import unittest
import os
from django.core import serializers
from django.db.models import get_apps
from django.conf import settings

from app.models import ...

class MyTestCase(unittest.TestCase):
    def setUp(self):
        self.apps = get_apps()
    
    def test...(self):
        ...
        
    def tearDown(self):
        objects = []
        for app in self.apps:
            for model in get_models(app):
                objects.extend(model._default_manager.all())

        out = open(os.path.join(settings.SVN_DIR,'fixtures','tests.json'), 'w')
        out.write(serializers.serialize('json',objects))
        out.close()