Fix DDC767Test failing on php7 + pg94

[mbeccati]

The failure happens when running the full suite or even just:

phpunit tests/Doctrine/Tests/ORM/Functional/Ticket

see: https://revive.beccati.com/bamboo/browse/PHP-DOCPG-MAS-164/log

For reference:

05-Apr-2015 04:39:42    ...S......................................................... 1342 / 2921 ( 45%)
05-Apr-2015 04:39:43    ........SSS...........................................SS
05-Apr-2015 04:39:43    Fatal error: Argument 1 passed to Doctrine\Tests\Models\CMS\CmsUser::addGroup() must be an instance of Doctrine\Tests\Models\CMS\CmsGroup, null given, called in /home/atlassian/bamboo/xml-data/build-dir/PHP-DOCPG-MAS/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC767Test.php on line 63 and defined in /home/atlassian/bamboo/xml-data/build-dir/PHP-DOCPG-MAS/tests/Doctrine/Tests/Models/CMS/CmsUser.php on line 211

I wasn't able to replicate with other PHP versions. On PHP7, running tests/Doctrine/Tests/ORM/Functional/Ticket yields 20, 21 and 22 as group IDs, rather than 1, 2, 3. Maybe some cleanup isn't run?

Removing hardocoded IDs seems a sensible thing to do anyway.

[doctrinebot]

Hello,

thank you for creating this pull request. I have automatically opened an issue
on our Jira Bug Tracker for you. See the issue link:

http://www.doctrine-project.org/jira/browse/DDC-3670

We use Jira to track the state of pull requests and the versions they got
included in.

[Ocramius]

The test is hardened correctly in any case.

At a first glance, this was a fragile test that was passing due to order of cleanups of other tests: merging.

[Ocramius]

Backported into 2.5 at 5843453