🎉(all) bootstrap the Calendars project

This repository was forked from Drive in late December 2025 and
boostraped as a minimal demo of backend+caldav server+frontend
integration. There is much left to do and to fix!

src/backend/core/tests/conftest.py

@@ -0,0 +1,148 @@
+"""Fixtures for tests in the calendars core application"""
+
+import base64
+from unittest import mock
+
+from django.core.cache import cache
+from django.db import connection
+
+import pytest
+import responses
+from cryptography.fernet import Fernet
+
+from core import factories
+from core.tests.utils.urls import reload_urls
+
+USER = "user"
+TEAM = "team"
+VIA = [USER, TEAM]
+
+
+@pytest.fixture(autouse=True)
+def truncate_davical_tables(django_db_setup, django_db_blocker):
+    """Fixture to truncate DAViCal tables at the start of each test.
+
+    DAViCal tables are created by the DAViCal container migrations, not Django.
+    We just truncate them to ensure clean state for each test.
+    """
+    with django_db_blocker.unblock():
+        with connection.cursor() as cursor:
+            # Truncate DAViCal tables if they exist (created by DAViCal container)
+            cursor.execute("""
+                DO $$ 
+                BEGIN
+                    IF EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'principal') THEN
+                        TRUNCATE TABLE principal CASCADE;
+                    END IF;
+                    IF EXISTS (SELECT FROM information_schema.tables WHERE table_name = 'usr') THEN
+                        TRUNCATE TABLE usr CASCADE;
+                    END IF;
+                END $$;
+            """)
+    yield
+
+
+@pytest.fixture(autouse=True)
+def clear_cache():
+    """Fixture to clear the cache after each test."""
+    yield
+    cache.clear()
+    # Clear functools.cache for functions decorated with @functools.cache
+
+
+@pytest.fixture
+def mock_user_teams():
+    """Mock for the "teams" property on the User model."""
+    with mock.patch(
+        "core.models.User.teams", new_callable=mock.PropertyMock
+    ) as mock_teams:
+        yield mock_teams
+
+
+def resource_server_backend_setup(settings):
+    """
+    A fixture to create a user token for testing.
+    """
+    assert (
+        settings.OIDC_RS_BACKEND_CLASS
+        == "lasuite.oidc_resource_server.backend.ResourceServerBackend"
+    )
+
+    settings.OIDC_RESOURCE_SERVER_ENABLED = True
+    settings.OIDC_RS_CLIENT_ID = "some_client_id"
+    settings.OIDC_RS_CLIENT_SECRET = "some_client_secret"
+
+    settings.OIDC_OP_URL = "https://oidc.example.com"
+    settings.OIDC_VERIFY_SSL = False
+    settings.OIDC_TIMEOUT = 5
+    settings.OIDC_PROXY = None
+    settings.OIDC_OP_JWKS_ENDPOINT = "https://oidc.example.com/jwks"
+    settings.OIDC_OP_INTROSPECTION_ENDPOINT = "https://oidc.example.com/introspect"
+    settings.OIDC_RS_SCOPES = ["openid", "groups"]
+    settings.OIDC_RS_ALLOWED_AUDIENCES = ["some_service_provider"]
+
+
+@pytest.fixture
+def resource_server_backend_conf(settings):
+    """
+    A fixture to create a user token for testing.
+    """
+    resource_server_backend_setup(settings)
+    reload_urls()
+
+
+@pytest.fixture
+def resource_server_backend(settings):
+    """
+    A fixture to create a user token for testing.
+    Including a mocked introspection endpoint.
+    """
+    resource_server_backend_setup(settings)
+    reload_urls()
+
+    with responses.RequestsMock() as rsps:
+        rsps.add(
+            responses.POST,
+            "https://oidc.example.com/introspect",
+            json={
+                "iss": "https://oidc.example.com",
+                "aud": "some_client_id",  # settings.OIDC_RS_CLIENT_ID
+                "sub": "very-specific-sub",
+                "client_id": "some_service_provider",
+                "scope": "openid groups",
+                "active": True,
+            },
+        )
+
+        yield rsps
+
+
+@pytest.fixture
+def user_specific_sub():
+    """
+    A fixture to create a user token for testing.
+    """
+    user = factories.UserFactory(sub="very-specific-sub")
+
+    yield user
+
+
+def build_authorization_bearer(token):
+    """
+    Build an Authorization Bearer header value from a token.
+
+    This can be used like this:
+    client.post(
+        ...
+        HTTP_AUTHORIZATION=f"Bearer {build_authorization_bearer('some_token')}",
+    )
+    """
+    return base64.b64encode(token.encode("utf-8")).decode("utf-8")
+
+
+@pytest.fixture
+def user_token():
+    """
+    A fixture to create a user token for testing.
+    """
+    return build_authorization_bearer("some_token")