error：... is not a constructor
reason：The mock can't be an arrow function because calling new on an arrow function is not allowed in JavaScript.
ref:https://jestjs.io/docs/es6-class-mocks#manual-mock-that-is-another-es6-class
error: Matcher error: received value must be a mock or spy function
reason: Use .toHaveBeenCalledTimes to ensure that a mock function got called exact number of times.
标签：function,https,jest,问题,io,error,mock From： https://www.cnblogs.com/xs1987/p/17463037.htmlref:https://jestjs.io/docs/expect#tohavebeencalledtimesnumber