在玩笑测试中未调用componentWillUnmount

Question

运行测试后出现此错误。不调用componentWillUnmount。我在这里想念什么？

   expect(jest.fn()).toHaveBeenCalledWith(...expected)

    Expected: "mouseup", [Function anonymous]

    Number of calls: 0

Component.js

export default class Component extends React.Component {
  constructor(props) {
    super(props)
  }

  componentDidMount() {
    document.addEventListener("mouseup", this.handleMouseUp)
  }

  componentWillUnmout() {
    document.removeEventListener("mouseup", this.handleMouseUp)
  }

Component.spec.js

describe("unmounting", () => {
    let wrapper
    let handleMouseUp

    beforeEach(() => {
      document.removeEventListener = jest.fn()
    })

    it("removes mouseup event listener", () => {
      wrapper = mountComponent(Suggestions, props)
      handleMouseUp = wrapper.instance().handleMouseUp
      wrapper.unmount()
      expect(document.removeEventListener).toHaveBeenCalledWith("mouseup", handleMouseUp)
    })
  })