simplexml must be required #401

[villfa]

• bug fix / new feature? Fix issue Class 'SimpleXMLElement' not found #401
• BC break? no

The \SimpleXMLElement class is used under the src/ directory (see below) so the simplexml extension must be required to avoid a class not found error.

tester/src/Framework/DomQuery.php

Line 16 in 0b33a93

class DomQuery extends \SimpleXMLElement

[villfa]

@dg I understand that my proposition doesn't satisfy you (I guess you don't want ext-simplexml to be required for installing the library) but the 170b379 commit won't fix the issue.

The condition cannot be evaluated since the class not found error happens when the class is declared.

Another solution could be to move this condition to bootstrap.php.

[dg]

Oh yes! I used your solution with bootstrap.php