laconicd/rpc/ethereum/pubsub/pubsub_test.go

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2021-04-18 16:39:15 +00:00
package pubsub
import (
"log"
"sort"
"sync"
"testing"
"time"
"github.com/stretchr/testify/require"
coretypes "github.com/tendermint/tendermint/rpc/core/types"
)
func TestAddTopic(t *testing.T) {
q := NewEventBus()
err := q.AddTopic("kek", make(<-chan coretypes.ResultEvent))
require.NoError(t, err)
err = q.AddTopic("lol", make(<-chan coretypes.ResultEvent))
require.NoError(t, err)
err = q.AddTopic("lol", make(<-chan coretypes.ResultEvent))
require.Error(t, err)
topics := q.Topics()
sort.Strings(topics)
require.EqualValues(t, []string{"kek", "lol"}, topics)
}
func TestSubscribe(t *testing.T) {
q := NewEventBus()
kekSrc := make(chan coretypes.ResultEvent)
q.AddTopic("kek", kekSrc)
lolSrc := make(chan coretypes.ResultEvent)
q.AddTopic("lol", lolSrc)
kekSubC, err := q.Subscribe("kek")
require.NoError(t, err)
lolSubC, err := q.Subscribe("lol")
require.NoError(t, err)
lol2SubC, err := q.Subscribe("lol")
require.NoError(t, err)
wg := new(sync.WaitGroup)
wg.Add(4)
emptyMsg := coretypes.ResultEvent{}
go func() {
defer wg.Done()
msg := <-kekSubC
log.Println("kek:", msg)
require.EqualValues(t, emptyMsg, msg)
}()
go func() {
defer wg.Done()
msg := <-lolSubC
log.Println("lol:", msg)
require.EqualValues(t, emptyMsg, msg)
}()
go func() {
defer wg.Done()
msg := <-lol2SubC
log.Println("lol2:", msg)
require.EqualValues(t, emptyMsg, msg)
}()
go func() {
defer wg.Done()
time.Sleep(time.Second)
close(kekSrc)
close(lolSrc)
}()
wg.Wait()
time.Sleep(time.Second)
}