Add tests expecting the deprecation warning

src/components/Modal/Modal.test.tsx

@@ -2,18 +2,24 @@ import React from 'react'
 import { render } from '@testing-library/react'
 import { renderHook, act } from '@testing-library/react-hooks'
 
+jest.mock('../../deprecation')
+import { deprecationWarning } from '../../deprecation'
 import { Modal, connectModal, useModal } from './Modal'
 
 describe('Modal component', () => {
   it('renders without errors', () => {
     const { queryByTestId } = render(<Modal>My Modal</Modal>)
     expect(queryByTestId('modal')).toBeInTheDocument()
+    expect(deprecationWarning).toHaveBeenCalledTimes(1)
   })
 })
 
 const TestModal = (): React.ReactElement => <div>My Modal</div>
 
 describe('connectModal', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
   const mockClose = jest.fn()
 
   describe('if isOpen is false', () => {
@@ -23,6 +29,7 @@ describe('connectModal', () => {
         <TestConnectedModal isOpen={false} onClose={mockClose} />
       )
       expect(queryByText('My Modal')).not.toBeInTheDocument()
+      expect(deprecationWarning).toHaveBeenCalledTimes(1)
     })
   })
 
@@ -33,13 +40,19 @@ describe('connectModal', () => {
         <TestConnectedModal isOpen={true} onClose={mockClose} />
       )
       expect(queryByText('My Modal')).toBeInTheDocument()
+      expect(deprecationWarning).toHaveBeenCalledTimes(2)
     })
   })
 })
 
 describe('useModal', () => {
+  beforeEach(() => {
+    jest.clearAllMocks()
+  })
+
   it('provides state and functions for opening/closing a modal', () => {
     const { result } = renderHook(() => useModal())
+    expect(deprecationWarning).toHaveBeenCalledTimes(1)
     expect(result.current.isOpen).toEqual(false)
     expect(typeof result.current.openModal).toBe('function')
     expect(typeof result.current.closeModal).toBe('function')
@@ -49,11 +62,13 @@ describe('useModal', () => {
     })
 
     expect(result.current.isOpen).toEqual(true)
+    expect(deprecationWarning).toHaveBeenCalledTimes(2)
 
     act(() => {
       result.current.closeModal()
     })
 
     expect(result.current.isOpen).toEqual(false)
+    expect(deprecationWarning).toHaveBeenCalledTimes(3)
   })
 })