Example of unit test using Sinon

SinonExample.jsx

describe('BidListButtonComponent', () => {
  const bidList = [{ position: { id: 1 } }];
  const bidListFalse = [{ position: { id: 2 } }];

  it('can call the toggleSaved function', () => {
    const spy = sinon.spy();
    const wrapper = shallow(
      <BidListButton
        id={1}
        toggleBidPosition={spy}
        compareArray={bidListFalse}
        isLoading={false}
      />,
    );
    wrapper.find('button').simulate('click');
    sinon.assert.calledOnce(spy);
  });
});