feat: step 11 done

test/bds/cli_sync_test.exs

@@ -4,6 +4,7 @@ defmodule BDS.CliSyncTest do
   import Ecto.Query
 
   alias BDS.CliSync
+  alias BDS.CliSync.Watcher
   alias BDS.Repo
 
   setup do
@@ -24,6 +25,25 @@ defmodule BDS.CliSyncTest do
     assert is_integer(seen_notification.seen_at)
   end
 
+  test "watcher broadcasts entity change events after database mutations are detected" do
+    Ecto.Adapters.SQL.Sandbox.mode(BDS.Repo, {:shared, self()})
+    Phoenix.PubSub.subscribe(BDS.PubSub, Watcher.topic())
+
+    watcher =
+      start_supervised!({Watcher, poll_interval_ms: 60_000, debounce_ms: 0})
+
+    Ecto.Adapters.SQL.Sandbox.allow(BDS.Repo, self(), watcher)
+
+    assert {:ok, notification} = CliSync.cli_mutation_performed("post", "post-1", :updated)
+
+    :ok = Watcher.poll_now(watcher)
+
+    assert_receive {:entity_changed, %{entity: "post", entity_id: "post-1", action: :updated}}, 500
+
+    seen_notification = Repo.get!(BDS.CliSync.Notification, notification.id)
+    assert is_integer(seen_notification.seen_at)
+  end
+
   test "processed notifications are pruned after one hour and unprocessed notifications after one day" do
     now = BDS.Persistence.now_ms()