public function invokeWithCustomConfig()
{
$sm = $this->createServiceManagerMock([Module::CONFIG_KEY => ['options' => ['regexp' => '/([^a-z0-9.]|-)+/']]]);
$slugify = call_user_func($this->slugifyService, $sm);
$this->assertInstanceOf('Cocur\\Slugify\\Slugify', $slugify);
// Make sure reg exp is the one provided and dots are kept
$actual = 'Hello My Friend.zip';
$expected = 'hello-my-friend.zip';
$this->assertEquals($expected, $slugify->slugify($actual));
}