Fix user deletion

priv/repo/migrations/20201230085939_delete_email_records_when_user_is_deleted.exs

@@ -0,0 +1,17 @@
+defmodule Plausible.Repo.Migrations.DeleteEmailRecordsWhenUserIsDeleted do
+  use Ecto.Migration
+
+  def change do
+    alter table(:create_site_emails) do
+      modify :user_id, references(:users, on_delete: :delete_all),
+        null: false,
+        from: references(:users)
+    end
+
+    alter table(:check_stats_emails) do
+      modify :user_id, references(:users, on_delete: :delete_all),
+        null: false,
+        from: references(:users)
+    end
+  end
+end

test/plausible_web/controllers/auth_controller_test.exs

@@ -302,6 +302,20 @@ defmodule PlausibleWeb.AuthControllerTest do
         }
       ])
 
+      Repo.insert_all("create_site_emails", [
+        %{
+          user_id: user.id,
+          timestamp: NaiveDateTime.utc_now()
+        }
+      ])
+
+      Repo.insert_all("check_stats_emails", [
+        %{
+          user_id: user.id,
+          timestamp: NaiveDateTime.utc_now()
+        }
+      ])
+
       insert(:google_auth, site: site, user: user)
       insert(:subscription, user: user, status: "deleted")