title: How to expect one function to call another function?
body: <p>I am trying to mock a function call, and expect it to have called another function within it once.</p>
  <p>myFunctions.test.js</p>
  <pre><code>import { resetModal } from '../myFunctions.js';
  
  describe('resetModal', () =&gt; {
    it('calls the clearSomethingInModal function', () =&gt; {
      const clearSomethingInModal = jest.fn();
      resetModal();
      expect(clearSomethingInModal.mock.calls.length).toBe(1);
    })
  })
  </code></pre>
  <p>myFunctions.js</p>
  <pre><code>export resetModal() {
    clearSomethingInModal()
  }
  </code></pre>
  <p>However, Jest output says that it has not been called.  How can I best do this?</p>