restic/vendor/cloud.google.com/go/pubsub/topic_test.go

188 lines
4.7 KiB
Go

// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package pubsub
import (
"net"
"reflect"
"testing"
"time"
"golang.org/x/net/context"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
pubsubpb "google.golang.org/genproto/googleapis/pubsub/v1"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
)
type topicListService struct {
service
topics []string
err error
t *testing.T // for error logging.
}
func (s *topicListService) newNextStringFunc() nextStringFunc {
return func() (string, error) {
if len(s.topics) == 0 {
return "", iterator.Done
}
tn := s.topics[0]
s.topics = s.topics[1:]
return tn, s.err
}
}
func (s *topicListService) listProjectTopics(ctx context.Context, projName string) nextStringFunc {
if projName != "projects/projid" {
s.t.Fatalf("unexpected call: projName: %q", projName)
return nil
}
return s.newNextStringFunc()
}
func checkTopicListing(t *testing.T, want []string) {
s := &topicListService{topics: want, t: t}
c := &Client{projectID: "projid", s: s}
topics, err := slurpTopics(c.Topics(context.Background()))
if err != nil {
t.Errorf("error listing topics: %v", err)
}
got := topicNames(topics)
if !reflect.DeepEqual(got, want) {
t.Errorf("topic list: got: %v, want: %v", got, want)
}
if len(s.topics) != 0 {
t.Errorf("outstanding topics: %v", s.topics)
}
}
// All returns the remaining topics from this iterator.
func slurpTopics(it *TopicIterator) ([]*Topic, error) {
var topics []*Topic
for {
switch topic, err := it.Next(); err {
case nil:
topics = append(topics, topic)
case iterator.Done:
return topics, nil
default:
return nil, err
}
}
}
func TestTopicID(t *testing.T) {
const id = "id"
serv := &topicListService{
topics: []string{"projects/projid/topics/t1", "projects/projid/topics/t2"},
t: t,
}
c := &Client{projectID: "projid", s: serv}
s := c.Topic(id)
if got, want := s.ID(), id; got != want {
t.Errorf("Token.ID() = %q; want %q", got, want)
}
want := []string{"t1", "t2"}
topics, err := slurpTopics(c.Topics(context.Background()))
if err != nil {
t.Errorf("error listing topics: %v", err)
}
for i, topic := range topics {
if got, want := topic.ID(), want[i]; got != want {
t.Errorf("Token.ID() = %q; want %q", got, want)
}
}
}
func TestListTopics(t *testing.T) {
checkTopicListing(t, []string{
"projects/projid/topics/t1",
"projects/projid/topics/t2",
"projects/projid/topics/t3",
"projects/projid/topics/t4"})
}
func TestListCompletelyEmptyTopics(t *testing.T) {
var want []string
checkTopicListing(t, want)
}
func TestStopPublishOrder(t *testing.T) {
// Check that Stop doesn't panic if called before Publish.
// Also that Publish after Stop returns the right error.
ctx := context.Background()
c := &Client{projectID: "projid"}
topic := c.Topic("t")
topic.Stop()
r := topic.Publish(ctx, &Message{})
_, err := r.Get(ctx)
if err != errTopicStopped {
t.Errorf("got %v, want errTopicStopped", err)
}
}
func TestPublishTimeout(t *testing.T) {
ctx := context.Background()
serv := grpc.NewServer()
pubsubpb.RegisterPublisherServer(serv, &alwaysFailPublish{})
lis, err := net.Listen("tcp", "localhost:0")
if err != nil {
t.Fatal(err)
}
go serv.Serve(lis)
conn, err := grpc.Dial(lis.Addr().String(), grpc.WithInsecure())
if err != nil {
t.Fatal(err)
}
s, err := newPubSubService(context.Background(), []option.ClientOption{option.WithGRPCConn(conn)})
if err != nil {
t.Fatal(err)
}
c := &Client{s: s}
topic := c.Topic("t")
topic.PublishSettings.Timeout = 3 * time.Second
r := topic.Publish(ctx, &Message{})
defer topic.Stop()
select {
case <-r.Ready():
_, err = r.Get(ctx)
if err != context.DeadlineExceeded {
t.Fatalf("got %v, want context.DeadlineExceeded", err)
}
case <-time.After(2 * topic.PublishSettings.Timeout):
t.Fatal("timed out")
}
}
type alwaysFailPublish struct {
pubsubpb.PublisherServer
}
func (s *alwaysFailPublish) Publish(ctx context.Context, req *pubsubpb.PublishRequest) (*pubsubpb.PublishResponse, error) {
return nil, grpc.Errorf(codes.Unavailable, "try again")
}
func topicNames(topics []*Topic) []string {
var names []string
for _, topic := range topics {
names = append(names, topic.name)
}
return names
}