diff --git a/src/StimulusBundle/tests/Dto/StimulusActionAttributeTest.php b/src/StimulusBundle/tests/Dto/StimulusActionAttributeTest.php
deleted file mode 100644
index bb152f671b8..00000000000
--- a/src/StimulusBundle/tests/Dto/StimulusActionAttributeTest.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\UX\StimulusBundle\Tests\Dto;
-
-use PHPUnit\Framework\Attributes\DataProvider;
-use PHPUnit\Framework\TestCase;
-use Symfony\UX\StimulusBundle\Dto\StimulusAttributes;
-use Twig\Environment;
-use Twig\Loader\ArrayLoader;
-
-final class StimulusActionAttributeTest extends TestCase
-{
-    private StimulusAttributes $stimulusAttributes;
-
-    protected function setUp(): void
-    {
-        $this->stimulusAttributes = new StimulusAttributes(new Environment(new ArrayLoader()));
-    }
-
-    /**
-     * @dataProvider provideAddActionData
-     */
-    public function testAddAction(string $controllerName, string $actionName, ?string $eventName, string $expectedAction): void
-    {
-        $this->stimulusAttributes->addAction($controllerName, $actionName, $eventName);
-        $attributesHtml = (string) $this->stimulusAttributes;
-        self::assertSame(\sprintf('data-action="%s"', $expectedAction), $attributesHtml);
-    }
-
-    /**
-     * @return iterable<array{
-     *     controllerName: string,
-     *     actionName: string,
-     *     eventName: ?string,
-     *     expectedAction: string,
-     * }>
-     */
-    public static function provideAddActionData(): iterable
-    {
-        // basic datasets
-        yield 'foo#bar' => [
-            'controllerName' => 'foo',
-            'actionName' => 'bar',
-            'eventName' => null,
-            'expectedAction' => 'foo#bar',
-        ];
-        yield 'baz->foo#bar' => [
-            'controllerName' => 'foo',
-            'actionName' => 'bar',
-            'eventName' => 'baz',
-            'expectedAction' => 'baz->foo#bar',
-        ];
-
-        // datasets from https://github.com/hotwired/stimulus
-        yield 'keydown.esc@document->a#log' => [
-            'controllerName' => 'a',
-            'actionName' => 'log',
-            'eventName' => 'keydown.esc@document',
-            'expectedAction' => 'keydown.esc@document->a#log',
-        ];
-        yield 'keydown.enter->a#log' => [
-            'controllerName' => 'a',
-            'actionName' => 'log',
-            'eventName' => 'keydown.enter',
-            'expectedAction' => 'keydown.enter->a#log',
-        ];
-        yield 'keydown.shift+a->a#log' => [
-            'controllerName' => 'a',
-            'actionName' => 'log',
-            'eventName' => 'keydown.shift+a',
-            'expectedAction' => 'keydown.shift+a->a#log',
-        ];
-        yield 'keydown@window->c#log' => [
-            'controllerName' => 'c',
-            'actionName' => 'log',
-            'eventName' => 'keydown@window',
-            'expectedAction' => 'keydown@window->c#log',
-        ];
-        yield 'click->c#log:once' => [
-            'controllerName' => 'c',
-            'actionName' => 'log:once',
-            'eventName' => 'click',
-            'expectedAction' => 'click->c#log:once',
-        ];
-
-        // extended datasets
-        yield 'vue:mount->foo#bar:passive' => [
-            'controllerName' => 'foo',
-            'actionName' => 'bar:passive',
-            'eventName' => 'vue:mount',
-            'expectedAction' => 'vue:mount->foo#bar:passive',
-        ];
-        yield 'foo--controller-1:baz->bar--controller-2#log' => [
-            'controllerName' => '@bar/controller_2',
-            'actionName' => 'log',
-            'eventName' => '@foo/controller_1:baz',
-            'expectedAction' => 'foo--controller-1:baz->bar--controller-2#log',
-        ];
-        yield 'foo--controller-1:baz@document->bar--controller-2#log:capture' => [
-            'controllerName' => '@bar/controller_2',
-            'actionName' => 'log:capture',
-            'eventName' => '@foo/controller_1:baz@document',
