rsxjs/__tests__/integration/coroutine/test-cancel-defer.js

Resilience Extensions for JS.

/**
 * @file tests/coroutine/test-cancel-defer.js
 * @copyright 2018-present Karim Alibhai. All rights reserved.
 */

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

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

test("co: cancel + defer", async (t) => {
  const fn = spy(() => {});
  const e = co(function* (d) {
    d(fn);

    yield 1;
    yield Promise.reject(new Error("blah"));
  });

  t.is(await e.cancel(), false);
  t.is(await e, undefined);
  t.true(fn.calledOnce);
});