Function prepareFieldSubscribers

src/FinalForm.fieldSubscribing.test.ts:6–37

(
    formSubscription,
    fieldSubscriptions,
    fieldConfig = {},
    config = {},
  )

describe("Field.subscribing", () => {
  const prepareFieldSubscribers = (
    formSubscription,
    fieldSubscriptions,
    fieldConfig = {},
    config = {},
  ) => {
    const form = createForm({ onSubmit: onSubmitMock, ...config });
    const formSpy = jest.fn();
    form.subscribe(formSpy, formSubscription);
    expect(formSpy).toHaveBeenCalled();
    expect(formSpy).toHaveBeenCalledTimes(1);
    expect(formSpy.mock.calls[0][0].values).toBeUndefined();

    return {
      ...Object.keys(fieldSubscriptions).reduce((result, name) => {
        const spy = jest.fn();
        form.registerField(
          name,
          spy,
          fieldSubscriptions[name],
          fieldConfig[name],
        );
        expect(spy).toHaveBeenCalled();
        expect(spy).toHaveBeenCalledTimes(1);
        const { blur, change, focus } = spy.mock.calls[0][0];
        result[name] = { blur, change, focus, spy };
        return result;
      }, {}),
      form,
      formSpy,
    };
  };

  it("should provide a list of registered fields", () => {
    const form = createForm({ onSubmit: onSubmitMock });