-            'expectedAction' => 'foo--controller-1:baz@document->bar--controller-2#log:capture',
-        ];
-    }
-}
diff --git a/src/StimulusBundle/tests/Dto/StimulusAttributesTest.php b/src/StimulusBundle/tests/Dto/StimulusAttributesTest.php
index 17527a3491c..be252c2863f 100644
--- a/src/StimulusBundle/tests/Dto/StimulusAttributesTest.php
+++ b/src/StimulusBundle/tests/Dto/StimulusAttributesTest.php
@@ -148,4 +148,91 @@ public function testAddAttribute()
         $this->assertSame('foo="bar baz"', (string) $this->stimulusAttributes);
         $this->assertSame(['foo' => 'bar baz'], $this->stimulusAttributes->toArray());
     }
+
+    /**
+     * @dataProvider provideAddComplexActionData
+     */
+    public function testAddComplexAction(string $controllerName, string $actionName, ?string $eventName, string $expectedAction): void
+    {
+        $this->stimulusAttributes->addAction($controllerName, $actionName, $eventName);
+        $attributesHtml = (string) $this->stimulusAttributes;
+        self::assertSame(\sprintf('data-action="%s"', $expectedAction), $attributesHtml);
+    }
+
+    /**
+     * @return iterable<array{
+     *     controllerName: string,
+     *     actionName: string,
+     *     eventName: ?string,
+     *     expectedAction: string,
+     * }>
+     */
+    public static function provideAddComplexActionData(): iterable
+    {
+        // basic datasets
+        yield 'foo#bar' => [
+            'controllerName' => 'foo',
+            'actionName' => 'bar',
+            'eventName' => null,
+            'expectedAction' => 'foo#bar',
+        ];
+        yield 'baz->foo#bar' => [
+            'controllerName' => 'foo',
+            'actionName' => 'bar',
+            'eventName' => 'baz',
+            'expectedAction' => 'baz->foo#bar',
+        ];
+
+        // datasets from https://github.com/hotwired/stimulus
+        yield 'keydown.esc@document->a#log' => [
+            'controllerName' => 'a',
+            'actionName' => 'log',
+            'eventName' => 'keydown.esc@document',
+            'expectedAction' => 'keydown.esc@document->a#log',
+        ];
+        yield 'keydown.enter->a#log' => [
+            'controllerName' => 'a',
+            'actionName' => 'log',
+            'eventName' => 'keydown.enter',
+            'expectedAction' => 'keydown.enter->a#log',
+        ];
+        yield 'keydown.shift+a->a#log' => [
+            'controllerName' => 'a',
+            'actionName' => 'log',
+            'eventName' => 'keydown.shift+a',
+            'expectedAction' => 'keydown.shift+a->a#log',
+        ];
+        yield 'keydown@window->c#log' => [
+            'controllerName' => 'c',
+            'actionName' => 'log',
+            'eventName' => 'keydown@window',
+            'expectedAction' => 'keydown@window->c#log',
+        ];
+        yield 'click->c#log:once' => [
+            'controllerName' => 'c',
+            'actionName' => 'log:once',
+            'eventName' => 'click',
+            'expectedAction' => 'click->c#log:once',
+        ];
+
+        // extended datasets
+        yield 'vue:mount->foo#bar:passive' => [
+            'controllerName' => 'foo',
+            'actionName' => 'bar:passive',
+            'eventName' => 'vue:mount',
+            'expectedAction' => 'vue:mount->foo#bar:passive',
+        ];
+        yield 'foo--controller-1:baz->bar--controller-2#log' => [
+            'controllerName' => '@bar/controller_2',
+            'actionName' => 'log',
+            'eventName' => '@foo/controller_1:baz',
+            'expectedAction' => 'foo--controller-1:baz->bar--controller-2#log',
+        ];
+        yield 'foo--controller-1:baz@document->bar--controller-2#log:capture' => [
+            'controllerName' => '@bar/controller_2',
+            'actionName' => 'log:capture',
+            'eventName' => '@foo/controller_1:baz@document',
+            'expectedAction' => 'foo--controller-1:baz@document->bar--controller-2#log:capture',
+        ];
+    }
 }