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go-chasquid-smtp/internal/queue/queue_test.go
Alberto Bertogli 0611b7a7fc test: Add small miscellaneous tests
This patch extends various packages and integration tests, increasing
test coverage. They're small enough that it's not worth splitting them
up, as it would add a lot of noise to the history.
2018-03-02 19:37:37 +00:00

342 lines
8.2 KiB
Go

package queue
import (
"bytes"
"fmt"
"strings"
"sync"
"testing"
"time"
"blitiri.com.ar/go/chasquid/internal/aliases"
"blitiri.com.ar/go/chasquid/internal/set"
"blitiri.com.ar/go/chasquid/internal/testlib"
)
// Test courier. Delivery is done by sending on a channel, so users have fine
// grain control over the results.
type ChanCourier struct {
requests chan deliverRequest
results chan error
}
type deliverRequest struct {
from string
to string
data []byte
}
func (cc *ChanCourier) Deliver(from string, to string, data []byte) (error, bool) {
cc.requests <- deliverRequest{from, to, data}
return <-cc.results, false
}
func newChanCourier() *ChanCourier {
return &ChanCourier{
requests: make(chan deliverRequest),
results: make(chan error),
}
}
// Courier for test purposes. Never fails, and always remembers everything.
type TestCourier struct {
wg sync.WaitGroup
requests []*deliverRequest
reqFor map[string]*deliverRequest
sync.Mutex
}
func (tc *TestCourier) Deliver(from string, to string, data []byte) (error, bool) {
defer tc.wg.Done()
dr := &deliverRequest{from, to, data}
tc.Lock()
tc.requests = append(tc.requests, dr)
tc.reqFor[to] = dr
tc.Unlock()
return nil, false
}
func newTestCourier() *TestCourier {
return &TestCourier{
reqFor: map[string]*deliverRequest{},
}
}
func TestBasic(t *testing.T) {
dir := testlib.MustTempDir(t)
defer testlib.RemoveIfOk(t, dir)
localC := newTestCourier()
remoteC := newTestCourier()
q := New(dir, set.NewString("loco"), aliases.NewResolver(),
localC, remoteC)
localC.wg.Add(2)
remoteC.wg.Add(1)
id, err := q.Put("from", []string{"am@loco", "x@remote", "nodomain"}, []byte("data"))
if err != nil {
t.Fatalf("Put: %v", err)
}
if len(id) < 6 {
t.Errorf("short ID: %v", id)
}
localC.wg.Wait()
remoteC.wg.Wait()
// Make sure the delivered items leave the queue.
for d := time.Now().Add(2 * time.Second); time.Now().Before(d); {
if q.Len() == 0 {
break
}
time.Sleep(20 * time.Millisecond)
}
if q.Len() != 0 {
t.Fatalf("%d items not removed from the queue after delivery", q.Len())
}
cases := []struct {
courier *TestCourier
expectedTo string
}{
{localC, "nodomain"},
{localC, "am@loco"},
{remoteC, "x@remote"},
}
for _, c := range cases {
req := c.courier.reqFor[c.expectedTo]
if req == nil {
t.Errorf("missing request for %q", c.expectedTo)
continue
}
if req.from != "from" || req.to != c.expectedTo ||
!bytes.Equal(req.data, []byte("data")) {
t.Errorf("wrong request for %q: %v", c.expectedTo, req)
}
}
}
func TestDSNOnTimeout(t *testing.T) {
localC := newTestCourier()
remoteC := newTestCourier()
dir := testlib.MustTempDir(t)
defer testlib.RemoveIfOk(t, dir)
q := New(dir, set.NewString("loco"), aliases.NewResolver(),
localC, remoteC)
// Insert an expired item in the queue.
item := &Item{
Message: Message{
ID: <-newID,
From: fmt.Sprintf("from@loco"),
Rcpt: []*Recipient{
{"to@to", Recipient_EMAIL, Recipient_PENDING, "err", "to@to"}},
Data: []byte("data"),
},
CreatedAt: time.Now().Add(-24 * time.Hour),
}
q.q[item.ID] = item
err := item.WriteTo(q.path)
if err != nil {
t.Errorf("failed to write item: %v", err)
}
// Exercise DumpString while at it.
q.DumpString()
// Launch the sending loop, expect 1 local delivery (the DSN).
localC.wg.Add(1)
go item.SendLoop(q)
localC.wg.Wait()
req := localC.reqFor["from@loco"]
if req == nil {
t.Fatal("missing DSN")
}
if req.from != "<>" || req.to != "from@loco" ||
!strings.Contains(string(req.data), "X-Failed-Recipients: to@to,") {
t.Errorf("wrong DSN: %q", string(req.data))
}
}
func TestAliases(t *testing.T) {
localC := newTestCourier()
remoteC := newTestCourier()
dir := testlib.MustTempDir(t)
defer testlib.RemoveIfOk(t, dir)
q := New(dir, set.NewString("loco"), aliases.NewResolver(),
localC, remoteC)
q.aliases.AddDomain("loco")
q.aliases.AddAliasForTesting("ab@loco", "pq@loco", aliases.EMAIL)
q.aliases.AddAliasForTesting("ab@loco", "rs@loco", aliases.EMAIL)
q.aliases.AddAliasForTesting("cd@loco", "ata@hualpa", aliases.EMAIL)
// Note the pipe aliases are tested below, as they don't use the couriers
// and it can be quite inconvenient to test them in this way.
