A: 

a. this should be the first line at your code file (tests.py)

#!/usr/bin/env python

b. run $ chmod +x tests.py

Tzury Bar Yochay
Nope this already is done. It works from the command line no problem.
rh0dium
+1  A: 

You could create an "External Tool" configuration for your project, such as:

Location: ${project_loc}/src/${project_name}/manage.py
Working Directory: ${project_loc}/src/${project_name}/
Arguments: test ${string_prompt}

This will run manage.py test <whatever name you type in the string prompt>.

The values above assume that you created a pydev project in Eclipse and then housed your Django project in the pydev src directory. It also assumes that you have the project name for pydev be the same name of your Django project. It will use the currently selected project in the package explorer to determine project_loc and project_name.

celopes
You totally nailed it!! Thanks!
rh0dium