chore: clean up tests

Author: jquense

test/useBreakpoint.test.tsx

@@ -50,7 +50,7 @@ describe('useBreakpoint', () => {
         return null
       }
       mount(<Wrapper />).unmount()
-      expect(actual).toEqual(expected)
+      expect(actual!).toEqual(expected)
     },
   )
 

test/useMounted.test.tsx

@@ -1,8 +1,6 @@
-import React, { useEffect } from 'react'
+import React from 'react'
 import { act } from 'react-dom/test-utils'
-
 import { mount } from 'enzyme'
-
 import useMounted from '../src/useMounted'
 
 describe('useMounted', () => {

test/usePrevious.test.tsx

@@ -1,6 +1,4 @@
-import React, { useEffect } from 'react'
-
-import { act } from 'react-dom/test-utils'
+import React from 'react'
 import { mount } from 'enzyme'
 import usePrevious from '../src/usePrevious'
 
@@ -18,6 +16,7 @@ describe('usePrevious', () => {
     expect(prevFoo).toEqual(null)
 
     wrapper.setProps({ foo: false })
+
     expect(prevFoo).toEqual(true)
   })
 })