message: maybe moment.format() and Date.now() need to be restored...
diff: @@ -6,8 +6,20 @@ import Moment from "moment-timezone"
  import RegistrationFlow from "../RegistrationFlow"
  jest.mock("tipsi-stripe", () => ({ setOptions: jest.fn() }))
  -Moment.prototype.format = jest.fn(() => "03d 14h 01m 59s")
  -Date.now = jest.fn(() => 1528243200)
  +const mockNow = jest.fn(() => 1528243200)
  +const realNow = Date.now
  +
  +const mockFormat = jest.fn(() => "03d 14h 01m 59s")
  +const realFormat = Moment.prototype.format
  +
  +beforeEach(() => {
  + Moment.prototype.format = mockFormat
  + Date.now = mockNow
  +})
  +afterEach(() => {
  + Moment.prototype.format = realFormat
  + Date.now = realNow
  +})
  const Sale = {
  id: "david-lynch-foundation-benefit-auction-2018",
  