test: wait for rate-limit scheduling

Prevent notification scheduling from racing phone SENT events in the integration suite. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 068b4956-94f1-4bbf-af3f-809a3a53d43e
AchoArnold · Sep 3, 2026 · Sep 3, 2026 · Sep 3, 2026 · Sep 3, 2026 · Sep 3, 2026
commit 06840e2a7de4237f60b1b39e6578817d7f102163
diff --git a/tests/integration_test.go b/tests/integration_test.go
@@ -199,6 +199,8 @@ func TestSendSMS_RateLimit(t *testing.T) {
 	t.Logf("FCM push gap: %dms", gapMs)
 	assert.GreaterOrEqual(t, gapMs, int64(5500), "rate limit gap should be >= 5500ms (6s minus timing tolerance), got %dms", gapMs)
 
+	pollMessageStatus(ctx, t, msgID1, "scheduled", 15*time.Second)
+	pollMessageStatus(ctx, t, msgID2, "scheduled", 15*time.Second)
 	fireEvent(ctx, t, phone.PhoneAPIKey, msgID1, "SENT")
 	pollMessageStatus(ctx, t, msgID1, "sent", 15*time.Second)
 	fireEvent(ctx, t, phone.PhoneAPIKey, msgID2, "SENT")