diff --git a/composer.json b/composer.json
index fe89f1a..4bb7262 100644
--- a/composer.json
+++ b/composer.json
@@ -50,7 +50,8 @@
         "psr-4": {
             "Inpsyde\\CodingStandard\\Tests\\": [
                 "tests/src/",
-                "tests/cases/"
+                "tests/cases/",
+                "tests/e2e/"
             ]
         }
     },
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 826c5fa..0be95d0 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -16,5 +16,8 @@
         <testsuite name="helpers">
             <directory>tests/cases/Helpers</directory>
         </testsuite>
+        <testsuite name="e2e">
+            <directory>tests/e2e/E2eTest.php</directory>
+        </testsuite>
     </testsuites>
 </phpunit>
diff --git a/tests/e2e/E2eTest.php b/tests/e2e/E2eTest.php
new file mode 100644
index 0000000..9c1d8b5
--- /dev/null
+++ b/tests/e2e/E2eTest.php
@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Inpsyde\CodingStandard\Tests;
+
+use RuntimeException;
+
+class E2eTest extends TestCase
+{
+    private string $testPackagePath = '';
+    private string $phpCsBinary = '';
+
+    protected function setUp(): void
+    {
+        $libPath = (string) getenv('LIB_PATH');
+        $this->testPackagePath = $libPath . '/tests/e2e/test-package';
+        $this->phpCsBinary = $libPath . '/vendor/bin/phpcs';
+    }
+
+    public function testInpsydeAndTemplatesRulesets(): void
+    {
+        $output = [];
+        exec(
+            sprintf(
+                'cd %s && %s',
+                $this->testPackagePath,
+                $this->phpCsBinary
+            ),
+            $output
+        );
+
+        /** @var array<string> $output> */
+        if ($output[0] !== 'EE 2 / 2 (100%)') {
+            throw new RuntimeException(implode("\n", $output));
+        }
+
+        $json = end($output);
+
+        self::assertSame([
+            'index.php' => [
+                [
+                    'source' => 'Inpsyde.CodeQuality.NoElse.ElseFound',
+                    'line' => 12,
+                ],
+                [
+                    'source' => 'WordPress.Security.EscapeOutput.OutputNotEscaped',
+                    'line' => 13,
+                ],
+            ],
+            'template.php' => [
+
+                [
+                    'source' => 'WordPress.Security.EscapeOutput.OutputNotEscaped',
+                    'line' => 12,
+                ],
+                [
+                    'source' => 'InpsydeTemplates.Formatting.TrailingSemicolon.Found',
+                    'line' => 12,
+                ],
+                [
+                    'source' => 'Inpsyde.CodeQuality.DisableCallUserFunc.call_user_func_call_user_func',
+                    'line' => 15,
+                ],
+
+            ],
+        ], $this->phpCsNormalizedOutput($json));
+    }
+
+    /**
+     * @psalm-return array<string, list<array{source: string, line: positive-int}>>
+     */
+    private function phpCsNormalizedOutput(string $json): array
+    {
+        /** @var array{
+         *     files: array<string, array{
+         *         messages: list<array{
+         *             source: string,
+         *             line: positive-int,
+         *             ...
+         *             }>
+         *        }>
+         *     } $data */
+        $data = json_decode($json, true, 512, JSON_THROW_ON_ERROR);
+
+        $result = [];
+        foreach ($data['files'] as $fileName => $fileData) {
+            $baseName = basename($fileName);
+            $result[$baseName] = [];
+            foreach ($fileData['messages'] as ['source' => $source, 'line' => $line]) {
+                $result[$baseName][] = ['source' => $source, 'line' => $line];
+            }
+        }
+
+        return $result;
+    }
+}
diff --git a/tests/e2e/test-package/index.php b/tests/e2e/test-package/index.php
new file mode 100644
index 0000000..9193c39
--- /dev/null
+++ b/tests/e2e/test-package/index.php
@@ -0,0 +1,14 @@
+<?php
+
+declare(strict_types=1);
+
+$value = rand(0, 1);
+
+$successMessage = 'Success!';
+$errorMessage = 'Error!';
+
+if ($value > 0.5) {
+    echo esc_html($successMessage);
+} else {
+    echo $errorMessage;
+}
diff --git a/tests/e2e/test-package/phpcs.xml b/tests/e2e/test-package/phpcs.xml
new file mode 100644
index 0000000..70eccce
--- /dev/null
+++ b/tests/e2e/test-package/phpcs.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0"?>
+<ruleset name="Coding Standard Test">
+
+    <file>./index.php</file>
+    <file>./templates</file>
+
+    <arg value="sp"/>
+    <arg name="report" value="json"/>
+
+    <rule ref="Inpsyde"/>
+
+    <rule ref="Inpsyde.CodeQuality.NoElse">
+        <exclude-pattern>*/templates/*</exclude-pattern>
+    </rule>
+
+    <rule ref="InpsydeTemplates">
+        <include-pattern>*/templates/*</include-pattern>
+    </rule>
+
+</ruleset>
diff --git a/tests/e2e/test-package/templates/template.php b/tests/e2e/test-package/templates/template.php
new file mode 100644
index 0000000..2ebddc0
--- /dev/null
+++ b/tests/e2e/test-package/templates/template.php
@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+$value = rand(0, 1);
+$successMessage = 'Success!';
+$errorMessage = 'Error!' ?>
+
+<?php if ($value > 0.5) : ?>
+    <?= esc_html($successMessage) ?>
+<?php else : ?>
+    <?= $errorMessage; ?>
+<?php endif;
+
+call_user_func('strtolower', 'foo');
\ No newline at end of file