Sooner or later in your unit tests you will run into an issue where you need to import a class into your test and mock it, to keep up with good tes...
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Merci pour m'aider avec un test difficile d'Electron. Maintenant je peu faire un mock de l'object BrowserWindow et tester le classes de niveu plus bas. Il-y-a un example:
how do you call the
playSoundFile
method?What took me forever to realize is the jest.mock has to be done above the describe block.
additionally, instead of using this library, I now use
Update: I now use the following method: dev.to/bmitchinson/mocking-classes...
I try to mock a FeathersJS service class with your article example without any success.
I cannot figure out how to check class methods calls.
I ended up an another way with this:
This works but the implements looks wrong. I have to first mock the whole class with
jest.mock
then mock one of the method while storing it on a variable for test check.Is it the way to go? Will you do the same way?
Thanks!
mocked()
function from ts-jest saved my life! Thank you for the tip :)You're welcome!
Merci Beaucoup.
De rien!
I got an error saying X.mockClear is not a function (X is the class I want to mock). I can't find anything wrong with my setup. Could you help suggest what I can do to resolve it. Thanks
@devakone thanks a lot man! 🚀
Thanks. It looks pretty easy.
I was wondering when a mockedClass is re-used throughout the project, how this may look like. jest.mock() does not return anything, does it?
Anyone looking for the link to the ts-jest mocked document, it is this kulshekhar.github.io/ts-jest/docs/...
Github and Kulshekhar have been inverted to find the docs.
I also found value in understanding what the Mock Implementation is doing. In this link, jonathancreamer.com/testing-typesc..., explains what that is before mockImplementation was created. An assumption on creation regardless it explains that well which makes this article very fluent.