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// Copyright 2018 Google LLC
//
// 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_test
import (
"context"
"strconv"
"sync"
"testing"
"cloud.google.com/go/pubsub"
"cloud.google.com/go/pubsub/pstest"
"google.golang.org/api/option"
"google.golang.org/grpc"
)
func TestPSTest(t *testing.T) {
t.Parallel()
ctx := context.Background()
srv := pstest.NewServer()
defer srv.Close()
conn, err := grpc.Dial(srv.Addr, grpc.WithInsecure())
if err != nil {
panic(err)
}
defer conn.Close()
client, err := pubsub.NewClient(ctx, "some-project", option.WithGRPCConn(conn))
if err != nil {
panic(err)
}
defer client.Close()
topic, err := client.CreateTopic(ctx, "test-topic")
if err != nil {
panic(err)
}
sub, err := client.CreateSubscription(ctx, "sub-name", pubsub.SubscriptionConfig{Topic: topic})
if err != nil {
panic(err)
}
go func() {
for i := 0; i < 10; i++ {
srv.Publish("projects/some-project/topics/test-topic", []byte(strconv.Itoa(i)), nil)
}
}()
ctx, cancel := context.WithCancel(ctx)
var mu sync.Mutex
count := 0
err = sub.Receive(ctx, func(ctx context.Context, m *pubsub.Message) {
mu.Lock()
count++
if count >= 10 {
cancel()
}
mu.Unlock()
m.Ack()
})
if err != nil {
panic(err)
}
}