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package queue

import (

"testing"

"time"

"github.com/umailserver/umailserver/internal/db"

)

// --- sendSuccessDSN tests ---

func TestManager_SendSuccessDSN_ZeroRet(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

mgr := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

MessagePath: dataDir + "/msg",

Ret: 0, // DSNRetFull - wants original message

}

// sendSuccessDSN is called internally when message is delivered

// We just verify the function exists and doesn't panic

mgr.sendSuccessDSN(entry)

}

// --- createFallbackBounce tests ---

func TestManager_CreateFallbackBounce(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

LastError: "550 No such user",

CreatedAt: testTime(),

}

originalMsg := []byte("From: sender\r\nTo: recipient\r\nSubject: Test\r\n\r\nBody")

result := m.createFallbackBounce(entry, originalMsg)

if len(result) == 0 {

t.Fatal("Expected non-empty bounce message")

}

}

func TestManager_CreateFallbackBounce_EmptyOriginal(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

LastError: "Connection timeout",

CreatedAt: testTime(),

}

result := m.createFallbackBounce(entry, nil)

if len(result) == 0 {

t.Fatal("Expected non-empty bounce message")

}

}

func TestManager_CreateFallbackBounce_LongError(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

LastError: "451 4.4.2 DNS zone timeout exceeded - Please try again later",

CreatedAt: testTime(),

}

result := m.createFallbackBounce(entry, []byte("original"))

if len(result) == 0 {

t.Fatal("Expected non-empty bounce message")

}

}

func TestManager_CreateFallbackBounce_MultipleRecipients(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient1@example.com", "recipient2@example.com"},

LastError: "550 mailbox full",

CreatedAt: testTime(),

}

result := m.createFallbackBounce(entry, nil)

if len(result) == 0 {

t.Fatal("Expected non-empty bounce message")

}

}

func TestManager_CreateFallbackBounce_NoError(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

LastError: "",

CreatedAt: testTime(),

}

result := m.createFallbackBounce(entry, nil)

if len(result) == 0 {

t.Fatal("Expected non-empty bounce message")

}

}

// --- generateBounce coverage ---

func TestManager_GenerateBounce_RetFull(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

MessagePath: dataDir + "/msg",

Ret: 0, // DSNRetFull

LastError: "550 mailbox full",

CreatedAt: testTime(),

}

m.generateBounce(entry)

}

func TestManager_GenerateBounce_RetHeaders(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

MessagePath: dataDir + "/msg",

Ret: 1, // DSNRetHeaders

LastError: "550 user unknown",

CreatedAt: testTime(),

}

m.generateBounce(entry)

}

func TestManager_GenerateBounce_RetNotFound(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

entry := &db.QueueEntry{

From: "sender@example.com",

To: []string{"recipient@example.com"},

MessagePath: dataDir + "/msg",

Ret: 999, // Invalid - treated as no original

LastError: "550 unknown error",

CreatedAt: testTime(),

}

m.generateBounce(entry)

}

// --- SetWebhookTrigger ---

type mockWebhookTrigger struct {

triggered bool

}

func (m *mockWebhookTrigger) Trigger(eventType string, data interface{}) {

m.triggered = true

}

func TestManager_SetWebhookTrigger(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

wh := &mockWebhookTrigger{}

m.SetWebhookTrigger(wh)

if m.webhook == nil {

t.Fatal("webhook not set")

}

m.webhook.Trigger("test", nil)

if !wh.triggered {

t.Error("webhook was not triggered")

}

}

// --- getStats ---

func TestManager_GetStats_VariousStatuses(t *testing.T) {

dataDir := t.TempDir()

dbPath := dataDir + "/test.db"

database, err := db.Open(dbPath)

if err != nil {

t.Fatalf("Open: %v", err)

}

defer database.Close()

m := NewManager(database, nil, dataDir, nil)

// Enqueue entries with different statuses

statuses := []string{"pending", "sending", "failed", "delivered", "bounced"}

for _, status := range statuses {

entry := &db.QueueEntry{

ID: "msg-" + status,

From: "sender@example.com",

To: []string{"recipient@example.com"},

Status: status,

CreatedAt: time.Now(),

NextRetry: time.Now(),

}

_ = database.Enqueue(entry)

}

stats, err := m.GetStats()

if err != nil {

t.Fatalf("GetStats: %v", err)

}

if stats.Total != 5 {

t.Errorf("expected total=5, got %d", stats.Total)

}

if stats.Pending != 1 {

t.Errorf("expected pending=1, got %d", stats.Pending)

}

if stats.Sending != 1 {

t.Errorf("expected sending=1, got %d", stats.Sending)

}

if stats.Failed != 1 {

t.Errorf("expected failed=1, got %d", stats.Failed)

}

if stats.Delivered != 1 {

t.Errorf("expected delivered=1, got %d", stats.Delivered)

}

if stats.Bounced != 1 {

t.Errorf("expected bounced=1, got %d", stats.Bounced)

}

}

// --- ParseMDNAddress ---

func TestParseMDNAddress_Empty(t *testing.T) {

_, err := ParseMDNAddress("")

if err == nil {

t.Error("expected error for empty address")

}

}

func TestParseMDNAddress_InvalidWithAngle(t *testing.T) {

result, err := ParseMDNAddress("invalid <broken")

if err != nil {

t.Fatalf("unexpected error: %v", err)

}

if result.Original != "invalid <broken" {

t.Errorf("expected original to be preserved, got %s", result.Original)

}

}

func TestParseMDNAddress_InvalidWithoutAngle(t *testing.T) {

result, err := ParseMDNAddress("not-an-email")

if err != nil {

t.Fatalf("unexpected error: %v", err)

}

if result.Original != "not-an-email" {

t.Errorf("expected original to be preserved, got %s", result.Original)

}

}

// --- helper ---

func testTime() time.Time {

t, _ := time.Parse(time.RFC1123Z, "Mon, 01 Jan 2024 12:00:00 +0000")

return t

}