cypress file upload

cypressFileUpload.js

const uploadFile = (fileName, fileType = '', selector) => {
  cy.get(selector).then(subject => {
    cy.fixture(fileName, 'base64')
      .then(Cypress.Blob.base64StringToBlob)
      .then(blob => {
        const el = subject[0]
        const testFile = new File([blob], fileName, { type: fileType })
        const dataTransfer = new DataTransfer()
        dataTransfer.items.add(testFile)
        el.files = dataTransfer.files
        console.log(el.files)
      })
  })
  
  // from https://bparkerproductions.com/testing-file-uploads-with-cypress-io/