chore(reactivity): correct the description of the test case (#4135)

packages/reactivity/__tests__/effect.spec.ts

@@ -850,7 +850,7 @@ describe('reactivity/effect', () => {
  expect(dummy).toBe(1)
  })
 
- it('should not be trigger when the value and the old value both are NaN', () => {
+ it('should not be triggered when the value and the old value both are NaN', () => {
  const obj = reactive({
  foo: NaN
  })
@@ -884,13 +884,14 @@ describe('reactivity/effect', () => {
  expect(record).toBeUndefined()
  })
 
- it('should trigger once effect when set the equal proxy', () => {
+ it('should not be triggered when set with the same proxy', () => {
  const obj = reactive({ foo: 1 })
  const observed: any = reactive({ obj })
  const fnSpy = jest.fn(() => observed.obj)
 
  effect(fnSpy)
 
+ expect(fnSpy).toHaveBeenCalledTimes(1)
  observed.obj = obj
  expect(fnSpy).toHaveBeenCalledTimes(1)
 
@@ -900,6 +901,7 @@ describe('reactivity/effect', () => {
 
  effect(fnSpy2)
 
+ expect(fnSpy2).toHaveBeenCalledTimes(1)
  observed2.obj2 = obj2
  expect(fnSpy2).toHaveBeenCalledTimes(1)
  })