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

Resilience Extensions for JS.

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

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

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

test("co: cancel while running", async (t) => {
  let state = 0;
  const e = co(function* () {
    state += 1;
    state += yield Promise.resolve(1);
    state += yield Promise.resolve(2);
    yield Promise.reject(new Error("blah"));
  });

  t.is(await e.cancel(), false);
  t.is(await e, undefined);
  t.is(state, 1);
});