for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
use Litipk\BigNumbers\Decimal as Decimal;
use PHPUnit\Framework\TestCase;
date_default_timezone_set('UTC');
class DecimalMulTest extends TestCase
{
public function testZeroFiniteMul()
$z = Decimal::fromInteger(0);
$n = Decimal::fromInteger(5);
$r1 = $z->mul($n);
$r2 = $n->mul($z);
$this->assertTrue($r1->equals($r2));
$this->assertTrue($r2->equals($r1));
$this->assertTrue($r1->isZero());
$this->assertTrue($r2->isZero());
}
public function testSignsMul()
$n1 = Decimal::fromInteger(1);
$n2 = Decimal::fromInteger(-1);
$n11 = $n1->mul($n1);
$n12 = $n1->mul($n2);
$n21 = $n2->mul($n1);
$this->assertTrue($n1->equals($n11));
$this->assertTrue($n11->equals($n1));
$this->assertTrue($n11->isPositive());
$this->assertFalse($n11->isNegative());
$this->assertTrue($n12->equals($n21));
$this->assertTrue($n21->equals($n12));
$this->assertTrue($n12->isNegative());
$this->assertTrue($n21->isNegative());
$this->assertFalse($n12->isPositive());
$this->assertFalse($n21->isPositive());
Litipk /
php-bignumbers
