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moby--moby/events/events_test.go

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package events
import (
"bytes"
"encoding/json"
"fmt"
"io"
"testing"
"time"
"github.com/docker/docker/engine"
"github.com/docker/docker/utils"
)
func TestEventsPublish(t *testing.T) {
e := New()
l1 := make(chan *utils.JSONMessage)
l2 := make(chan *utils.JSONMessage)
e.subscribe(l1)
e.subscribe(l2)
count := e.subscribersCount()
if count != 2 {
t.Fatalf("Must be 2 subscribers, got %d", count)
}
go e.log("test", "cont", "image")
select {
case msg := <-l1:
if len(e.events) != 1 {
t.Fatalf("Must be only one event, got %d", len(e.events))
}
if msg.Status != "test" {
t.Fatalf("Status should be test, got %s", msg.Status)
}
if msg.ID != "cont" {
t.Fatalf("ID should be cont, got %s", msg.ID)
}
if msg.From != "image" {
t.Fatalf("From should be image, got %s", msg.From)
}
case <-time.After(1 * time.Second):
t.Fatal("Timeout waiting for broadcasted message")
}
select {
case msg := <-l2:
if len(e.events) != 1 {
t.Fatalf("Must be only one event, got %d", len(e.events))
}
if msg.Status != "test" {
t.Fatalf("Status should be test, got %s", msg.Status)
}
if msg.ID != "cont" {
t.Fatalf("ID should be cont, got %s", msg.ID)
}
if msg.From != "image" {
t.Fatalf("From should be image, got %s", msg.From)
}
case <-time.After(1 * time.Second):
t.Fatal("Timeout waiting for broadcasted message")
}
}
func TestEventsPublishTimeout(t *testing.T) {
e := New()
l := make(chan *utils.JSONMessage)
e.subscribe(l)
c := make(chan struct{})
go func() {
e.log("test", "cont", "image")
close(c)
}()
select {
case <-c:
case <-time.After(time.Second):
t.Fatal("Timeout publishing message")
}
}
func TestLogEvents(t *testing.T) {
e := New()
eng := engine.New()
if err := e.Install(eng); err != nil {
t.Fatal(err)
}
for i := 0; i < eventsLimit+16; i++ {
action := fmt.Sprintf("action_%d", i)
id := fmt.Sprintf("cont_%d", i)
from := fmt.Sprintf("image_%d", i)
job := eng.Job("log", action, id, from)
if err := job.Run(); err != nil {
t.Fatal(err)
}
}
time.Sleep(50 * time.Millisecond)
if len(e.events) != eventsLimit {
t.Fatalf("Must be %d events, got %d", eventsLimit, len(e.events))
}
job := eng.Job("events")
job.SetenvInt64("since", 1)
job.SetenvInt64("until", time.Now().Unix())
buf := bytes.NewBuffer(nil)
job.Stdout.Add(buf)
if err := job.Run(); err != nil {
t.Fatal(err)
}
buf = bytes.NewBuffer(buf.Bytes())
dec := json.NewDecoder(buf)
var msgs []utils.JSONMessage
for {
var jm utils.JSONMessage
if err := dec.Decode(&jm); err != nil {
if err == io.EOF {
break
}
t.Fatal(err)
}
msgs = append(msgs, jm)
}
if len(msgs) != eventsLimit {
t.Fatalf("Must be %d events, got %d", eventsLimit, len(msgs))
}
first := msgs[0]
if first.Status != "action_16" {
t.Fatalf("First action is %s, must be action_15", first.Status)
}
last := msgs[len(msgs)-1]
if last.Status != "action_79" {
t.Fatalf("First action is %s, must be action_79", first.Status)
}
}
func TestEventsCountJob(t *testing.T) {
e := New()
eng := engine.New()
if err := e.Install(eng); err != nil {
t.Fatal(err)
}
l1 := make(chan *utils.JSONMessage)
l2 := make(chan *utils.JSONMessage)
e.subscribe(l1)
e.subscribe(l2)
job := eng.Job("subscribers_count")
env, _ := job.Stdout.AddEnv()
if err := job.Run(); err != nil {
t.Fatal(err)
}
count := env.GetInt("count")
if count != 2 {
t.Fatalf("There must be 2 subscribers, got %d", count)
}
}