Saga with infinite loop should cancel on END action.

[gugr]

Saga with infinite loop should cancel on END action.

[jp928]

@gugr
Do you mind to share a snippet to replicate this issue?

[vatosarmat]

@jp928 it can be reproduces with such test

test('terminates on END action', async () => {
  warn.mockClear();

  function* infiniteLoop() {
    while (true) {
      // Redux-saga docs:
      // If you dispatch the END action, then all Sagas blocked on a take Effect
      // will be terminated regardless of the specified pattern
      yield take('HELLO_WORLD');
    }
  }

  await expectSaga(infiniteLoop)
    .dispatch(END)
    .run();

  expect(warn).not.toHaveBeenCalled(); //FAIL!
});

test('terminates on END action', async () => {
  warn.mockClear();

  function* infiniteLoop() {
    while (true) {
      yield take(END.type);
    }
  }

  await expectSaga(infiniteLoop)
    .dispatch(END)
    .run();

  expect(warn).not.toHaveBeenCalled(); //PASS
});

[vatosarmat]

@jp928 it can be fixed with one-line change. Would you accept a PR?