How Can I Write and Run a Django User Registration Unit Test Case

I am working on a Django Project that contain two apps; account and realestate and I have a user registration form for registration. This Registration Form is working correctly on my local machine but I want to write and run a Django Unit test for it to be sure everything is working internally well.
Below is my Registration Form code:

from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User

# Define the user_type choices
USER_TYPE_CHOICES = (
    ('landlord', 'Landlord'),
    ('agent', 'Agent'),
    ('prospect', 'Prospect'),
)

# Create the registration form
class RegistrationForm(UserCreationForm):
    username = forms.CharField(widget=forms.TextInput(attrs={'class': 'form-control left-label'}))
    password1 = forms.CharField(widget=forms.PasswordInput(attrs={'class': 'form-control left-label'}))
    password2 = forms.CharField(widget=forms.PasswordInput(attrs={'class': 'form-control left-label'}))
    user_type = forms.ChoiceField(choices=USER_TYPE_CHOICES, widget=forms.Select(attrs={'class': 'form-control left-label'}))
   
    
    class Meta:
        model = User
        fields = ['username', 'password1', 'password2', 'user_type']

Here is my User Registration View code:

def register(request):
    if request.method == 'POST':
        form = RegistrationForm(request.POST)
        if form.is_valid():
            # Create a new user object
            user = form.save()
            # Get the user_type value from the form
            user_type = form.cleaned_data['user_type']
            # Create a new object based on the user_type
            if user_type == 'landlord':
                Landlord.objects.create(user=user)
            elif user_type == 'agent':
                Agent.objects.create(user=user)
            elif user_type == 'prospect':
                Prospect.objects.create(user=user)
            # Log the user in and redirect to the homepage
            login(request, user)
            return redirect('success-account')
    else:
        form = RegistrationForm()
    context =  {
        'form': form,
        'page_title': 'Register',
        }
    return render(request, 'account/register.html', context)

Here is my Unit Test Code:

from django.contrib.auth.models import User
from django.test import TestCase, Client
from django.urls import reverse
from account.forms import RegistrationForm
from realestate.models import Landlord, Agent, Prospect

class RegisterViewTestCase(TestCase):
    def setUp(self):
        self.client = Client()
        self.url = reverse('register-account')

    def test_register_view_success(self):
        data = {
            'username': 'testuser',
            'email': 'testuser@example.com',
            'password1': 'testpassword',
            'password2': 'testpassword',
            'user_type': 'landlord'
        }
        form = RegistrationForm(data)
        self.assertTrue(form.is_valid())
        response = self.client.post(self.url, data)
        self.assertEqual(response.status_code, 302)
        self.assertRedirects(response, reverse('success-account'))

        user = User.objects.get(username='testuser')
        self.assertIsNotNone(user)
        self.assertTrue(user.check_password('testpassword'))

        landlord = Landlord.objects.get(user=user)
        self.assertIsNotNone(landlord)

    def test_register_view_invalid_form(self):
        data = {
            'username': 'testuser',
            'email': 'testuser@example.com',
            'password1': 'testpassword',
            'password2': 'wrongpassword',
            'user_type': 'landlord'
        }
        form = RegistrationForm(data)
        self.assertFalse(form.is_valid())
        response = self.client.post(self.url, data)
        self.assertEqual(response.status_code, 200)
        self.assertTemplateUsed(response, 'account/register.html')

        form = response.context['form']
        self.assertTrue(form.has_error('password2'))

        user_exists = User.objects.filter(username='testuser').exists()
        self.assertFalse(user_exists)

Any time I run python manage.py test account.tests.RegisterViewTestCase on the terminal error says: ERROR: RegisterViewTestCase (unittest.loader._FailedTest), AttributeError: module 'account.tests' has no attribute 'RegisterViewTestCase'.
What could be the issue here and how can it be fixed.

The error say that the test are not found within the 'account' package.

You need to check if your test file is properly named, for instance:

• tests.py

or

• test_register.py

and run $ ./manage.py test this

check django documentation from here:
> The default startapp template creates a tests.py file in the new
> application. This might be fine if you only have a few tests, but as
> your test suite grows you’ll likely want to restructure it into a
> tests package so you can split your tests into different submodules
> such as test_models.py, test_views.py, test_forms.py, etc. Feel free
> to pick whatever organizational scheme you like.

make sure that test file starts with test_*.py or if the tests file in test folder create init.py within the folder