[TASK] Use MockWebServer in tests

The MockWebServer provides the possibility to test
individual scenarios like robots.txt and gzipped files.

Closes #14
Closes #15

Tests/Functional/Fixtures/robots.txt

@@ -0,0 +1,7 @@
+User-agent: *
+Allow: /
+
+Sitemap: http://127.0.0.1:1337/sitemap-1.xml
+Sitemap: http://127.0.0.1:1337/sitemap-2.xml
+Sitemap: http://127.0.0.1:1337/sitemap-index-1.xml
+Sitemap: http://127.0.0.1:1337/sitemap-index-2.xml

Tests/Functional/Fixtures/sitemap-1.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="/typo3/sysext/seo/Resources/Public/CSS/Sitemap.xsl"?>
+
+<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd http://www.google.com/schemas/sitemap-image/1.1 http://www.google.com/schemas/sitemap-image/1.1/sitemap-image.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+
+  <url>
+    <loc>http://127.0.0.1:1337/</loc>
+    <lastmod>2020-06-12T11:49:26+02:00</lastmod>
+  </url>
+
+</urlset>

Tests/Functional/Fixtures/sitemap-2.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="/typo3/sysext/seo/Resources/Public/CSS/Sitemap.xsl"?>
+
+<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd http://www.google.com/schemas/sitemap-image/1.1 http://www.google.com/schemas/sitemap-image/1.1/sitemap-image.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+
+  <url>
+    <loc>http://127.0.0.1:1337/</loc>
+    <lastmod>2020-06-12T11:49:26+02:00</lastmod>
+  </url>
+
+  <url>
+    <loc>http://127.0.0.1:1337/page</loc>
+    <lastmod>2020-06-12T11:49:26+02:00</lastmod>
+  </url>
+
+</urlset>

Tests/Functional/Fixtures/sitemap-index-1.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="/typo3/sysext/seo/Resources/Public/CSS/Sitemap.xsl"?>
+
+<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+
+  <sitemap>
+    <loc>http://127.0.0.1:1337/sitemap-1.xml</loc>
+    <lastmod>2020-06-30T10:36:11+02:00</lastmod>
+  </sitemap>
+
+</sitemapindex>

Tests/Functional/Fixtures/sitemap-index-2.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="/typo3/sysext/seo/Resources/Public/CSS/Sitemap.xsl"?>
+
+<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+
+  <sitemap>
+    <loc>http://127.0.0.1:1337/sitemap-1.xml</loc>
+    <lastmod>2020-06-30T10:36:11+02:00</lastmod>
+  </sitemap>
+
+  <sitemap>
+    <loc>http://127.0.0.1:1337/sitemap-2.xml</loc>
+    <lastmod>2019-09-04T14:54:32+02:00</lastmod>
+  </sitemap>
+
+</sitemapindex>

Tests/Functional/Fixtures/sitemap-index-gz.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="/typo3/sysext/seo/Resources/Public/CSS/Sitemap.xsl"?>
+
+<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+
+  <sitemap>
+    <loc>http://127.0.0.1:1337/sitemap-2.xml.gz</loc>
+    <lastmod>2020-06-30T10:36:11+02:00</lastmod>
+  </sitemap>
+
+</sitemapindex>

composer.json

@@ -11,17 +11,18 @@
     }
   ],
   "require": {
-    "typo3/cms-core": "^12.4 || ^v13.0",
+    "php": "^8.1",
     "ext-simplexml": "*",
     "ext-zlib": "*",
-    "php": "^8.1"
+    "typo3/cms-core": "^12.4 || ^v13.0"
   },
   "require-dev": {
+    "donatj/mock-webserver": "^2.7",
     "friendsofphp/php-cs-fixer": "^3.0",
     "php-parallel-lint/php-parallel-lint": "^1.2",
+    "saschaegerer/phpstan-typo3": "dev-master",
     "typo3/cms-composer-installers": "^5.0",
-    "typo3/testing-framework": "^8.0",
-    "saschaegerer/phpstan-typo3": "dev-master"
+    "typo3/testing-framework": "^8.0"
   },
   "autoload": {
     "psr-4": {
@@ -38,9 +39,9 @@
     "bin-dir": ".Build/bin",
     "allow-plugins": {
       "typo3/class-alias-loader": true,
-      "typo3/cms-composer-installers": true,
-      "sbuerk/typo3-cmscomposerinstallers-testingframework-bridge": true
-    }
+      "typo3/cms-composer-installers": true
+    },
+    "sort-packages": true
   },
   "scripts": {
     "test": [