From c1c075f0ad72dbb7e0ff074e6d7d8ee480b9b2a3 Mon Sep 17 00:00:00 2001
From: Eugene Ghanizadeh Khoub <ghanizadeh.eugene@gmail.com>
Date: Fri, 10 May 2024 16:06:44 +0200
Subject: [PATCH] fix coverage issue

---
 src/test/select.test.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/test/select.test.ts b/src/test/select.test.ts
index 044a8d4..eccd069 100644
--- a/src/test/select.test.ts
+++ b/src/test/select.test.ts
@@ -4,6 +4,21 @@ import { select } from '../select'
 
 
 describe(select, () => {
+  test('proxies a source.', () => {
+    const src = new State(0)
+    const selected = select(src)
+
+    const cb = jest.fn()
+
+    observe($ => cb($(selected)!))
+
+    src.set(1)
+    expect(cb).toHaveBeenCalledWith(1)
+
+    src.set(2)
+    expect(cb).toHaveBeenCalledWith(2)
+  })
+
   test('without select, higher order sources are stopped after switch.', () => {
     const flag = new State(false)
     const a = new State('a')