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<?php
/**
* This file is part of the MathExecutor package
*
* (c) Alexander Kiryukhin
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code
*/
namespace NXP\Tests;
use NXP\MathExecutor;
use NXP\Exception\DivisionByZeroException;
use NXP\Exception\IncorrectBracketsException;
use NXP\Exception\IncorrectExpressionException;
use NXP\Exception\MathExecutorException;
use NXP\Exception\UnknownFunctionException;
use NXP\Exception\UnknownOperatorException;
use NXP\Exception\UnknownTokenException;
use NXP\Exception\UnknownVariableException;
class MathTest extends \PHPUnit_Framework_TestCase
{
/**
* @dataProvider providerExpressions
*/
public function testCalculating($expression)
{
$calculator = new MathExecutor();
/** @var float $phpResult */
eval('$phpResult = ' . $expression . ';');
$this->assertEquals($phpResult, $calculator->execute($expression), "Expression was: ${expression}");
}
/**
* Expressions data provider
*/
public function providerExpressions()
{
return [
['0.1 + 0.2'],
['1 + 2'],
['0.1 - 0.2'],
['1 - 2'],
['0.1 * 2'],
['1 * 2'],
['0.1 / 0.2'],
['1 / 2'],
['2 * 2 + 3 * 3'],
['1 + 0.6 - 3 * 2 / 50'],
['(5 + 3) * -1'],
['2- 2*2'],
['2-(2*2)'],
['(2- 2)*2'],
['2 + 2*2'],
['2+ 2*2'],
['2+2*2'],
['(2+2)*2'],
['(2 + 2)*-2'],
['(2+-2)*2'],
['1 + 2 * 3 / (min(1, 5) + 2 + 1)'],
['1 + 2 * 3 / (min(1, 5) - 2 + 5)'],
['1 + 2 * 3 / (min(1, 5) * 2 + 1)'],
['1 + 2 * 3 / (min(1, 5) / 2 + 1)'],
['1 + 2 * 3 / (min(1, 5) / 2 * 1)'],
['1 + 2 * 3 / (min(1, 5) / 2 / 1)'],
['1 + 2 * 3 / (3 + min(1, 5) + 2 + 1)'],
['1 + 2 * 3 / (3 - min(1, 5) - 2 + 1)'],
['1 + 2 * 3 / (3 * min(1, 5) * 2 + 1)'],
['1 + 2 * 3 / (3 / min(1, 5) / 2 + 1)'],
['sin(10) * cos(50) / min(10, 20/2)'],
['sin(10) * cos(50) / min(10, (20/2))'],
['sin(10) * cos(50) / min(10, (max(10,20)/2))'],
['100500 * 3.5E5'],
['100500 * 3.5E-5'],
['1 + "2" / 3'],
["1.5 + '2.5' / 4"],
['1.5 + "2.5" * ".5"'],
['-1 + -2'],
['-1+-2'],
['-1- -2'],
['-1/-2'],
['-1*-2'],
];
}
public function testUnknownFunctionException()
{
$calculator = new MathExecutor();
$this->expectException(UnknownFunctionException::class);
$calculator->execute('1 * fred("wilma") + 3');
}
public function testIncorrectExpressionException()
{
$calculator = new MathExecutor();
$this->expectException(IncorrectExpressionException::class);
$calculator->execute('1 * + ');
}
public function testZeroDivision()
{
$calculator = new MathExecutor();
$this->assertEquals(0, $calculator->execute('10 / 0'));
}
public function testZeroDivisionException()
{
$calculator = new MathExecutor();
$calculator->setDivisionByZeroException();
$this->expectException(DivisionByZeroException::class);
$calculator->execute('10 / 0');
}
public function testExponentiation()
{
$calculator = new MathExecutor();
$this->assertEquals(100, $calculator->execute('10 ^ 2'));
}
public function testFunctionParameterOrder()
{
$calculator = new MathExecutor();
$calculator->addFunction('concat', function ($arg1, $arg2) {return $arg1.$arg2;});
$this->assertEquals('testing', $calculator->execute('concat("test","ing")'));
$this->assertEquals('testing', $calculator->execute("concat('test','ing')"));
}
public function testFunction()
{
$calculator = new MathExecutor();
$calculator->addFunction('round', function ($arg) {return round($arg);});
/** @var float $phpResult */
eval('$phpResult = round(100/30);');
$this->assertEquals($phpResult, $calculator->execute('round(100/30)'));
}
public function testQuotes()
{
$calculator = new MathExecutor();
$testString = "some, long. arg; with: different-separators!";
$calculator->addFunction('test', function ($arg) use ($testString) {
$this->assertEquals($testString, $arg);
return 0;}
);
$calculator->execute('test("' . $testString . '")'); // single quotes
$calculator->execute("test('" . $testString . "')"); // double quotes
}
}
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