源码快照 @ 2026-09-02 (source-only, 剔除非源码素材)

evals/packages/testkit/test/eventually.test.ts

@@ -0,0 +1,46 @@
+import assert from "node:assert/strict";
+import test from "node:test";
+import { eventually, sleep } from "../src/eventually.ts";
+
+test("eventually polls until the default truthy condition passes", async () => {
+  let attempts = 0;
+  const value = await eventually(() => {
+    attempts += 1;
+    return attempts >= 3 ? "ready" : "";
+  }, { within: 100, intervalMs: 1 });
+
+  assert.equal(value, "ready");
+  assert.equal(attempts, 3);
+});
+
+test("eventually supports custom conditions and asynchronous probes", async () => {
+  let value = 0;
+  const result = await eventually(async () => {
+    await sleep(1);
+    value += 1;
+    return value;
+  }, { within: 100, intervalMs: 1, until: (candidate) => candidate === 2 });
+
+  assert.equal(result, 2);
+});
+
+test("eventually reports its label and last value on timeout", async () => {
+  await assert.rejects(
+    eventually(() => ({ ready: false }), {
+      within: 5,
+      intervalMs: 1,
+      label: "fake readiness",
+      until: (value) => value.ready,
+    }),
+    /Timed out waiting for fake readiness.*last value: \{"ready":false\}/,
+  );
+});
+
+test("eventually reports the last probe error on timeout", async () => {
+  await assert.rejects(
+    eventually(() => {
+      throw new Error("fake failure");
+    }, { within: 5, intervalMs: 1, label: "erroring probe" }),
+    /Timed out waiting for erroring probe.*last error: "fake failure"/,
+  );
+});