diff --git a/packages/reffuse/src/tests.ts b/packages/reffuse/src/tests.ts
index 1db3454..b7eb6b0 100644
--- a/packages/reffuse/src/tests.ts
+++ b/packages/reffuse/src/tests.ts
@@ -7,6 +7,16 @@ const runtime = Runtime.make({
     fiberRefs: FiberRefs.empty(),
 })
 
+const createRunSync = <R1, R2>(runtime: Runtime.Runtime<R1>, layer: Layer.Layer<R2>) => {
+    const context = Effect.context<R1 | R2>().pipe(
+        Effect.provide(layer),
+        Runtime.runSync(runtime),
+    )
+
+    return <A, E>(effect: Effect.Effect<A, E, R1 | R2>) =>
+        Runtime.runSync(runtime)(effect.pipe(Effect.provide(context)))
+}
+
 
 class MyService extends Effect.Service<MyService>()("MyServer", {
     effect: Effect.gen(function*() {
@@ -20,12 +30,14 @@ const MyLayer = Layer.empty.pipe(
     Layer.provideMerge(MyService.Default)
 )
 
+
+const runSync = createRunSync(runtime, MyLayer)
+
 const setMyServiceValue = (value: string) => Effect.gen(function*() {
     console.log("previous value: ", yield* (yield* MyService).ref)
     yield* Ref.set((yield* MyService).ref, value)
     console.log("new value: ", yield* (yield* MyService).ref)
 })
 
-
-Runtime.runSync(runtime)(setMyServiceValue("1").pipe(Effect.provide(MyLayer)))
-Runtime.runSync(runtime)(setMyServiceValue("2").pipe(Effect.provide(MyLayer)))
+runSync(setMyServiceValue("1"))
+runSync(setMyServiceValue("2"))