monorepo

packages/helpers/deferred.test.ts

@@ -0,0 +1,14 @@
+import test from "ava"
+import { createDeferred } from "./deferred.js"
+
+test("resolve", async (t) => {
+  const deferred = createDeferred<string>()
+  setTimeout(() => deferred.resolve("hi"))
+  t.is(await deferred, "hi")
+})
+
+test("reject", async (t) => {
+  const deferred = createDeferred()
+  setTimeout(() => deferred.reject(new Error("oops")))
+  await t.throwsAsync(() => deferred, { instanceOf: Error, message: "oops" })
+})