  const payment = await paymentBuild().save();
  const oldStripeId = payment.stripeId;
  const newStripeId = mongoose.Types.ObjectId().toHexString();

  const updatedPayment = payment.set({stripeId: newStripeId})
  await updatedPayment.save();
	expect(updatedPayment.stripeId).not.toEqual(oldStripeId);
	expect(updatedPayment.stripeId).toEqual(newStripeId);
});