如何在Travis中正确引导Symfony捆绑测试套件？

I developed a bundle to setup maintenance mode on a SF app.

I also wrote tests for it, and this works if

• I run test suite within a complete SF environment (i.e. run ./vendor/bin/simple-phpunit -c ./vendor/lch/maintennance-bundle/phpunit.xml.dist)
• I target config/bootstrap.php on my bundle test suite.

I recently added Travis support and I can't find proper way to make my test run in th CI context.

Actual bootstrap.php contains a simple autoload.php include, but Travis keeps telling me it can't find even namespaces.

• Should I use a boostrap to create application?
• What to put in it in order to bootstrap my minimal application?