Allow numbers in fqsen

Author: jaapio

src/Fqsen.php

@@ -38,7 +38,7 @@ final class Fqsen
     public function __construct($fqsen)
     {
         $matches = array();
-        $result = preg_match('/^\\\\([A-Za-z_\\\\]+)(?:[:]{2}\\$?([a-zA-Z_]+))?(?:\\(\\))?$/', $fqsen, $matches);
+        $result = preg_match('/^\\\\([\\w_\\\\]+)(?:[:]{2}\\$?([\\w_]+))?(?:\\(\\))?$/', $fqsen, $matches);
 
         if ($result === 0) {
             throw new \InvalidArgumentException(

tests/unit/FqsenTest.php

@@ -39,6 +39,7 @@ public function validFqsenProvider()
             ['\My\Space', 'Space'],
             ['\My\Space\myFunction()', 'myFunction'],
             ['\My\Space\MY_CONSTANT', 'MY_CONSTANT'],
+            ['\My\Space\MY_CONSTANT2', 'MY_CONSTANT2'],
             ['\My\Space\MyClass', 'MyClass'],
             ['\My\Space\MyInterface', 'MyInterface'],
             ['\My\Space\MyTrait', 'MyTrait'],