From 7ed5135aa6b9b78153727a423a893f5680640d11 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julien=20Valverd=C3=A9?= <julien.valverde@mailo.com>
Date: Thu, 28 May 2026 01:02:18 +0200
Subject: [PATCH] Add test

---
 packages/effect-lens/src/Lens.test.ts | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/packages/effect-lens/src/Lens.test.ts b/packages/effect-lens/src/Lens.test.ts
index 8d84d2f..de10c5d 100644
--- a/packages/effect-lens/src/Lens.test.ts
+++ b/packages/effect-lens/src/Lens.test.ts
@@ -233,6 +233,31 @@ describe("Lens", () => {
         expect(result.count).toBe(iterations)
     })
 
+    test("unwrap delegates reads, writes, and locking to the inner lens", async () => {
+        const iterations = 100
+
+        const result = await Effect.runPromise(Effect.flatMap(
+            SubscriptionRef.make(0),
+            parent => {
+                const lens = Lens.unwrap(Effect.succeed(Lens.fromSubscriptionRef(parent)))
+
+                return Effect.flatMap(
+                    Effect.forEach(
+                        Array.from({ length: iterations }),
+                        () => Lens.updateEffect(
+                            lens,
+                            count => Effect.as(Effect.yieldNow(), count + 1),
+                        ),
+                        { concurrency: "unbounded", discard: true },
+                    ),
+                    () => Effect.all([Lens.get(lens), parent.get] as const),
+                )
+            },
+        ))
+
+        expect(result).toEqual([iterations, iterations])
+    })
+
     test("focusObjectOn focuses a nested property without touching other fields", async () => {
         const [initialCount, updatedState] = await Effect.runPromise(
             Effect.flatMap(