💚 ci: Switch test suite to SQLite, remove service container deps

The Forgejo Actions CI `test` job has never passed — all 24 runs show
failure. Two root causes: the Forgejo `podman` runner's service
container networking doesn't reliably expose the PostgreSQL hostname,
and the CI pipeline doesn't provision RabbitMQ, causing
`fedora_messaging.api.publish()` to raise `ConnectionException`.

Since the codebase uses zero PostgreSQL-specific features, the test
database backend can safely be switched to SQLite in-memory. This
eliminates all external service dependencies for tests.

Changes to test infrastructure:
- Override `DATABASES` in `tsting.py` to use SQLite in-memory
- Add Celery memory broker settings to prevent Redis connections
- Add `CRISPY_ALLOWED_TEMPLATE_PACKS` for `bootstrap5` compatibility
- Set dummy `ADMIN_USERNAME`/`ADMIN_PASSWORD` for FAS `AccountSystem`
- Create `conftest.py` with autouse fixtures to mock `publish()`,
  `AccountSystem.people_query()`, and provide a stub `STATIC_ROOT`

Changes to CI pipeline:
- Remove `postgres:15` and `redis:7` service containers
- Remove `gcc`/`libpq-dev` system dependency step

Bug fixes surfaced by the new test environment:
- Replace stale `import ckeditor.fields` in migration 0007 with
  `models.TextField` (old `django-ckeditor` removed in Phase 5)
- Pass `link_rel=None` to `nh3.clean()` to fix `ValueError` when `'rel'`
  is in `allowed_attributes` (nh3 >= 0.2.18 API change)

Closes #281.

Assisted-by: Claude Opus 4.6 (1M context)
Signed-off-by: Justin Wheeler <jwheel@fedoraproject.org>

.forgejo/workflows/ci.yml

@@ -20,23 +20,12 @@ jobs:
     runs-on: podman
     container:
       image: python:3.13-slim
-    services:
-      db:
-        image: postgres:15
-        env:
-          POSTGRES_PASSWORD: example
-          POSTGRES_DB: postgres
-      redis:
-        image: redis:7
     steps:
       - name: Install Node.js for checkout action
         run: apt-get update && apt-get install -y --no-install-recommends nodejs
 
       - uses: https://code.forgejo.org/actions/checkout@v4
 
-      - name: Install system dependencies
-        run: apt-get install -y --no-install-recommends gcc libpq-dev
-
       - name: Install Poetry and project dependencies
         run: |
           pip install poetry

conftest.py

@@ -0,0 +1,36 @@
+import tempfile
+from pathlib import Path
+from unittest.mock import patch
+
+import pytest
+from django.test import override_settings
+
+MINIMAL_PNG = (
+    b'\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01'
+    b'\x00\x00\x00\x01\x08\x02\x00\x00\x00\x90wS\xde\x00'
+    b'\x00\x00\x0cIDATx\x9cc\xf8\x0f\x00\x00\x01\x01\x00'
+    b'\x05\x18\xd8N\x00\x00\x00\x00IEND\xaeB`\x82'
+)
+
+
+@pytest.fixture(autouse=True)
+def _mock_fedora_messaging_publish():
+    with patch('happinesspackets.messaging.views.publish'):
+        yield
+
+
+@pytest.fixture(autouse=True)
+def _mock_fas_people_query():
+    from fedora.client.fas2 import AccountSystem
+    with patch.object(AccountSystem, 'people_query', return_value=[]):
+        yield
+
+
+@pytest.fixture(autouse=True)
+def _mock_static_root_for_email():
+    with tempfile.TemporaryDirectory() as tmpdir:
+        images_dir = Path(tmpdir) / 'images'
+        images_dir.mkdir()
+        (images_dir / 'logo.svg').write_bytes(MINIMAL_PNG)
+        with override_settings(STATIC_ROOT=Path(tmpdir)):
+            yield

happinesspackets/messaging/forms.py

@@ -86,6 +86,7 @@ class MessageSendForm(forms.ModelForm):
             html,
             tags=allowed_tags,
             attributes=allowed_attributes,
+            link_rel=None,
         ) 
 
     def clean(self):

happinesspackets/messaging/migrations/0007_message_field.py

@@ -1,7 +1,6 @@
 # Generated by Django 2.0 on 2019-05-08 11:53
 
-import ckeditor.fields
-from django.db import migrations
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
@@ -14,6 +13,6 @@ class Migration(migrations.Migration):
         migrations.AlterField(
             model_name='message',
             name='message',
-            field=ckeditor.fields.RichTextField(),
+            field=models.TextField(),
         ),
     ]

happinesspackets/settings/tsting.py

@@ -18,3 +18,20 @@ AUTHENTICATION_BACKENDS = (
 DEBUG_TOOLBAR_CONFIG = {
     "SHOW_TOOLBAR_CALLBACK" : lambda request: False,
 }
+
+CRISPY_ALLOWED_TEMPLATE_PACKS = ('bootstrap5',)
+
+ADMIN_USERNAME = 'test'
+ADMIN_PASSWORD = 'test'
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': ':memory:',
+    }
+}
+
+CELERY_TASK_ALWAYS_EAGER = True
+CELERY_TASK_EAGER_PROPAGATES = True
+CELERY_BROKER_URL = 'memory://'
+CELERY_RESULT_BACKEND = 'cache+memory://'