ilCollectionTest.php

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<?php

declare(strict_types=1);

namespace ILIAS\Export\Test\ImportHandler\Parser\NodeInfo;

use ILIAS\Export\ImportHandler\Parser\NodeInfo\DOM\Handler;
use ILIAS\Export\ImportHandler\Parser\NodeInfo\Collection;
use PHPUnit\Framework\TestCase;

class ilCollectionTest extends TestCase
{
    public function testNodeInfoCollection(): void
    {
        $node1 = $this->createMock(Handler::class);
        $node2 = $this->createMock(Handler::class);
        $node3 = $this->createMock(Handler::class);

        $collection = new Collection();
        $collection = $collection->withElement($node1);
        $collection = $collection->withElement($node2);
        $collection = $collection->withElement($node3);

        $collection2 = $collection->removeFirst();
        $collection3 = $collection2->removeFirst();
        $collection4 = $collection3->removeFirst();

        $this->assertEquals($node1, $collection->getFirst());
        $this->assertEquals($node2, $collection2->getFirst());
        $this->assertEquals($node3, $collection3->getFirst());

        $this->assertCount(3, $collection);
        $this->assertCount(2, $collection2);
        $this->assertCount(1, $collection3);
        $this->assertCount(0, $collection4);
    }
}