// TestQueue validates the behaviour of que api.
func TestQueue(t *testing.T) {
t.Logf("Should be able to use a argument selective queue")
{
t.Logf("\tWhen giving a mque.Que and a string only allowed constraint")
{
passed := make(chan int)
failed := make(chan int)
q := mque.New()
q.Q(func(letter string) {
go func() { passed <- 1 }()
})
q.Q(func(item int) {
go func() { failed <- 1 }()
})
q.Run("letter")
select {
case <-passed:
t.Logf("\t%s\tShould have received a string", succeedMark)
case <-failed:
t.Errorf("\t%s\tShould have received a string", failedMark)
}
}
t.Logf("\tWhen giving a mque.Que and a int only allowed constraint")
{
passed := make(chan int)
failed := make(chan int)
q := mque.New()
q.Q(func(letter string) {
go func() { failed <- 1 }()
})
q.Q(func(item int) {
go func() { passed <- 1 }()
})
q.Run(30)
select {
case <-failed:
t.Fatalf("\t%s\tShould have received a integer", failedMark)
case <-passed:
t.Logf("\t%s\tShould have received a integer", succeedMark)
}
}
}
}
func BenchmarkQueueWithMultitypes(b *testing.B) {
b.ResetTimer()
defer b.ReportAllocs()
q := mque.New()
q.Q(func(item string) {})
q.Q(func(item int) {})
for i := 0; i < b.N; i++ {
q.Run(i)
}
}
// TestQueueEnd validates the behaviour of que subscriber End call.
func TestQueueEnd(t *testing.T) {
t.Logf("Should be able to use a argument selective queue")
{
t.Logf("\tWhen needing to unsubscribe from a queue")
{
var count int
var ended bool
q := mque.New()
q.Q(func(item int) {
count++
})
sub := q.Q(func(item int) {
count++
}, func() {
ended = true
})
q.Run(20)
sub.End()
q.Run(40)
if count <= 2 || count >= 4 {
t.Fatalf("\t%s\tShould have received only two events", failedMark)
}
t.Logf("\t%s\tShould have received only two events", succeedMark)
if !ended {
t.Fatalf("\t%s\tShould have ended subscriber", failedMark)
}
t.Logf("\t%s\tShould have ended subscriber", succeedMark)
}
}
}
package dispatch
import (
"github.com/go-humble/detect"
"github.com/gu-io/gu/dispatch/mque"
)
//==============================================================================
// history provides a central URL coordinator for gu.
var history *HistoryProvider
// dispatch provides a default dispatcher for listening to events.
var dispatch = mque.New()
// Subscribe adds a new listener to the dispatcher.
func Subscribe(q interface{}, end ...func()) mque.End {
return dispatch.Q(q, end...)
}
// Dispatch emits a event into the dispatch callback listeners.
func Dispatch(q interface{}) {
dispatch.Run(q)
}
//==============================================================================
// init intializes the internal state management variables used in dispatch.
func init() {
if detect.IsBrowser() {
history = History(HashSequencer)
