81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
//go:build integration
|
|
|
|
package views_test
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/nats-io/nats.go"
|
|
"github.com/nats-io/nats.go/jetstream"
|
|
|
|
"git.novox.be/novox/mesh-sdk/go/process"
|
|
"git.novox.be/novox/mesh-sdk/go/testbus"
|
|
"git.novox.be/novox/mesh-sdk/go/views"
|
|
"git.novox.be/novox/mesh-sdk/go/views/viewstest"
|
|
)
|
|
|
|
// An owner's change is an ordinary event on the shared events stream (novox/hq ADR 0635 §5): a reader that follows the
|
|
// owner's state by its read tool hears it on the module's durable consumer of that stream, with no stream of the owner's,
|
|
// and a message that is no views event goes to Other.
|
|
func TestAReaderHearsAnOwnersChangesAsOrdinaryEvents(t *testing.T) {
|
|
nc, err := nats.Connect(testbus.URL(t))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer nc.Close()
|
|
js, err := jetstream.New(nc)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
cred := process.Account{Node: "n1", Module: "reader"}
|
|
kv := viewstest.Serve(t, ctx, js, nc, "o", "modules", "o.o_read_modules", cred.EventConsumerName())
|
|
if _, err := kv.Put(ctx, "a", []byte(`{"n":1}`)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
other := make(chan string, 1)
|
|
r := &views.ProcessReader{Module: "reader", Other: func(m jetstream.Msg) { other <- m.Subject(); _ = m.Ack() }, Logf: t.Logf,
|
|
Call: func(tool string, body any) (json.RawMessage, error) {
|
|
raw, _ := json.Marshal(body)
|
|
m, err := nc.Request("mesh.mod.o.call.o_read_modules.n0", raw, 5*time.Second)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return m.Data, nil
|
|
}}
|
|
if _, err := r.Follow("o", "modules", "o.o_read_modules"); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
r.Start(ctx, js, cred, nil)
|
|
<-r.Ready()
|
|
pic, err := r.KeyValue(ctx, "o_modules")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
w, err := pic.Watch(ctx, "b")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err := kv.Put(ctx, "b", []byte(`{"n":2}`)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
for e := range w.Updates() {
|
|
if e != nil && e.Key() == "b" {
|
|
break
|
|
}
|
|
}
|
|
if s := r.Followers()[0].Status(); s.Asks != 1 || s.Keys != 2 {
|
|
t.Fatalf("the change was not heard as an event alone: %+v", s)
|
|
}
|
|
if _, err := js.Publish(ctx, "mesh.mod.o.event.something-else", []byte("{}")); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if got := <-other; got != "mesh.mod.o.event.something-else" {
|
|
t.Fatalf("other got %s", got)
|
|
}
|
|
}
|