WP-LIT-MCP/tests/Unit/Integrations/Divi/Library/UsageMatcherTest.php

<?php

declare(strict_types=1);

namespace LIT\MCP\Tests\Unit\Integrations\Divi\Library;

use LIT\MCP\Integrations\Divi\Library\UsageMatcher;
use PHPUnit\Framework\TestCase;

/**
 * Ruling P23 (re-review F1): every reference Divi renders counts – Divi 5 openers in any JSON
 * spelling, Divi 4 shortcodes in any quoting; an escaped opener that cannot be decoded counts as a
 * possible reference (fail closed). Escape bytes are built with chr(92), never written inline.
 */
final class UsageMatcherTest extends TestCase
{
    private static function u(string $hex): string
    {
        return chr(92) . 'u' . $hex;
    }

    /** @return array<string, array{string, bool}> Content => whether it shows entry 123. */
    public static function contents(): array
    {
        $escapedKey = '"' . self::u('0067') . 'lobalModule"';

        return [
            'divi 5 canonical' => ['<!-- wp:divi/global-layout {"globalModule":"123","blockName":"divi/text"} /-->', true],
            'divi 5 leading zeros' => ['<!-- wp:divi/global-layout {"globalModule":"0123","blockName":"divi/text"} /-->', true],
            'divi 5 escaped key' => ['<!-- wp:divi/global-layout {' . $escapedKey . ':"123","blockName":"divi/text"} /-->', true],
            'divi 5 escaped value' => [
                '<!-- wp:divi/global-layout {"globalModule":"' . self::u('0031') . '23","blockName":"divi/text"} /-->',
                true,
            ],
            'divi 5 escaped key with leading zeros' => [
                '<!-- wp:divi/global-layout {' . $escapedKey . ':"00123"} /-->',
                true,
            ],
            'divi 5 another entry' => ['<!-- wp:divi/global-layout {"globalModule":"1234","blockName":"divi/text"} /-->', false],
            'divi 5 escaped key, another entry' => ['<!-- wp:divi/global-layout {' . $escapedKey . ':"124"} /-->', false],
            'divi 5 id in local attributes' => [
                '<!-- wp:divi/global-layout {"globalModule":"5","localAttrs":{"x":{"globalModule":"123"}}} /-->',
                true,
            ],
            'divi 4 double quotes' => ['[et_pb_section global_module="123"][/et_pb_section]', true],
            'divi 4 single quotes and zeros' => ["[et_pb_text global_module='0123']x[/et_pb_text]", true],
            'divi 4 unquoted' => ['[et_pb_row global_module=123 admin_label="x"][/et_pb_row]', true],
            'divi 4 typographic quotes' => ['[et_pb_row global_module=' . "\u{201D}" . '123' . "\u{201D}" . '][/et_pb_row]', true],
            'divi 4 another entry' => ['[et_pb_section global_module="1230"][/et_pb_section]', false],
            'undecodable escaped opener' => [
                '<!-- wp:divi/global-layout {' . $escapedKey . ':"123",} /-->',
                true,
            ],
            'undecodable escaped opener naming nothing readable' => [
                '<!-- wp:divi/text {' . self::u('0067') . 'kaputt} /-->',
                true,
            ],
            'escaped markup only' => [
                '<!-- wp:divi/text {"content":{"innerContent":{"desktop":{"value":"' . self::u('003c') . 'p'
                    . self::u('003e') . 'x"}}}} /-->',
                false,
            ],
            'plain page' => ['<!-- wp:divi/section --><!-- /wp:divi/section -->', false],
            // Ruling P24 G1: a Divi 4 shortcode inside a Divi 5 attribute value (quotes serialized as escapes).
            'shortcode in a divi 5 text value' => [self::inText('[et_pb_section global_module=' . self::u('0022') . '123'
                . self::u('0022') . '][/et_pb_section]'), true],
            'shortcode in a divi 5 text value, another entry' => [self::inText('[et_pb_section global_module='
                . self::u('0022') . '124' . self::u('0022') . '][/et_pb_section]'), false],
            'shortcode in a divi 5 text value, escaped digits' => [self::inText('[et_pb_section global_module='
                . self::u('0022') . self::u('0031') . self::u('0032') . '3' . self::u('0022') . '][/et_pb_section]'), true],
            // G2: parsed like shortcode_parse_atts, cast with (int) like Divi.
            'divi 4 leading space' => ['[et_pb_section global_module=" 123"][/et_pb_section]', true],
            'divi 4 exponent' => ['[et_pb_section global_module="1.23e2"][/et_pb_section]', true],
            'divi 4 upper-case attribute' => ['[et_pb_section GLOBAL_MODULE="123"][/et_pb_section]', true],
            'divi 4 zero renders nothing' => ['[et_pb_section global_module="0"][/et_pb_section]', false],
            'divi 4 empty renders nothing' => ['[et_pb_section global_module=""][/et_pb_section]', false],
            'global_module as plain text' => ['<p>global_module="123" steht hier nur als Text</p>', false],
        ];
    }

    /** A Divi 5 text module whose content value holds $text, JSON-encoded like WordPress does. */
    private static function inText(string $text): string
    {
        return '<!-- wp:divi/text {"content":{"innerContent":{"desktop":{"value":"' . $text . '"}}}} /-->';
    }

    /**
     * Ruling P24 G3: a global_module Divi casts to 0 renders the newest library or TB layout
     * (et_pb_load_global_module, WP_Query p=0) – a reference to every entry.
     *
     * @return array<string, array{string}>
     */
    public static function wildcards(): array
    {
        return [
            'entity before the id' => ['[et_pb_section global_module="&quot;123"][/et_pb_section]'],
            'letters' => ['[et_pb_row global_module="abc"][/et_pb_row]'],
            'typographic quotes' => ['[et_pb_row global_module=' . "\u{201D}" . '123' . "\u{201D}" . '][/et_pb_row]'],
            'double zero' => ['[et_pb_row global_module="00"][/et_pb_row]'],
            'inside a divi 5 value' => [self::inText('[et_pb_text global_module=' . self::u('0022') . 'x'
                . self::u('0022') . ']a[/et_pb_text]')],
        ];
    }

    /** @dataProvider wildcards */
    public function testAValueThatCastsToZeroShowsEveryEntry(string $content): void
    {
        self::assertTrue(UsageMatcher::shows($content, 123));
        self::assertTrue(UsageMatcher::shows($content, 98765));
    }

    /** @dataProvider contents */
    public function testFindsEveryReferenceDiviRenders(string $content, bool $shows): void
    {
        self::assertSame($shows, UsageMatcher::shows($content, 123));
    }

    public function testTheEscapeBytesAreReal(): void
    {
        self::assertSame(6, strlen(self::u('0067')));
        self::assertSame(92, ord(self::u('0067')[0]));
    }
}