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worker_pool_test.go
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package wsinternal_test
import (
"sync"
"testing"
"time"
"github.com/XDoubleU/essentia/internal/wsinternal"
"github.com/XDoubleU/essentia/pkg/logging"
"github.com/google/uuid"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type TestSubscriber struct {
id string
output string
outputMu *sync.RWMutex
}
func NewTestSubscriber() *TestSubscriber {
return &TestSubscriber{
id: uuid.NewString(),
output: "",
outputMu: &sync.RWMutex{},
}
}
func (sub TestSubscriber) ID() string {
return sub.id
}
func (sub *TestSubscriber) OnSubscribeCallback() any {
return nil
}
func (sub *TestSubscriber) OnEventCallback(event any) {
sub.outputMu.Lock()
defer sub.outputMu.Unlock()
if v, ok := event.(string); ok {
sub.output = v
}
}
func (sub *TestSubscriber) Output() string {
sub.outputMu.RLock()
defer sub.outputMu.RUnlock()
return sub.output
}
const sleep = 100 * time.Millisecond
func TestBasic(t *testing.T) {
logger := logging.NewNopLogger()
wp := wsinternal.NewWorkerPool(logger, 1, 10)
tSub := NewTestSubscriber()
wp.AddSubscriber(tSub)
wp.Start()
time.Sleep(sleep)
require.True(t, wp.Active())
// test already started
wp.Start()
time.Sleep(sleep)
require.True(t, wp.Active())
event := "Hello, World!"
wp.EnqueueEvent(event)
time.Sleep(sleep)
assert.Equal(t, event, tSub.Output())
// test manual stop
wp.Stop()
time.Sleep(sleep)
assert.Equal(t, false, wp.Active())
wp.RemoveSubscriber(tSub)
time.Sleep(sleep)
assert.Equal(t, false, wp.Active())
}
func TestMoreWorkersThanSubs(t *testing.T) {
logger := logging.NewNopLogger()
wp := wsinternal.NewWorkerPool(logger, 2, 10)
tSub := NewTestSubscriber()
wp.AddSubscriber(tSub)
wp.Start()
time.Sleep(sleep)
require.True(t, wp.Active())
event := "Hello, World!"
wp.EnqueueEvent(event)
time.Sleep(sleep)
assert.Equal(t, event, tSub.Output())
wp.RemoveSubscriber(tSub)
time.Sleep(sleep)
assert.Equal(t, false, wp.Active())
}
func TestAddRemoveSubscriberWhileWorkersActive(t *testing.T) {
logger := logging.NewNopLogger()
wp := wsinternal.NewWorkerPool(logger, 2, 10)
tSub := NewTestSubscriber()
wp.AddSubscriber(tSub)
wp.Start()
time.Sleep(sleep)
require.True(t, wp.Active())
tSub2 := NewTestSubscriber()
wp.AddSubscriber(tSub2)
event := "Hello, World!"
wp.EnqueueEvent(event)
time.Sleep(sleep)
assert.Equal(t, event, tSub.Output())
assert.Equal(t, event, tSub2.Output())
wp.RemoveSubscriber(tSub2)
time.Sleep(sleep)
assert.Equal(t, true, wp.Active())
wp.RemoveSubscriber(tSub)
time.Sleep(sleep)
assert.Equal(t, false, wp.Active())
}
func work(t *testing.T, wp *wsinternal.WorkerPool, nr int) {
t.Logf("Run %d", nr)
tSub := NewTestSubscriber()
wp.AddSubscriber(tSub)
wp.Start()
time.Sleep(sleep)
require.True(t, wp.Active())
event := "Hello, World!"
wp.EnqueueEvent(event)
time.Sleep(sleep)
assert.Equal(t, event, tSub.Output())
wp.RemoveSubscriber(tSub)
time.Sleep(sleep)
assert.Equal(t, false, wp.Active())
}
func TestToggleWork(t *testing.T) {
logger := logging.NewNopLogger()
wp := wsinternal.NewWorkerPool(logger, 1, 10)
work(t, wp, 1)
work(t, wp, 2)
}