initial commit

tests/integration/test_inactivity_warning_email_idempotency_test.go

@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package integration
+
+import (
+	"testing"
+	"time"
+)
+
+// TestInactivityWarningEmailIdempotency verifies that the inactivity warning
+// email is only sent once to a user, and subsequent runs of the worker do not
+// send duplicate warnings within the 30-day grace period.
+func TestInactivityWarningEmailIdempotency(t *testing.T) {
+	client := newTestClient(t)
+
+	user := createTestAccount(t, client)
+
+	threeYearsAgo := time.Now().AddDate(-3, 0, 0)
+	setLastActiveAt(t, client, user.UserID, threeYearsAgo)
+
+	clearTestEmails(t, client)
+
+	t.Log("Running inactivity worker - first time")
+	workerResp1 := triggerInactivityWorker(t, client)
+
+	if workerResp1.WarningsSent != 1 {
+		t.Errorf("expected 1 warning sent on first run, got %d", workerResp1.WarningsSent)
+	}
+
+	if workerResp1.DeletionsScheduled != 0 {
+		t.Errorf("expected 0 deletions scheduled on first run, got %d", workerResp1.DeletionsScheduled)
+	}
+
+	emails1 := getTestEmails(t, client)
+	if len(emails1) != 1 {
+		t.Errorf("expected 1 email sent after first run, got %d", len(emails1))
+	}
+	const expectedWarningSubject = "Your Fluxer account will be deleted due to inactivity"
+	if len(emails1) > 0 && emails1[0].Subject != expectedWarningSubject {
+		t.Errorf("expected inactivity warning email subject %q, got %q", expectedWarningSubject, emails1[0].Subject)
+	}
+
+	clearTestEmails(t, client)
+
+	t.Log("Running inactivity worker - second time")
+	workerResp2 := triggerInactivityWorker(t, client)
+
+	if workerResp2.WarningsSent > 0 {
+		t.Errorf("expected 0 warnings sent on second run (idempotency), got %d", workerResp2.WarningsSent)
+	}
+
+	if workerResp2.DeletionsScheduled > 0 {
+		t.Errorf("expected 0 deletions scheduled on second run, got %d", workerResp2.DeletionsScheduled)
+	}
+
+	emails2 := getTestEmails(t, client)
+	if len(emails2) > 0 {
+		t.Errorf("expected no emails sent on second run (idempotency), got %d", len(emails2))
+	}
+
+	t.Log("Inactivity warning email idempotency test passed")
+}