diff --git a/.github/workflows/lint_test_pull_requests.yaml b/.github/workflows/lint_test_pull_requests.yaml
index ba7034b8..3bdb25da 100644
--- a/.github/workflows/lint_test_pull_requests.yaml
+++ b/.github/workflows/lint_test_pull_requests.yaml
@@ -46,3 +46,20 @@ jobs:
           container_workdir: /app/${{ matrix.directory }}
           command: ${{ matrix.composer-command.command }}
           memory_limit: 512M
+
+  tests:
+    runs-on: ubuntu-latest
+    name: End to end tests
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.2'
+
+      - name: Run tests
+        working-directory: tests
+        run: ./run-test.sh
\ No newline at end of file
diff --git a/tests/.gitignore b/tests/.gitignore
new file mode 100644
index 00000000..8d152d48
--- /dev/null
+++ b/tests/.gitignore
@@ -0,0 +1,4 @@
+/composer.lock
+/vendor/
+
+/*/output/
\ No newline at end of file
diff --git a/tests/composer.json b/tests/composer.json
new file mode 100644
index 00000000..bf6b7cf7
--- /dev/null
+++ b/tests/composer.json
@@ -0,0 +1,25 @@
+{
+  "name": "a9f/fractor-tests-typo3-flexform",
+  "type": "project",
+  "require": {
+    "a9f/fractor": "@dev",
+    "a9f/fractor-extension-installer": "@dev",
+    "a9f/fractor-xml": "@dev",
+    "a9f/typo3-fractor": "@dev"
+  },
+  "require-dev": {
+    "ergebnis/composer-normalize": "^2.42"
+  },
+  "repositories": {
+    "fractor": {
+      "type": "path",
+      "url": "../*"
+    }
+  },
+  "config": {
+    "allow-plugins": {
+      "a9f/fractor-extension-installer": true,
+      "ergebnis/composer-normalize": true
+    }
+  }
+}
diff --git a/tests/run-test.sh b/tests/run-test.sh
new file mode 100755
index 00000000..6fbdf159
--- /dev/null
+++ b/tests/run-test.sh
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -x
+
+TESTS_BASE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd)"
+BASE_DIR="$TESTS_BASE_DIR/../"
+
+cd $TESTS_BASE_DIR
+
+rm -r composer.lock vendor || true
+composer install
+
+TEST_DIR=typo3-flexform
+
+cd $TEST_DIR
+
+[[ -d ./output/ ]] && rm -rf ./output/
+cp -r fixtures/ output/
+
+cd $TESTS_BASE_DIR
+./vendor/bin/fractor process -c $TESTS_BASE_DIR/$TEST_DIR/fractor.php
+
+# TODO remove -b once we keep the output format when re-writing the file
+diff -rub $TEST_DIR/expected-output/ $TEST_DIR/output/
diff --git a/tests/typo3-flexform/expected-output/FlexFormWithSelect.xml b/tests/typo3-flexform/expected-output/FlexFormWithSelect.xml
new file mode 100644
index 00000000..d441be59
--- /dev/null
+++ b/tests/typo3-flexform/expected-output/FlexFormWithSelect.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<T3DataStructure>
+    <sheets>
+        <sDEF>
+            <ROOT>
+                <type>array</type>
+                <el>
+                    <foo>
+                        <config>
+                            <type>select</type>
+                            <renderType>selectSingle</renderType>
+                        </config>
+                    </foo>
+                </el>
+            </ROOT>
+        </sDEF>
+    </sheets>
+</T3DataStructure>
diff --git a/tests/typo3-flexform/fixtures/FlexFormWithSelect.xml b/tests/typo3-flexform/fixtures/FlexFormWithSelect.xml
new file mode 100644
index 00000000..fb071d8d
--- /dev/null
+++ b/tests/typo3-flexform/fixtures/FlexFormWithSelect.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<T3DataStructure>
+    <sheets>
+        <sDEF>
+            <ROOT>
+                <type>array</type>
+                <el>
+                    <foo>
+                        <config>
+                            <type>select</type>
+                            <maxitems>1</maxitems>
+                        </config>
+                    </foo>
+                </el>
+            </ROOT>
+        </sDEF>
+    </sheets>
+</T3DataStructure>
\ No newline at end of file
diff --git a/tests/typo3-flexform/fractor.php b/tests/typo3-flexform/fractor.php
new file mode 100644
index 00000000..126c6ea8
--- /dev/null
+++ b/tests/typo3-flexform/fractor.php
@@ -0,0 +1,19 @@
+<?php
+
+use a9f\Fractor\Configuration\FractorConfig;
+use a9f\Fractor\Fractor\DummyRule;
+use a9f\FractorXml\XmlFileProcessor;
+use a9f\Typo3Fractor\Rules\FlexForm\AddRenderTypeToFlexFormFractor;
+
+return static function (FractorConfig $config) {
+    $config->import(__DIR__ . '/../vendor/a9f/fractor-xml/config/fractor.php');
+
+    $config->setPaths([
+        __DIR__ . '/output/',
+    ]);
+
+    $config->withFileProcessor(XmlFileProcessor::class);
+
+    $config->withRule(AddRenderTypeToFlexFormFractor::class);
+    $config->withRule(DummyRule::class);
+};