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minio/pkg/pubsub/pubsub_test.go

90 lines
2.3 KiB

/*
* MinIO Cloud Storage, (C) 2019 MinIO, Inc.
*
* 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 (
"fmt"
"testing"
"time"
)
func TestSubscribe(t *testing.T) {
ps := New()
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
doneCh := make(chan struct{})
defer close(doneCh)
ps.Subscribe(ch1, doneCh, nil)
ps.Subscribe(ch2, doneCh, nil)
ps.Lock()
defer ps.Unlock()
if len(ps.subs) != 2 {
t.Errorf("expected 2 subscribers")
}
}
func TestUnsubscribe(t *testing.T) {
ps := New()
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
doneCh1 := make(chan struct{})
doneCh2 := make(chan struct{})
ps.Subscribe(ch1, doneCh1, nil)
ps.Subscribe(ch2, doneCh2, nil)
close(doneCh1)
// Allow for the above statement to take effect.
time.Sleep(100 * time.Millisecond)
ps.Lock()
if len(ps.subs) != 1 {
t.Errorf("expected 1 subscriber")
}
ps.Unlock()
close(doneCh2)
}
func TestPubSub(t *testing.T) {
ps := New()
ch1 := make(chan interface{}, 1)
doneCh1 := make(chan struct{})
defer close(doneCh1)
ps.Subscribe(ch1, doneCh1, func(entry interface{}) bool { return true })
val := "hello"
ps.Publish(val)
msg := <-ch1
if msg != "hello" {
t.Errorf(fmt.Sprintf("expected %s , found %s", val, msg))
}
}
func TestMultiPubSub(t *testing.T) {
ps := New()
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
doneCh := make(chan struct{})
defer close(doneCh)
ps.Subscribe(ch1, doneCh, func(entry interface{}) bool { return true })
ps.Subscribe(ch2, doneCh, func(entry interface{}) bool { return true })
val := "hello"
ps.Publish(val)
msg1 := <-ch1
msg2 := <-ch2
if msg1 != "hello" && msg2 != "hello" {
t.Errorf(fmt.Sprintf("expected both subscribers to have%s , found %s and %s", val, msg1, msg2))
}
}