PHPUnit from Composer: Require doesn't works

Hi Community

Since hours i'm searching for a solution for this problem, but I have no clue what's wrong.
I've added PHPUnit from the composer. Normal tests without any external classes are working perfectly fine.
As soon i include a needed class, the hole test doesn't work anymore.

Here the example:


<?php
error_reporting(E_ALL);

//require_once('../classes/class.GetAddressesSingleton.php');

class GetAddressesSingletonTest extends PHPUnit_Framework_TestCase {
    protected $billingNr  = null;
    protected $customerNr = null;

    protected function setUp(){
        $this->billingNr = "";
        $this->customerNr = "";
    }

    public function testSomething(){
        $this->assertTrue(1==1);
    }
}

This test case works fine.
If I uncomment the require_once statement, I get an exite code 255.

The folder structure is like this:

X
     classes
               class.GetAddressesSingleton.php
     Tests
               GetAdressesSingletonTest.php
               test.php

Hint: If I put the exactly same require_once in to test.php (NOT a PHPUnit test!) it also works fine..

No Idea guys... Hope somebody has an idea..

UPDATE:

Not it's gettint weird... When I call the test from the Terminal IT WORKS?? :)

Cheers