function testEquals($a, $b, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_equals($a, $b, $scale));
        }

        public function testRound($a, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_round($a, $scale));
        }

        public function testGcd($a, $b, $result)
        {
                $this->assertEquals($result, ilMath::getGreatestCommonDivisor($a, $b));
        }

        public function testCalculation($formula, $result, $scale)
        {
                $this->assertEquals($result, ilMath::_round($this->eval_math->evaluate($formula), $scale));
        }

        /******************************************************************************************************************/

        public function addData()
        {
                return [
                        ['1', '2', '3', self::DEFAULT_SCALE]
                ];
        }

        public function subData()
        {
                return [
                        ['1', '2', '-1', self::DEFAULT_SCALE]
                ];
        }

        public function mulData()
        {
                return [
                        ['1', '2', '2', self::DEFAULT_SCALE]
                ];
        }

        public function divData()
        {
                return [
                        ['1', '2', '0.5', self::DEFAULT_SCALE]
                ];
        }

        public function modData()
        {
                return [
                        ['1', '2', '1']
                ];
        }
        
        public function sqrtData()
        {
                $values = [
                        ['9', '3', self::DEFAULT_SCALE],
                        ['4294967296', '65536', self::DEFAULT_SCALE]
                ];
                if(extension_loaded('bcmath')) 
                {
                        array_push($values, ['4294967296', '65536', self::DEFAULT_SCALE]);
                }
                return $values;
        }
        
        public function powData()
        {
                return [
                        ['3', '2', '9', self::DEFAULT_SCALE],
                        ['2', '64', '18446744073709551616', self::DEFAULT_SCALE]
                ];
        }
        
        public function equalsData()
        {
                return [
                        ['3', '3', true, self::DEFAULT_SCALE]
                ];
        }

        public function roundData()
        {
                return [
                        ['2.4742', '2.47', '2'],
                        ['2.4762', '2.48', '2']
                ];
        }
        
        public function gcdData()
        {
                return [
                        ['1254', '5298', '6'],
                        ['41414124', '41414124', '41414124']
                ];
        }

        public function calcData()
        {
                return [
                        ['3+5', '8', self::DEFAULT_SCALE],
                        ['-3+5', '2', self::DEFAULT_SCALE],
                        ['3*6+5', '23', self::DEFAULT_SCALE],
                        ['10/2', '5', self::DEFAULT_SCALE],
                        ['13/60', '0.2166666666667', '13'],
                        ['(-(-8)-sqrt((-8)^2-4*(7)))/(2)', '1', self::DEFAULT_SCALE],
                        ['(-(-8)+sqrt((-8)^2-4*(7)))/(2)', '7', self::DEFAULT_SCALE],
                        ['(-(-41)-sqrt((-41)^2-4*(1)*(5)))/(2*(1))', '0.122', '3'],
                        ['(-(-41)+sqrt((-41)^2-4*(1)*(5)))/(2*(1))', '40.878', '3'],
                        ['4^2-2*4+0.5*-16', '0', self::DEFAULT_SCALE],
                        ['-2^2-2*-2+0.5*-16', '-8', self::DEFAULT_SCALE]
                ];
        }
}