WP-LIT-MCP/tests/Unit/Integrations/WordPress/Render/PageRenderSummaryAbilityTest.php

<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\WordPress\Render;

use Brain\Monkey\Functions;
use LIT\MCP\Integrations\WordPress\Render\PageRenderer;
use LIT\MCP\Integrations\WordPress\Render\PageRenderSummaryAbility;
use LIT\MCP\Integrations\WordPress\Render\RenderSummary;
use LIT\MCP\Tests\Support\SchemaFixture;
use LIT\MCP\Tests\Unit\TestCase;
use Mockery;
use WP_Post;

final class PageRenderSummaryAbilityTest extends TestCase
{
    private const HTML = '<div class="et_pb_section"><h1>Willkommen</h1><h3>Leistungen</h3>'
        . '<p>Seit 1987 <a href="/kontakt">in Köln</a>.</p><ul><li>Beratung</li></ul>'
        . '<img src="https://k.test/a.jpg" alt="Team"><img src="https://k.test/b.jpg"><a href="#">Mehr</a></div>';

    public function testSummarizesHtml(): void
    {
        $summary = RenderSummary::fromHtml(self::HTML);

        self::assertSame([['level' => 1, 'text' => 'Willkommen'], ['level' => 3, 'text' => 'Leistungen']], $summary['headings']);
        self::assertSame(['Seit 1987 in Köln.', 'Beratung'], $summary['texts']);
        self::assertSame(['text' => 'in Köln', 'href' => '/kontakt'], $summary['links'][0]);
        self::assertSame(
            [['src' => 'https://k.test/a.jpg', 'alt' => 'Team'], ['src' => 'https://k.test/b.jpg', 'alt' => null]],
            $summary['images']
        );
        self::assertSame(
            [
                'Sprung in der Überschriftenhierarchie: h1 → h3 ("Leistungen").',
                'Bild ohne Alt-Text: https://k.test/b.jpg',
                'Link ohne Ziel: "Mehr".',
            ],
            $summary['warnings']
        );
        self::assertSame([], RenderSummary::fromHtml('')['headings']);
        self::assertCount(2, RenderSummary::fromHtml(str_repeat('<p>x</p>', 5), 2)['texts']);
    }

    public function testTruncatesLongExtractedStrings(): void
    {
        $longHeading = str_repeat('Ü', 250);
        $longText = str_repeat('a', 400);
        $longLinkText = str_repeat('b', 200);
        $longHref = 'https://k.test/' . str_repeat('c', 400);
        $longAlt = str_repeat('d', 300);
        $html = "<h2>{$longHeading}</h2><p>{$longText}</p>"
            . "<a href=\"{$longHref}\">{$longLinkText}</a>"
            . "<img src=\"https://k.test/x.jpg\" alt=\"{$longAlt}\">";

        $summary = RenderSummary::fromHtml($html);

        self::assertSame(200, mb_strlen($summary['headings'][0]['text']));
        self::assertStringEndsWith('…', $summary['headings'][0]['text']);
        self::assertSame(300, mb_strlen($summary['texts'][0]));
        self::assertStringEndsWith('…', $summary['texts'][0]);
        self::assertSame(150, mb_strlen($summary['links'][0]['text']));
        self::assertStringEndsWith('…', $summary['links'][0]['text']);
        self::assertSame(300, mb_strlen($summary['links'][0]['href']));
        self::assertStringEndsWith('…', $summary['links'][0]['href']);
        self::assertSame(200, mb_strlen($summary['images'][0]['alt']));
        self::assertStringEndsWith('…', $summary['images'][0]['alt']);
    }

    public function testRepresentsDataUrisAsAShortMarkerInsteadOfTruncatingThem(): void
    {
        $dataUri = 'data:image/png;base64,' . base64_encode(str_repeat('x', 5000));
        $html = '<img src="' . $dataUri . '"><a href="' . $dataUri . '">Anhang</a>';

        $summary = RenderSummary::fromHtml($html);

        $marker = 'data:image/png;… (' . strlen($dataUri) . ' Bytes)';
        self::assertSame($marker, $summary['images'][0]['src']);
        self::assertSame($marker, $summary['links'][0]['href']);
    }

    public function testPrefersDataSrcOrDataLazySrcOverAPlaceholderSrc(): void
    {
        $html = '<img src="data:image/gif;base64,R0lGODlhAQABAAAAACw=" data-src="https://k.test/real.jpg" alt="Team">'
            . '<img src="placeholder.gif" data-lazy-src="https://k.test/lazy.jpg">';

        $summary = RenderSummary::fromHtml($html);

        self::assertSame('https://k.test/real.jpg', $summary['images'][0]['src']);
        self::assertSame('https://k.test/lazy.jpg', $summary['images'][1]['src']);
    }

    public function testWarnsAboutMultipleH1Headings(): void
    {
        $summary = RenderSummary::fromHtml('<h1>Erste</h1><h1>Zweite</h1>');

        self::assertContains('2 Überschriften der Ebene h1 im Inhalt.', $summary['warnings']);
    }

    public function testDoesNotDuplicateTextFromNestedParagraphsListItemsOrBlockquotes(): void
    {
        $html = '<ul><li>Punkt <p>eingebettet</p></li></ul>'
            . '<blockquote>Zitat <blockquote>innen</blockquote></blockquote>';

        $summary = RenderSummary::fromHtml($html);

        self::assertSame(['Punkt eingebettet', 'Zitat innen'], $summary['texts']);
    }

    public function testIgnoresScriptStyleAndNoscriptText(): void
    {
        $html = '<p>Sichtbar<script>var x = 1;</script><style>.a{color:red}</style>'
            . '<noscript>Fallback</noscript> Ende</p>';

        $summary = RenderSummary::fromHtml($html);

        self::assertSame(['Sichtbar Ende'], $summary['texts']);
    }

    public function testRendersTheEntryAndAddsNotes(): void
    {
        $post = new WP_Post(['ID' => 7, 'post_type' => 'page', 'post_password' => 'geheim']);
        Functions\when('get_post')->justReturn($post);
        Functions\when('current_user_can')->justReturn(true);
        Functions\when('get_permalink')->justReturn('https://k.test/start/');
        $schema = SchemaFixture::managed();
        $renderer = Mockery::mock(PageRenderer::class);
        $renderer->expects('render')->with($post)->andReturn(self::HTML);
        $ability = new PageRenderSummaryAbility($schema, $renderer);

        self::assertTrue($ability->permission(['post_id' => 7]));
        $result = $ability->execute(['post_id' => 7]);

        self::assertSame(7, $result['post_id']);
        self::assertSame('https://k.test/start/', $result['url']);
        self::assertCount(2, $result['headings']);
        self::assertCount(3, $result['notes']);
        self::assertTrue($ability->isDirect());
        self::assertTrue($ability->annotations()['readonly']);
    }
}