rsxjs/__tests__/integration/timeout/test-from-async.js

Resilience Extensions for JS.

/**
 * @file tests/timeout/from-async.js
 * @copyright 2018-present Karim Alibhai. All rights reserved.
 */

import { test } from "../../helpers";
import { spy } from "sinon";

import { Timeout } from "../../../";

test("Timeout.fromAsync()", async (t) => {
  const timeout = 1000;

  // create operation from never resolving promise
  const spyFn = spy(() => new Promise(() => {}));
  const slowOp = Timeout.fromAsync(spyFn, { timeout });

  const err = await t.throwsAsync(slowOp(1, 2, 3));
  t.true(spyFn.called, "underlying operation should have run");
  t.true(
    spyFn.calledWithExactly(1, 2, 3),
    "arguments should be passed through"
  );
  t.is(String(err), "Error: Operation timed out");
});