Adds migration and more tests

bookwyrm/migrations/0183_auto_20231105_1607.py

@@ -0,0 +1,25 @@
+# Generated by Django 3.2.20 on 2023-11-05 16:07
+
+from django.db import migrations
+from bookwyrm.models import User
+
+
+def erase_deleted_user_data(apps, schema_editor):
+    """Retroactively clear user data"""
+    for user in User.get_permanently_deleted_users():
+        user.erase_user_data()
+        user.save(broadcast=False)
+        user.erase_user_statuses(broadcast=False)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0182_auto_20231027_1122"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            erase_deleted_user_data, reverse_code=migrations.RunPython.noop
+        )
+    ]