diff --git a/tests/LocaleManagerTest.php b/tests/LocaleManagerTest.php
index 073b9a5..693346f 100644
--- a/tests/LocaleManagerTest.php
+++ b/tests/LocaleManagerTest.php
@@ -28,6 +28,18 @@ class LocaleManagerTest extends \PHPUnit_Framework_TestCase
         $this->localeManager = new LocaleManager();
     }
 
+    /**
+     * Test the getSupportedLocales function.
+     *
+     * @return void
+     */
+    public function testConstructorWithCookies()
+    {
+        $_SESSION['Alltube\LocaleManager']['locale'] = 'foo_BAR';
+        $localeManager = new LocaleManager([]);
+        $this->assertEquals('foo_BAR', (string) $localeManager->getLocale());
+    }
+
     /**
      * Test the getSupportedLocales function.
      *