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import downloadFile from '../downloadFile'
jest
.useFakeTimers()
.setSystemTime(new Date('2020-01-01').getTime());
global.URL.createObjectURL = jest.fn();
(window as any).global.Blob = function (content, options){return ({content, options})}
describe('downloadFile', () => {
it('Creates an <a> tag', () => {
const createElementSpy = jest.spyOn(document, 'createElement');
downloadFile('hi', 'filename')
expect(createElementSpy).toBeCalled()
})
it('Creates the blob with the correct data', () => {
const data = 'writingtestsishard'
global.URL.createObjectURL = jest.fn(() => data);
downloadFile(data, 'filename')
const expected = {
content: [data],
options: {
type: "text"
}
}
expect(global.URL.createObjectURL).toBeCalledWith(expected)
})
})
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