Unit Test: fix '... was not wrapped in act(...)' warning

I found one of my application failed to build on Netlify after I add new feature. And I found the problem caused by yhe conflicts in the dependencies of package in the package.json file.

Solution on local development

Warning: An update to PostProvider inside a test was not wrapped in act(...).

    When testing, code that causes React state updates should be wrapped into act(...):

    act(() => {
      /* fire events that update state */
    });
    /* assert on the output */

    This ensures that you're testing the behavior the user would see in the browser. Learn more at https://reactjs.org/link/wrap-tests-with-act

References:

• Fix the “not wrapped in act(…)” warning