diff --git a/Tests/verifyTest.php b/Tests/verifyTest.php
index 67cbe54..0498d4e 100644
--- a/Tests/verifyTest.php
+++ b/Tests/verifyTest.php
@@ -58,6 +58,21 @@ class test_verify extends PHPUnit_Framework_TestCase
   }
 
 
+  /////////////////
+  //   STRINGS   //
+  /////////////////
+  public function test_staticIsAllowedChars_1 ()
+  {
+    $res = \verify::staticIsAllowedChars ("éléphant", "abcd");
+    $this->assertSame ($res, false);
+  }
+
+  public function test_staticIsAllowedChars_2 ()
+  {
+    $res = \verify::staticIsAllowedChars ("éléphant", "anhplté");
+    $this->assertSame ($res, true);
+  }
+
   /////////////////
   //   NUMBERS   //
   /////////////////