Files
via/pubsub_helpers_test.go
Ryan Hamamura 2c44671d0e feat: add generic pub/sub helpers and pubsub-crud example
Add typed Publish[T] and Subscribe[T] generic helpers that handle
JSON marshaling, along with vianats.EnsureStream and ReplayHistory
helpers. Refactor nats-chatroom to use the new APIs.

Add pubsub-crud example demonstrating CRUD operations with DaisyUI
toast notifications broadcast to all connected clients via NATS.
2026-02-06 09:47:39 -10:00

67 lines
1.2 KiB
Go

package via
import (
"sync"
"testing"
"github.com/ryanhamamura/via/h"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestPublishSubscribe_RoundTrip(t *testing.T) {
ps := newMockPubSub()
v := New()
v.Config(Options{PubSub: ps})
type event struct {
Name string `json:"name"`
Count int `json:"count"`
}
var got event
var wg sync.WaitGroup
wg.Add(1)
c := newContext("typed-ctx", "/", v)
c.View(func() h.H { return h.Div() })
_, err := Subscribe(c, "events", func(e event) {
got = e
wg.Done()
})
require.NoError(t, err)
err = Publish(c, "events", event{Name: "click", Count: 42})
require.NoError(t, err)
wg.Wait()
assert.Equal(t, "click", got.Name)
assert.Equal(t, 42, got.Count)
}
func TestSubscribe_SkipsBadJSON(t *testing.T) {
ps := newMockPubSub()
v := New()
v.Config(Options{PubSub: ps})
type msg struct {
Text string `json:"text"`
}
called := false
c := newContext("bad-json-ctx", "/", v)
c.View(func() h.H { return h.Div() })
_, err := Subscribe(c, "topic", func(m msg) {
called = true
})
require.NoError(t, err)
// Publish raw invalid JSON — handler should silently skip
err = c.Publish("topic", []byte("not json"))
require.NoError(t, err)
assert.False(t, called)
}