Testing with Django's TestCase and async don't work with Database

Question

So I'm using django_channels to handle some WebSocket stuff and since Django 3.1 you can create unittest-like tests for testing async and decided to go with that.

It happens to be that for some reason when accessing the Consumer can't reach the data.

I'm using model_bakery (but also tried with plain Django ORM) and have a very simple test.

class TestChatConsumer(TestCase):
    url = '/ws/chat/'

    def setUp(self):
        self.user = baker.make_recipe('registration.user')
        self.chat = baker.make_recipe('chat.chat')

    async def test_setup_channel_layer_ok(self):
        consummer = WebsocketCommunicator(
            application=AuthMiddlewareStack(ChatConsumer.as_asgi()),
            path=self.url,
        )
        consummer.scope['user'] = self.user
        await consummer.connect()
        await consummer.send_json_to({
            'type': 'setup_channel_layer',
            'chat': self.chat.pk,
        })
        response = await consummer.receive_json_from()

        self.assertEqual(response['type'], 'info')
        self.assertEqual(response['content']['message'], 'Chat connected!')

The problem is that on the test the entry is created but when accessing consumers the entry seems to be off. Do you know if there's any desync between test database or something?

Edit

I added a dummy function to check for tests on consumer and got this.

Test:

Consumer code:

Result on that breakpoint:

Answer 1

So at the end the problem was django.test.TestCase.
It was fixed by changing class TestChatConsumer(TestCase): for class TestChatConsumer(TransactionTestCase):

Seems like TransactionTestCase comes with a lot of features that TestCase doesn't have.

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