Fix dependency injected in CrawlingHelper

CHANGELOG.md

@@ -4,6 +4,23 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com), and this project adheres to [Semantic Versioning](https://semver.org).
 
+## [Unreleased]
+### Added
+* *Nothing*
+
+### Changed
+* *Nothing*
+
+### Deprecated
+* *Nothing*
+
+### Removed
+* *Nothing*
+
+### Fixed
+* [#1698](https://github.com/shlinkio/shlink/issues/1698) Fixed error 500 in `robots.txt`.
+
+
 ## [3.5.1] - 2023-02-04
 ### Added
 * *Nothing*

module/Core/config/dependencies.config.php

@@ -187,7 +187,7 @@ return [
             Util\DoctrineBatchHelper::class,
         ],
 
-        Crawling\CrawlingHelper::class => ['em'],
+        Crawling\CrawlingHelper::class => [ShortUrl\Repository\CrawlableShortCodesQuery::class],
     ],
 
 ];

module/Core/test-api/Action/RobotsTest.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ShlinkioApiTest\Shlink\Core\Action;
+
+use Shlinkio\Shlink\TestUtils\ApiTest\ApiTestCase;
+
+class RobotsTest extends ApiTestCase
+{
+    /** @test */
+    public function expectedListOfCrawlableShortCodesIsReturned(): void
+    {
+        $resp = $this->callShortUrl('robots.txt');
+        $body = $resp->getBody()->__toString();
+
+        self::assertEquals(200, $resp->getStatusCode());
+        self::assertEquals(
+            <<<ROBOTS
+            # For more information about the robots.txt standard, see:
+            # https://www.robotstxt.org/orig.html
+            
+            User-agent: *
+            Allow: /custom
+            Allow: /abc123
+            Disallow: /
+            ROBOTS,
+            $body,
+        );
+    }
+}

module/Rest/test-api/Action/ListShortUrlsTest.php

@@ -122,7 +122,7 @@ class ListShortUrlsTest extends ApiTestCase
         ],
         'domain' => null,
         'title' => null,
-        'crawlable' => false,
+        'crawlable' => true,
         'forwardQuery' => false,
     ];
     private const SHORT_URL_CUSTOM_DOMAIN = [

module/Rest/test-api/Fixtures/ShortUrlsFixture.php

@@ -62,6 +62,7 @@ class ShortUrlsFixture extends AbstractFixture implements DependentFixtureInterf
             'maxVisits' => 2,
             'apiKey' => $authorApiKey,
             'longUrl' => 'https://shlink.io',
+            'crawlable' => true,
             'forwardQuery' => false,
         ])), '2019-01-01 00:00:20');
         $manager->persist($customShortUrl);