rsxjs/__tests__/integration/deferral/test-on-success.js

Resilience Extensions for JS.

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

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

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

test("on success", async (t) => {
  const fn = spy(() => {});
  const op = Deferral.fromAsync(async function (defer) {
    defer(fn);
    await 1;
    await 2;
  });

  t.is(await op(), undefined);
  t.true(fn.calledOnce);
});

test("on success with generator", async (t) => {
  const fn = spy(() => {});
  const op = Deferral.fromGenerator(function* (defer) {
    defer(fn);

    t.is(1, yield 1);
    t.is(2, yield Promise.resolve(2));

    try {
      yield Promise.reject(new Error("blah"));
    } catch (err) {
      t.not(String(err).indexOf("blah"), -1);
    }
  });

  t.is(await op(), undefined);
  t.true(fn.calledOnce);
});