jest

I have a project with multiple modules (using Lerna ) and I want to use Jest to run tests. However, when I test code that uses a shared module (npm linked module via Lerna) it seems that Babel is not correctly applied and I get the following error: SyntaxError: Unexpected token import The structure of my project is like this: - my-project |- shared |- native |- web web and native require the shared module. When I go into the shared directory and run the local tests in Jest everything works fine. If I run Jest tests in the web directory the above error occurs as soon as I include something from

I am new to Jest test cases writing, Trying to write the test case for checking navigation in an react application. Currently I have written test case which works like below: I have Login page which is having register link on it, which redirects user to the Register page. So what I am checking is 1. Loading the login page 2. Triggered Register link click event 3. So user moved to the Register page but I am not able to check if the Register page is loaded or not? Is there any way to check the snapshot of the "Register" page and link in URL. I have used jest, enzyme and react-test-render as

I'm having issues testing my thunks, as many of my API calls are using FormData, and I can't seem to figure out how to mock this in tests. I'm using Jest. My setup file looks like this: import 'isomorphic-fetch'; // Mocking the global.fetch included in React Native global.fetch = jest.fn(); // Helper to mock a success response (only once) fetch.mockResponseSuccess = body => { fetch.mockImplementationOnce(() => Promise.resolve({ json: () => Promise.resolve(JSON.parse(body)) }) ); }; // Helper to mock a failure response (only once) fetch.mockResponseFailure = error => { fetch

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I have few json document with the following format :- _source: { userId: "A1A1", customerId: "C1", component: "comp_1", timestamp: 1408986553, } I want to query the document based on the following :- (( userId == currentUserId) OR ( customerId== currentCustomerId) OR (currentRole ==ADMIN) ) AND component= currentComponent) I tried using the SearchSourceBuilder and QueryBuilders.matchQuery, but I wasnt able to put multiple sub queries with AND and OR operators. SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder(); searchSourceBuilder.query(QueryBuilders.matchQuery("userId",userId

My problem was that I am trying to make a unit test for a function but can't figure out how to test a part of it. This is a react / redux action that does the following: 1) retrieves json data with an image url 2) loads the image into an Image instance and dispatches its size to the reducer (asynchronously when image is loaded using Image.onload) 3) dispatches that the fetch was completed to the reducer The image onload happens asynchronously, so when I try to unit test it it wouldn't be called. Moreover, I can't just mock things out because the image instance is created within the function...