HtmlMetadataTest.php

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<?php

declare(strict_types=1);

use PHPUnit\Framework\TestCase;
use ILIAS\Data\Meta\Html\Factory;
use ILIAS\Data\Meta\Html\TagCollection;
use ILIAS\Data\Meta\Html\UserDefined;
use ILIAS\Data\Meta\Html\NullTag;
use ILIAS\Data\Meta\Html\Tag;

class HtmlMetadataTest extends TestCase
{
    protected Factory $factory;

    protected function setUp(): void
    {
        $this->factory = new Factory();
    }

    public function testNullTag(): void
    {
        $null_tag = $this->factory->nullTag();

        $this->assertInstanceOf(NullTag::class, $null_tag);
        $this->assertEmpty($null_tag->toHtml());
    }

    public function testTagCollection(): void
    {
        $test_tag_1_html = 'test_tag_1_html';
        $test_tag_1 = $this->getMockedTag($test_tag_1_html);

        $test_tag_2_html = 'test_tag_2_html';
        $test_tag_2 = $this->getMockedTag($test_tag_2_html);

        $expected_html = $test_tag_1_html . PHP_EOL . $test_tag_2_html . PHP_EOL;

        $tag_collection = $this->factory->collection([$test_tag_1, $test_tag_2]);

        $this->assertCount(2, iterator_to_array($tag_collection->getTags()));
        $this->assertEquals($expected_html, $tag_collection->toHtml());
    }

    public function testEmptyTagCollection(): void
    {
        $tag_collection = $this->factory->collection([]);

        $this->assertEmpty(iterator_to_array($tag_collection->getTags()));
        $this->assertEmpty($tag_collection->toHtml());
    }

    public function testNestedTagCollection(): void
    {
        $test_tag_1_html = 'test_tag_1_html';
        $test_tag_1 = $this->getMockedTag($test_tag_1_html);

        $test_tag_2_html = 'test_tag_2_html';
        $test_tag_2 = $this->getMockedTag($test_tag_2_html);

        $test_tag_3_html = 'test_tag_3_html';
        $test_tag_3 = $this->getMockedTag($test_tag_3_html);

        $expected_html = $test_tag_1_html . PHP_EOL . $test_tag_2_html . PHP_EOL . $test_tag_3_html . PHP_EOL;

        $tag_collection = $this->factory->collection([
            $this->factory->collection([$test_tag_1, $test_tag_2]),
            $test_tag_3,
        ]);

        $this->assertCount(3, iterator_to_array($tag_collection->getTags()));
        $this->assertEquals($expected_html, $tag_collection->toHtml());
    }

    public function testUserDefinedTag(): void
    {
        $key = 'expected_key';
        $val = 'expected_value';

        $user_defined_tag = $this->factory->userDefined($key, $val);

        $this->assertInstanceOf(UserDefined::class, $user_defined_tag);
        $this->assertEquals(
            "<meta name=\"$key\" content=\"$val\" />",
            $user_defined_tag->toHtml()
        );
    }

    public function getMockedTag(string $html): Tag
    {
        return new class ($html) extends Tag {
            public function __construct(
                protected string $html
            ) {
            }

            public function toHtml(): string
            {
                return $this->html;
            }
        };
    }
}