PHP not displaying errors when using PHPUnit -

when using phpunit terminal php not reporting errors if php error exists within php file. here example file using:

<?php  class assertionstest extends phpunit_framework_testcase {     public function testexception()     {         new nonexistantclass;     } }

clearly nonexistantclass no exist. when running phpunit, getting this:

jamesjeffery$ phpunit assertionstest.php     phpunit 3.7.19 sebastian bergmann.

no php errors.

i using php 5.4.10. have error reporting set e_all , display_errors set on.

any idea's happening?

Kiastu