fix tests

packages/signals/examples/send.rs

@@ -0,0 +1,26 @@
+use dioxus::prelude::*;
+use dioxus_signals::*;
+
+fn main() {
+    tracing_subscriber::fmt::init();
+    dioxus_desktop::launch(App);
+}
+
+#[component]
+fn App(cx: Scope) -> Element {
+    let mut signal = use_signal_sync(cx, || 0);
+    cx.use_hook(|| {
+        std::thread::spawn(move || loop {
+            std::thread::sleep(std::time::Duration::from_secs(1));
+            signal += 1;
+        })
+    });
+
+    render! {
+        button {
+            onclick: move |_| signal += 1,
+            "Increase"
+        }
+        "{signal}"
+    }
+}