如何为反应中的方法编写单元测试用例

Question

  public requestMachineApplyCorrection = (id: string) => {
let correctionID: string = id;
fetch('/api/RequestMachineApplyCorrection', {
  ...defaultOptions,
  method: "POST",
  body: JSON.stringify({ correctionID: correctionID })
})
  .then(data => {
    this.getQueuedCorrectionObjects()
  })
  .catch(error => {
    console.log(error)
  });

}

我刚开始接触 typescript 来编写单元测试用例。如何为上述方法编写单元测试用例