<?php
/**
 * Orange Management
 *
 * PHP Version 7.4
 *
 * @package   tests
 * @copyright Dennis Eichhorn
 * @license   OMS License 1.0
 * @version   1.0.0
 * @link      https://orange-management.org
 */
declare(strict_types=1);

namespace phpOMS\tests\Stdlib\Graph;

use phpOMS\Stdlib\Graph\Edge;
use phpOMS\Stdlib\Graph\Node;

/**
 * @testdox phpOMS\tests\Stdlib\Graph\EdgeTest: Edge between nodes
 *
 * @internal
 */
class EdgeTest extends \PHPUnit\Framework\TestCase
{
    /**
     * @testdox The edge has the expected default values after initialization
     * @covers phpOMS\Stdlib\Graph\Edge
     * @group framework
     */
    public function testDefault() : void
    {
        $edge = new Edge(new Node('1'), new Node('2'));
        self::assertEquals([new Node('1'), new Node('2')], $edge->getNodes());
        self::assertTrue($edge->getNode1()->isEqual(new Node('1')));
        self::assertTrue($edge->getNode2()->isEqual(new Node('2')));
        self::assertEquals(0.0, $edge->getWeight());
        self::assertFalse($edge->isDirected());
    }

    /**
     * @testdox An edge can be directed
     * @covers phpOMS\Stdlib\Graph\Edge
     * @group framework
     */
    public function testDirected() : void
    {
        $edge = new Edge(new Node('7'), new Node('8'), 1.0, true);
        self::assertTrue($edge->isDirected());
    }

    /**
     * @testdox An edge can have a weight
     * @covers phpOMS\Stdlib\Graph\Edge
     * @group framework
     */
    public function testWeight() : void
    {
        $edge = new Edge(new Node('7'), new Node('8'), 1.0, true);
        self::assertEquals(1.0, $edge->getWeight());
    }
}