What are the steps to confirm that a file has been successfully downloaded using TestCafe?

Imagine needing to confirm the download of a file by first downloading it and then checking if the file is in the designated folder.

Answer №1

     const selectorDownloadImageBtn= XPathSelector("//*[text()='Download']")
     const downloadPngImage= XPathSelector("//li[text()='Download PNG image']")
     const downloadJpgImage= XPathSelector("//li[text()='Download JPEG image']")
     const downloadPdfImage= XPathSelector("//li[text()='Download PDF document']")
     const pngFileName = 'chart.png'
     const jpgFileName = 'chart.jpeg'
     const pdfFileName = 'chart.pdf'
     const fileDownloadLocation = '/Users/xddsd/Downloads/'; //location to save the downloaded files
     await t 
            .click(selectorDownloadImageBtn)     //clicked on the download link button
            .click(downloadPngImage)     //saved PNG image file
     await t.expect(fs.existsSync(fileDownloadLocation + pngFileName)).ok();

Answer №2

Follow these steps to achieve this task. The provided example code can be found in the TestCafe Examples repository.

import { RequestLogger } from 'testcafe';

const url = 'http://localhost:3000/download-file';

const logger = RequestLogger({ url, method: 'GET' }, {
    logResponseHeaders:     true,
    logResponseBody:        true,
    stringifyResponseBody:  true
});

fixture `Download file`
    .page('./index.html')
    .requestHooks(logger);

test('Verify file name and content', async t => {
    const fileNameRegEx = /attachment; filename=.*.txt/;
    
    await t
        .click('#download-btn')
        .expect(logger.contains(r => {
            if (r.response.statusCode !== 200)
                return false;
           
            const requestInfo = logger.requests[0];
           
            if (!requestInfo)
                return false;
      
            const downloadedFileName = requestInfo.response.headers['content-disposition'];
            
            if (!downloadedFileName)
                false;
      
             if (!fileNameRegEx.test(downloadedFileName))
                  return false;
            
             const downloadedFileContent = logger.requests[0].response.body;
      
             return downloadedFileContent  === 'Test content';
      })).ok();
});

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