php-ml/tests/Phpml/Math/ProductTest.php

<?php
declare(strict_types = 1);

namespace tests\Phpml\Math;

use Phpml\Math\Product;

class ProductTest extends \PHPUnit_Framework_TestCase
{

    public function testScalarProduct()
    {
        $this->assertEquals(10, Product::scalar([2, 3], [-1, 4]));
        $this->assertEquals(-0.1, Product::scalar([1, 4, 1], [-2, 0.5, -0.1]));
        $this->assertEquals(8, Product::scalar([2], [4]));
    }

}