Tips for simulating JSON import using Jest in TypeScript

When it comes to unit testing in Typescript using Jest, I am looking to mock a .json file.

Currently, I have a global mock set up inside my jest.config.js file which works perfectly:

'package.json': '<rootDir>/__tests__/tasks/__mocks__/data.json'

However, I would like to create a local mock within my test class.

I attempted the following approach, but it did not yield the desired result:

jest.mock('../../package.json', () => ({
    package : { name: '__name__', 'version': '__version__'};
}), { virtual: true })

Answer №1

Did you give this a shot?

const packageJson = require('../../package.json);
 jest.mock(packageJson, () => ({
     package : { name: '__name__', 'version': '__version__'};
 }), { virtual: true })

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