I think it's used there because CRYPT_HASH_MODE needs to  be set. Without the require statement it would result in a "Constant undefined"-error. But this shouldn't be the case here. 



> Am 26.12.2013 um 16:57 schrieb terrafrost <notifications@github.com>:
> 
> In tests/Crypt/RSA/Test.php:
> 
> > @@ -0,0 +1,37 @@
> > +<?php
> > +/**
> > + * @author     Jim Wigginton <terrafrost@php.net>
> > + * @copyright  MMXIII Jim Wigginton
> > + * @license    http://www.opensource.org/licenses/mit-license.html  MIT License
> > + */
> > +
> > +class Crypt_RSA_Test extends PhpseclibTestCase
> > +{
> > +	static public function setUpBeforeClass()
> > +	{
> > +		require_once('Crypt/RSA.php');
> I just adapted https://github.com/phpseclib/phpseclib/blob/master/tests/Crypt/Hash/TestCase.php#L12
> 
> —
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