minor #17638 [Finder] backport GlobTest from 2.7 branch (xabbuh)

This PR was merged into the 2.3 branch.

Discussion
----------

[Finder] backport GlobTest from 2.7 branch

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Commits
-------

ceaeb43 backport GlobTest from 2.7 branch

Author: fabpot

Tests/FinderTest.php

@@ -248,6 +248,7 @@ public function testIn()
             __DIR__.DIRECTORY_SEPARATOR.'BsdFinderTest.php',
             __DIR__.DIRECTORY_SEPARATOR.'FinderTest.php',
             __DIR__.DIRECTORY_SEPARATOR.'GnuFinderTest.php',
+            __DIR__.DIRECTORY_SEPARATOR.'GlobTest.php',
         );
 
         $this->assertIterator($expected, $iterator);

Tests/GlobTest.php

@@ -0,0 +1,23 @@
+<?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\Component\Finder\Tests;
+
+use Symfony\Component\Finder\Glob;
+
+class GlobTest extends \PHPUnit_Framework_TestCase
+{
+    public function testGlobToRegexDelimiters()
+    {
+        $this->assertEquals('#^(?=[^\.])\#$#', Glob::toRegex('#'));
+        $this->assertEquals('#^\.[^/]*$#', Glob::toRegex('.*'));
+    }
+}