localC.wg.Add(2)
remoteC.wg.Add(1)
_, err := q.Put("from", []string{"ab@loco", "cd@loco"}, []byte("data"))
if err != nil {
t.Fatalf("Put: %v", err)
}
localC.wg.Wait()
remoteC.wg.Wait()
cases := []struct {
courier *TestCourier
expectedTo string
}{
{localC, "pq@loco"},
{localC, "rs@loco"},
{remoteC, "ata@hualpa"},
}
for _, c := range cases {
req := c.courier.reqFor[c.expectedTo]
if req == nil {
t.Errorf("missing request for %q", c.expectedTo)
continue
}
if req.from != "from" || req.to != c.expectedTo ||
!bytes.Equal(req.data, []byte("data")) {
t.Errorf("wrong request for %q: %v", c.expectedTo, req)
}
}
}
// Dumb courier, for when we just want to return directly.
type DumbCourier struct{}
func (c DumbCourier) Deliver(from string, to string, data []byte) (error, bool) {
return nil, false
}
var dumbCourier = DumbCourier{}
func TestFullQueue(t *testing.T) {
dir := testlib.MustTempDir(t)
defer testlib.RemoveIfOk(t, dir)
q := New(dir, set.NewString(), aliases.NewResolver(),
dumbCourier, dumbCourier)
// Force-insert maxQueueSize items in the queue.
oneID := ""
for i := 0; i < maxQueueSize; i++ {
item := &Item{
Message: Message{
ID: <-newID,
From: fmt.Sprintf("from-%d", i),
Rcpt: []*Recipient{
{"to", Recipient_EMAIL, Recipient_PENDING, "", ""}},
Data: []byte("data"),
},
CreatedAt: time.Now(),
}
q.q[item.ID] = item
oneID = item.ID
}
// This one should fail due to the queue being too big.
id, err := q.Put("from", []string{"to"}, []byte("data-qf"))
if err != errQueueFull {
t.Errorf("Not failed as expected: %v - %v", id, err)
}
// Remove one, and try again: it should succeed.
// Write it first so we don't get complaints about the file not existing
// (as we did not all the items properly).
q.q[oneID].WriteTo(q.path)
q.Remove(oneID)
id, err = q.Put("from", []string{"to"}, []byte("data"))
if err != nil {
t.Errorf("Put: %v", err)
}
q.Remove(id)
}
func TestPipes(t *testing.T) {
dir := testlib.MustTempDir(t)
defer testlib.RemoveIfOk(t, dir)
q := New(dir, set.NewString("loco"), aliases.NewResolver(),
dumbCourier, dumbCourier)
item := &Item{
Message: Message{
ID: <-newID,
From: "from",
Rcpt: []*Recipient{
{"true", Recipient_PIPE, Recipient_PENDING, "", ""}},
Data: []byte("data"),
},
CreatedAt: time.Now(),
}
if err, _ := item.deliver(q, item.Rcpt[0]); err != nil {
t.Errorf("pipe delivery failed: %v", err)
}
}
func TestNextDelay(t *testing.T) {
cases := []struct{ since, min time.Duration }{
{10 * time.Second, 1 * time.Minute},
{3 * time.Minute, 5 * time.Minute},
{7 * time.Minute, 10 * time.Minute},
{15 * time.Minute, 20 * time.Minute},
{30 * time.Minute, 20 * time.Minute},
}
for _, c := range cases {
// Repeat each case a few times to exercise the perturbation a bit.
for i := 0; i < 10; i++ {
delay := nextDelay(time.Now().Add(-c.since))
max := c.min + 1*time.Minute
if delay < c.min || delay > max {
t.Errorf("since:%v expected [%v, %v], got %v",
c.since, c.min, max, delay)
}
}
}
}
func TestSerialization(t *testing.T) {
dir := testlib.MustTempDir(t)
defer testlib.RemoveIfOk(t, dir)
// Save an item in the queue directory.
item := &Item{
Message: Message{
ID: <-newID,
From: fmt.Sprintf("from@loco"),
Rcpt: []*Recipient{
{"to@to", Recipient_EMAIL, Recipient_PENDING, "err", "to@to"}},
Data: []byte("data"),
},
CreatedAt: time.Now().Add(-1 * time.Hour),
}
err := item.WriteTo(dir)
if err != nil {
t.Errorf("failed to write item: %v", err)
}
// Create the queue; should load the
remoteC := newTestCourier()
remoteC.wg.Add(1)
q := New(dir, set.NewString("loco"), aliases.NewResolver(),
dumbCourier, remoteC)
q.Load()
// Launch the sending loop, expect 1 remote delivery for the item we saved.
remoteC.wg.Wait()
req := remoteC.reqFor["to@to"]
if req == nil {
t.Fatal("email not delivered")
}
if req.from != "from@loco" || req.to != "to@to" {
t.Errorf("wrong email: %v", req)
}
}