python - Django: HAML template not rendering when testing (and no error when run normally) -

i'm trying add selenium tests existing project has not used django testing before. when run either runserver or wsgi project working. when i'm trying run test case test fails because django outputs haml files sources instead of interpreting them, if there no template_loaders setting. added assertion setting test suite runner class , assertion not fail, setting surely set.

there no errors when run project outside testing environment.

n.b. use hamlpy , django 1.5 (migrating newer version without tests not option).

where should cause of error?