diff --git a/.github/workflows/dispatch_module.yml b/.github/workflows/dispatch_module.yml
index 62f281e..e6a983c 100644
--- a/.github/workflows/dispatch_module.yml
+++ b/.github/workflows/dispatch_module.yml
@@ -8,7 +8,7 @@ on:
         type: string
         required: true
         description: 'URL/PATH of the testplan to run'
-        default: 'tests/github_actions/defaults/7.0.x.yml,tests/github_actions/twig-component.yml'
+        default: 'tests/github_actions/defaults/defaults.yml,tests/github_actions/twig-component.yml'
       runs_on:
         type: string
         description: 'JSON string/array describing the runner'
diff --git a/.github/workflows/pull_module_7.0x.yml b/.github/workflows/pull_module_7.0x.yml
index 40f6833..3ad6334 100644
--- a/.github/workflows/pull_module_7.0x.yml
+++ b/.github/workflows/pull_module_7.0x.yml
@@ -9,7 +9,7 @@ jobs:
   pull_module:
     uses: oxid-eSales/github-actions/.github/workflows/call-universal_test_workflow.yml@v3
     with:
-      testplan: 'tests/github_actions/defaults/7.0.x.yml,tests/github_actions/twig-component.yml'
+      testplan: 'tests/github_actions/defaults/7.0.x.yml,tests/github_actions/twig-component.yml','test/github_actions/defaults/defaults.yml'
       runs_on: '["self-hosted", "x64"]'
       defaults: 'v3'
     secrets:
diff --git a/.github/workflows/pull_module_8.0x.yml b/.github/workflows/pull_module_8.0x.yml
index 177fe3c..0db0ce4 100644
--- a/.github/workflows/pull_module_8.0x.yml
+++ b/.github/workflows/pull_module_8.0x.yml
@@ -9,7 +9,7 @@ jobs:
   pull_module:
     uses: oxid-eSales/github-actions/.github/workflows/call-universal_test_workflow.yml@v3
     with:
-      testplan: 'tests/github_actions/defaults/8.0.x.yml,tests/github_actions/twig-component.yml'
+      testplan: 'tests/github_actions/twig-component.yml,test/github_actions/defaults/defaults.yml'
       runs_on: '["self-hosted", "x64"]'
       defaults: 'v3'
     secrets:
diff --git a/tests/phpcs.xml b/tests/phpcs.xml
new file mode 100644
index 0000000..326365c
--- /dev/null
+++ b/tests/phpcs.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0"?>
+<ruleset name="Oxid Coding Standard">
+    <description>Oxid Coding Standard</description>
+
+    <!-- Paths to check -->
+    <file>../src/</file>
+    <file>./</file>
+    <!--
+    <file>../translations</file>
+    -->
+    <file>../migration</file>
+    <exclude-pattern>./tests/Codeception/Config</exclude-pattern>
+
+    <!-- display progress -->
+    <arg value="p"/>
+    <arg name="colors"/>
+    <arg name="extensions" value="php,dist,phtml"/>
+
+    <!-- inherit rules from: -->
+    <rule ref="PSR12"/>
+
+    <rule ref="Generic.Arrays.DisallowLongArraySyntax"/>
+    <rule ref="Squiz.WhiteSpace.OperatorSpacing">
+        <properties>
+            <property name="ignoreNewlines" value="true"/>
+        </properties>
+    </rule>
+
+    <!-- ignore method declaration rules for tests -->
+    <rule ref="PSR2.Methods.MethodDeclaration">
+        <exclude-pattern>./</exclude-pattern>
+    </rule>
+
+    <!-- ignore property declaration rules for tests -->
+    <rule ref="PSR2.Classes.PropertyDeclaration">
+        <exclude-pattern>./</exclude-pattern>
+    </rule>
+</ruleset>
diff --git a/tests/phpunit.xml b/tests/phpunit.xml
new file mode 100644
index 0000000..36af30f
--- /dev/null
+++ b/tests/phpunit.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.4/phpunit.xsd" beStrictAboutOutputDuringTests="false" cacheDirectory=".phpunit.cache" requireCoverageMetadata="false" beStrictAboutCoverageMetadata="true">
+  <coverage/>
+  <testsuites>
+    <testsuite name="Unit">
+      <directory suffix="Test.php">tests/Unit</directory>
+    </testsuite>
+    <testsuite name="Integration">
+      <directory suffix="Test.php">tests/Integration</directory>
+    </testsuite>
+  </testsuites>
+  <source>
+    <include>
+      <directory suffix=".php">../src/</directory>
+    </include>
+  </source>
+</phpunit>