How to use the load-json-file.mockImplementationOnce function in load-json-file
To help you get started, we’ve selected a few load-json-file examples, based on popular ways it is used in public projects.
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kefranabg / readme-md-generator / src / utils.spec.js View on Github 
it('should return undefined', async () => {
loadJsonFile.mockImplementationOnce(() => {
throw new Error('ERROR')
})
const result = await getPackageJson()
expect(result).toBeUndefined()
})
})
