Angular E2E tests - Protractor-Cucumber-Framework creating hundreds of strange cache files

Question

In an Angular project, we're using the Protractor-Cucumber-Framework for our E2E tests. After running all my E2E tests, not only does it update a results.json and results.xml file (this seems normal to me), but it also generates hundreds of cryptic, un-openable cache files under a new null folder (see attached screenshot). There are literally almost 1000 of these new files. Is this normal, and can anyone tell me what these are for and how to prevent this?

Answer 1

I've disabled these files being created on every test run by commenting out a line '--disk-cache-dir=null', in the chromeOptions property of protractor.conf.js:

chromeOptions: {
  prefs: {
    'plugins.always_open_pdf_externally': true,
    download: {
      directory_upgrade: true,
      prompt_for_download: false,
      default_directory: downloadsPath,
    },
  },
  args: [
    '--no-sandbox',
    '--test-type=browser',
    '--disable-gpu',
    '--log-level=1',
    '--disable-dev-shm-usage',
    // '--disk-cache-dir=null',
  ],
},