Please help. I cannot run test because in my util langProvider is package that drops tests. I have to mock langProvider function or strings variable. How I can do that? My test file Answer not sure, but you can try to insert in your test file before describe function, something like that:
Tag: unit-testing
Jest Unit Testing function that calls a second one that returns a promise
Edited Question with vazsonyidl suggestions applied I have to write unit tests for a function similar to this one: As functionC belongs to another module, I placed a mock of it in the _mocks_folder: I have mocked functionB in two diferent ways for testing the then and the catch : What I am trying to do is expect that functionC
mock post method npm request module with jest
I know that npm request module is now deprecated, but i want to mock a post http call with jest. Here is my function And in try this in my test : But it returns TypeError: Cannot set property ‘post’ of undefined I want to mock that method to handle error and response to test methods inside them Answer Use
TypeError: jwt(…).unless is not a function when mocking with Jest
I am trying to mock the .unless function of express-jwt and currently have this mock setup to compare a JWT with an admin and non admin. This worked perfect until we added .unless and I am not sure the best way to approach the issue. That is the mock. I have tried moving that into a const and adding: mockFun.unless
TypeError: nock(…).persist(…).log is not a function
I am trying to get more info on why my nock mock is not right, but I can’t make the persist().log() work. Here is the test : Stackoverflow wants me to add some more details to be able to post this question, but I don’t know what to tell you more than that. Answer .log was removed in Nock v13
jest ReferenceError: Cannot access ” before initialization
I’m getting the error: ReferenceError: Cannot access ‘myMock’ before initialization Even though i respected jest documentation about the hoisting: A limitation with the factory parameter is that, since calls to jest.mock() are hoisted to the top of the file, it’s not possible to first define a variable and then use it in the factory. An exception is made for variables
Testing Cross Browser Extension With Jest, How To Mock Chrome Storage API?
After putting off testing for a while now due to Cypress not allowing visiting chrome:// urls, I decided to finally understand how to unit/integration test my extension – TabMerger. This comes after the many times that I had to manually test the ever growing functionality and in some cases forgot to check a thing or two. Having automated testing will
JEST | Assert a function was called inside addEventListener callback
I have the following function: Code to test The question is: How can I assert using Jest that createAndAppendPTag was called upon a document click event ? Jest This is what I tried, but can’t seem to make the test pass: Terminal This results in the following: Thanks in advance. Answer I ran this simplified test to check for the
Unit test with react hook fails
I don’t understand the result I get on this unit test. I expect the second check for textField.valid to be true and instead it returns false. Below is part of the component I’m testing against: … Below is the test I’m running: The output of console.log(wrapper.debug()) is the following: So why does the test fail? Answer The problem was that
Test clearing of search input field on submit (after fetching)
I want to test that a search box does calls a handler (passed as prop) with the fetched results and resets the input field afterwards. This is the error: Answer waitFor returns a Promise so you need to use await: