41 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
			
		
		
	
	
			41 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
import downloader from '~/lib/utils/downloader';
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describe('Downloader', () => {
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  let a;
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  beforeEach(() => {
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    a = { click: jest.fn() };
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    jest.spyOn(document, 'createElement').mockImplementation(() => a);
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  });
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  afterEach(() => {
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    jest.clearAllMocks();
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  });
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  describe('when inline file content is provided', () => {
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    const fileData = 'inline content';
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    const fileName = 'test.csv';
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    it('uses the data urls to download the file', () => {
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      downloader({ fileName, fileData });
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      expect(document.createElement).toHaveBeenCalledWith('a');
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      expect(a.download).toBe(fileName);
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      expect(a.href).toBe(`data:text/plain;base64,${fileData}`);
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      expect(a.click).toHaveBeenCalledTimes(1);
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    });
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  });
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  describe('when an endpoint is provided', () => {
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    const url = 'https://gitlab.com/test.csv';
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    const fileName = 'test.csv';
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    it('uses the endpoint to download the file', () => {
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      downloader({ fileName, url });
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      expect(document.createElement).toHaveBeenCalledWith('a');
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      expect(a.download).toBe(fileName);
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      expect(a.href).toBe(url);
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      expect(a.click).toHaveBeenCalledTimes(1);
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    });
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  });
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});
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