diff --git a/src/Bundle/ChillMainBundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Bundle/ChillMainBundle/Tests/DependencyInjection/ConfigurationTest.php
new file mode 100644
index 000000000..7f4baa119
--- /dev/null
+++ b/src/Bundle/ChillMainBundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Chill\MainBundle\Tests\DependencyInjection;
+
+use Chill\MainBundle\DependencyInjection\Configuration;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Processor;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+
+class ConfigurationTest extends TestCase
+{
+    public function testTopBannerConfiguration(): void
+    {
+        $containerBuilder = new ContainerBuilder();
+        $configuration = new Configuration([], $containerBuilder);
+        $processor = new Processor();
+
+        // Test with top_banner configuration
+        $config = [
+            'chill_main' => [
+                'top_banner' => [
+                    'text' => [
+                        'fr' => 'Vous travaillez actuellement avec la version de pré-production de Chill.',
+                        'nl' => 'Je werkte momenteel in de pré-productie versie van Chill.'
+                    ],
+                    'color' => 'white',
+                    'background-color' => 'red'
+                ]
+            ]
+        ];
+
+        $processedConfig = $processor->processConfiguration($configuration, $config);
+
+        self::assertArrayHasKey('top_banner', $processedConfig);
+        self::assertArrayHasKey('text', $processedConfig['top_banner']);
+        self::assertArrayHasKey('fr', $processedConfig['top_banner']['text']);
+        self::assertArrayHasKey('nl', $processedConfig['top_banner']['text']);
+        self::assertSame('white', $processedConfig['top_banner']['color']);
+        self::assertSame('red', $processedConfig['top_banner']['background_color']);
+    }
+
+    public function testTopBannerConfigurationOptional(): void
+    {
+        $containerBuilder = new ContainerBuilder();
+        $configuration = new Configuration([], $containerBuilder);
+        $processor = new Processor();
+
+        // Test without top_banner configuration
+        $config = [
+            'chill_main' => []
+        ];
+
+        $processedConfig = $processor->processConfiguration($configuration, $config);
+
+        // top_banner should not be present when not configured
+        self::assertArrayNotHasKey('top_banner', $processedConfig);
+    }
+
+    public function testTopBannerWithMinimalConfiguration(): void
+    {
+        $containerBuilder = new ContainerBuilder();
+        $configuration = new Configuration([], $containerBuilder);
+        $processor = new Processor();
+
+        // Test with minimal top_banner configuration (only text)
+        $config = [
+            'chill_main' => [
+                'top_banner' => [
+                    'text' => [
+                        'fr' => 'Test message'
+                    ]
+                ]
+            ]
+        ];
+
+        $processedConfig = $processor->processConfiguration($configuration, $config);
+
+        self::assertArrayHasKey('top_banner', $processedConfig);
+        self::assertArrayHasKey('text', $processedConfig['top_banner']);
+        self::assertSame('Test message', $processedConfig['top_banner']['text']['fr']);
+        self::assertNull($processedConfig['top_banner']['color']);
+        self::assertNull($processedConfig['top_banner']['background_color']);
+    }
+}