0.3.0 Release

src/index.spec.ts

@@ -0,0 +1,29 @@
+import test from "ava";
+import { expect } from "chai";
+import { once, sleep } from "./";
+import { EventEmitter } from "events";
+
+const TimingErrorMarginMs = 50;
+
+test("sleep() resolves after the specified delay in milliseconds", async t => {
+    const before = Date.now();
+    await sleep(200);
+    const after = Date.now();
+
+    expect(after - before).gte(200);
+    expect(after - before).closeTo(200, TimingErrorMarginMs);
+});
+
+test("once() resolves only after the specified event is emitted", async t => {
+    const emitter = new EventEmitter();
+    const before = Date.now();
+    emitter.emit("noise", "is ignored");
+    setTimeout(() => emitter.emit("done", "some-result"), 200);
+
+    const result = await once(emitter, "done");
+    const after = Date.now();
+
+    expect(result).to.equal("some-result");
+    expect(after - before).gte(200);
+    expect(after - before).closeTo(200, TimingErrorMarginMs);
+});