micro/router/default_test.go

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package router
import (
"fmt"
"sync"
"testing"
"time"
"github.com/micro/go-micro/registry/memory"
"github.com/micro/go-micro/util/log"
)
func routerTestSetup() Router {
r := memory.NewRegistry()
return newRouter(Registry(r))
}
func TestRouterStartStop(t *testing.T) {
r := routerTestSetup()
if err := r.Start(); err != nil {
t.Errorf("failed to start router: %v", err)
}
_, err := r.Advertise()
if err != nil {
t.Errorf("failed to start advertising: %v", err)
}
if err := r.Stop(); err != nil {
t.Errorf("failed to stop router: %v", err)
}
log.Debugf("TestRouterStartStop STOPPED")
}
func TestRouterAdvertise(t *testing.T) {
r := routerTestSetup()
// lower the advertise interval
AdvertiseEventsTick = 500 * time.Millisecond
AdvertiseTableTick = 1 * time.Second
if err := r.Start(); err != nil {
t.Errorf("failed to start router: %v", err)
}
ch, err := r.Advertise()
if err != nil {
t.Errorf("failed to start advertising: %v", err)
}
// receive announce event
ann := <-ch
log.Debugf("received announce advert: %v", ann)
// Generate random unique routes
nrRoutes := 5
routes := make([]Route, nrRoutes)
route := Route{
Service: "dest.svc",
Address: "dest.addr",
Gateway: "dest.gw",
Network: "dest.network",
Router: "src.router",
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Link: "local",
Metric: 10,
}
for i := 0; i < nrRoutes; i++ {
testRoute := route
testRoute.Service = fmt.Sprintf("%s-%d", route.Service, i)
routes[i] = testRoute
}
var advertErr error
createDone := make(chan bool)
errChan := make(chan error)
var wg sync.WaitGroup
wg.Add(1)
go func() {
wg.Done()
defer close(createDone)
for _, route := range routes {
log.Debugf("Creating route %v", route)
if err := r.Table().Create(route); err != nil {
log.Debugf("Failed to create route: %v", err)
errChan <- err
return
}
}
}()
var adverts int
readDone := make(chan bool)
wg.Add(1)
go func() {
defer func() {
wg.Done()
readDone <- true
}()
for advert := range ch {
select {
case advertErr = <-errChan:
t.Errorf("failed advertising events: %v", advertErr)
default:
// do nothing for now
log.Debugf("Router advert received: %v", advert)
adverts += len(advert.Events)
}
return
}
}()
// done adding routes to routing table
<-createDone
// done reading adverts from the routing table
<-readDone
if adverts != nrRoutes {
t.Errorf("Expected %d adverts, received: %d", nrRoutes, adverts)
}
wg.Wait()
if err := r.Stop(); err != nil {
t.Errorf("failed to stop router: %v", err)
}
}