ingress-nginx-helm/vendor/github.com/eapache/channels/overflowing_channel_test.go
Manuel Alejandro de Brito Fontes 9bcb5b08ea
Use a ring channel to avoid blocking write of events (#2082)
* Use a ring channel to avoid blocking write of events

* Add eapache/channels dependency
2018-02-13 17:46:18 -08:00

49 lines
1.1 KiB
Go

package channels
import "testing"
func TestOverflowingChannel(t *testing.T) {
var ch Channel
ch = NewOverflowingChannel(Infinity) // yes this is rather silly, but it should work
testChannel(t, "infinite overflowing channel", ch)
ch = NewOverflowingChannel(None)
go func() {
for i := 0; i < 1000; i++ {
ch.In() <- i
}
ch.Close()
}()
prev := -1
for i := range ch.Out() {
if prev >= i.(int) {
t.Fatal("overflowing channel prev", prev, "but got", i.(int))
}
}
ch = NewOverflowingChannel(10)
for i := 0; i < 1000; i++ {
ch.In() <- i
}
ch.Close()
for i := 0; i < 10; i++ {
val := <-ch.Out()
if i != val.(int) {
t.Fatal("overflowing channel expected", i, "but got", val.(int))
}
}
if val, open := <-ch.Out(); open == true {
t.Fatal("overflowing channel expected closed but got", val)
}
ch = NewOverflowingChannel(None)
ch.In() <- 0
ch.Close()
if val, open := <-ch.Out(); open == true {
t.Fatal("overflowing channel expected closed but got", val)
}
ch = NewOverflowingChannel(2)
testChannelConcurrentAccessors(t, "overflowing channel", ch)
}