diff --git a/.gitignore b/.gitignore
index c7eea7f..0c4e8bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,9 @@
 ### MacOs ###
 .DS_Store
 
+### PhpStorm ###
+/.idea
+
 ### Composer ###
 composer.lock
 composer.phar
diff --git a/composer.json b/composer.json
index 2a3bd38..9aca545 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,8 @@
         "files": [ "src/classnames/function.php" ],
         "psr-4": {
             "ClassNames\\": "src/classnames",
-            "MergeCoverage\\": "src/merge-coverage"
+            "MergeCoverage\\": "src/merge-coverage",
+            "DataProvider\\": "src/data-provider"
         }
     },
     "require-dev": {
diff --git a/phpunit.xml b/phpunit.xml
index 8e37f4a..42ddcf6 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -13,6 +13,12 @@
         <testsuite name="classnames">
             <directory>src/classnames/Tests</directory>
         </testsuite>
+        <testsuite name="time-of-day">
+            <directory>src/time-of-day/Tests</directory>
+        </testsuite>
+        <testsuite name="data-provider">
+            <directory>src/data-provider/Tests</directory>
+        </testsuite>
     </testsuites>
 
     <source restrictDeprecations="true" restrictNotices="true" restrictWarnings="true">
diff --git a/src/data-provider/ShouldBeGranted.php b/src/data-provider/ShouldBeGranted.php
new file mode 100644
index 0000000..2427d7a
--- /dev/null
+++ b/src/data-provider/ShouldBeGranted.php
@@ -0,0 +1,14 @@
+<?php declare(strict_types=1);
+
+namespace DataProvider;
+
+#[\Attribute(\Attribute::TARGET_CLASS|\Attribute::IS_REPEATABLE)]
+class ShouldBeGranted
+{
+    public function __construct(
+        public readonly string $role
+    )
+    {
+
+    }
+}
\ No newline at end of file
diff --git a/src/data-provider/Tests/PatateTest.php b/src/data-provider/Tests/PatateTest.php
new file mode 100644
index 0000000..c840116
--- /dev/null
+++ b/src/data-provider/Tests/PatateTest.php
@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+
+namespace DataProvider\Tests;
+
+use DataProvider\ShouldBeGranted;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\DataProviderExternal;
+use PHPUnit\Framework\Attributes\TestWith;
+
+#[ShouldBeGranted('ROLE_LIST')]
+#[ShouldBeGranted('ROLE_ADMIN')]
+class PatateTest extends TestCase
+{
+    #[DataProvider('fetchRoles')]
+    public function testRoleIsOK($role)
+    {
+        self::assertSame('ROLE_LIST', $role);
+    }
+}
\ No newline at end of file
diff --git a/src/data-provider/Tests/TestCase.php b/src/data-provider/Tests/TestCase.php
new file mode 100644
index 0000000..75d801c
--- /dev/null
+++ b/src/data-provider/Tests/TestCase.php
@@ -0,0 +1,18 @@
+<?php declare(strict_types=1);
+
+namespace DataProvider\Tests;
+
+use DataProvider\ShouldBeGranted;
+use ReflectionClass;
+
+class TestCase extends \PHPUnit\Framework\TestCase
+{
+    public static function fetchRoles()
+    {
+        $reflectionClass = new ReflectionClass(static::class);
+        $attributes = $reflectionClass->getAttributes(ShouldBeGranted::class);
+        foreach ($attributes as $attribute) {
+            yield [$attribute->newInstance()->role];
+        }
+    }
+}
\ No newline at end of file