gistfile1.py

from django.core.management.base import AppCommand, BaseCommand
from django.core.management import call_command

from django.conf import settings

class Command(BaseCommand):
    
    def handle(self, *args, **options):
        test_app_path = ()
        for app in settings.MY_INSTALLED_APPS:
            test_app = app.split('.')
            if len(test_app) > 1:
                test_app = (test_app[-1],)
            else:
                test_app = (app,)
            test_app_path += test_app
        call_command("test",*test_app_path, **options)