jestjs - are there issues with generating a new wrapper for each test in Enzyme? -


i'm doing tests react project using jest + enzyme.

currently generate new wrapper each test in suite.

example:

it('should render title', () => {  let wrapper = shallow(<component />);  expect(wrapper.find('#title')).tohavelength(1); });  it('should call closemodal function when clicked', () => {  let wrapper = shallow(<component />);  wrapper.instance().closemodal = jest.fn();  let targetfunction = wrapper.instance().closemodal;  expect(targetfunction).tohavebeencalled(); });

i know whether standard or should generating wrapper in beforeall , referencing one.

i'm interested in potential improvement in speed time. right have 190 tests , done in 21.38s.

the problem beforeall use same instance in of test. if change internal state or props of component in 1 of test can influent result of other test.

normally use beforeall test different parts of component without having generic test 'renders correct' multiple small ones 'renders title', 'renders body' , on, every test tests single part of component, make easier find place went wrong if test fails.


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