How can I stub uuid

How can I stub function uuid v4 if imported like import * as uuid from 'uuid/v4'?

[djungowski]

You can do this with Jasmine:

import * as uuid from 'uuid';
...
spyOnProperty(uuid, 'v4').and.returnValue(() => 'f3b3a923-61b3-4d6f-9a7e-632061825358');

This does not work anymore, since it will produce the error

Error: <spyOnProperty> : v4 is not declared configurable

The same applies for spyOn. The way to go is to write some kind of service for your application that uses v4 that you can then mock

[rooby]

You can do this with Jasmine:

import * as uuid from 'uuid';
...
spyOnProperty(uuid, 'v4').and.returnValue(() => 'f3b3a923-61b3-4d6f-9a7e-632061825358');