From e0fa5560ab2f4676055d25980b4cb3ab4438febc Mon Sep 17 00:00:00 2001
From: Jeff Winkler <winkler1@gmail.com>
Date: Sun, 16 Nov 2025 04:51:04 -0500
Subject: [PATCH] Signals fix (#17)

* Fix signals bug, add test.

* Test
---
 context.go  |  4 ++--
 via_test.go | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/context.go b/context.go
index f9e0ff6..7ff2f9d 100644
--- a/context.go
+++ b/context.go
@@ -280,10 +280,10 @@ func (c *Context) SyncSignals() {
 	}
 	updatedSigs := make(map[string]any)
 
-	c.signals.Range(func(idAny, val any) bool {
+	c.signals.Range(func(key, val any) bool {
 		// We know the types.
 		sig, _ := val.(*signal) // adjust *Signal to your actual signal type
-		id, _ := val.(string)
+		id, _ := key.(string)
 		if sig.err != nil {
 			c.app.logWarn(c, "signal out of sync'%s': %v", sig.id, sig.err)
 		}
diff --git a/via_test.go b/via_test.go
index 887dcbd..668f1da 100644
--- a/via_test.go
+++ b/via_test.go
@@ -1,6 +1,7 @@
 package via
 
 import (
+	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"testing"
@@ -84,3 +85,24 @@ func TestConfig(t *testing.T) {
 	v.Config(Options{DocumentTitle: "Test"})
 	assert.Equal(t, "Test", v.cfg.DocumentTitle)
 }
+
+func TestSyncSignals(t *testing.T) {
+	var ctx *Context
+	var sig *signal
+	v := New()
+	v.Page("/", func(c *Context) {
+		ctx = c
+		sig = c.Signal("initial")
+		c.View(func() h.H { return h.Div() })
+	})
+
+	req := httptest.NewRequest("GET", "/", nil)
+	w := httptest.NewRecorder()
+	v.mux.ServeHTTP(w, req)
+
+	sig.SetValue("updated")
+	ctx.SyncSignals()
+
+	patch := <-ctx.patchChan
+	assert.Equal(t, patch.content, fmt.Sprintf(`{"%s":"updated"}`, sig.ID()))
+}