Module: Decidim::FrontEndFileTestHelpers

Defined in:
lib/decidim/dev/test/rspec_support/helpers.rb

Instance Method Summary collapse

Instance Method Details

#add_file(filename, target_selector, event) ⇒ Object 



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# File 'lib/decidim/dev/test/rspec_support/helpers.rb', line 152

def add_file(filename, target_selector, event)
  file = file_to_frontend(filename)

  page.execute_script(
    <<~JS
      var dataUrl = "#{file[:data_url]}";
      fetch(dataUrl).then(function(res) { return res.arrayBuffer(); }).then(function (buffer) {
        var file = new File([buffer], "#{filename}", { type: "#{file[:mime_type]}" });
        var dropzone = document.querySelector("#{target_selector}");

        var dt = new DataTransfer();
        dt.items.add(file);

        if ("#{event}" === "drop") {
          var ev = new Event("drop");
          ev.dataTransfer = dt;
          dropzone.dispatchEvent(ev);
        } else {
          // Simulates selecting the file through the browser's file selector
          var input = dropzone.querySelector("input[type='file']");
          input.files = dt.files;
          input.dispatchEvent(new Event("change", { bubbles: true }));
        }
      });
    JS
  )

  # Wait for the file to be uploaded
  within "[data-dropzone-items]" do
    expect(page).to have_content(filename)
  end
end

#file_to_frontend(filename) ⇒ Object 



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# File 'lib/decidim/dev/test/rspec_support/helpers.rb', line 140

def file_to_frontend(filename)
  filepath = Decidim::Dev.asset(filename)
  mime = MiniMime.lookup_by_filename(filepath).content_type
  encoded = Base64.encode64(File.read(filepath))

  {
    filename:,
    data_url: "data:application/octet-binary;base64,#{encoded.gsub("\n", "")}",
    mime_type: mime
  }
end

#paste_file(filename, target_selector) ⇒ Object 



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# File 'lib/decidim/dev/test/rspec_support/helpers.rb', line 185

def paste_file(filename, target_selector)
  file = file_to_frontend(filename)

  page.execute_script(
    <<~JS
      var dataUrl = "#{file[:data_url]}";
      fetch(dataUrl).then(function(res) { return res.arrayBuffer(); }).then(function (buffer) {
        var file = new File([buffer], "#{filename}", { type: "#{file[:mime_type]}" });

        var dt = new DataTransfer();
        dt.items.add(file);

        var element = document.querySelector("#{target_selector}");
        element.dispatchEvent(new ClipboardEvent("paste", { clipboardData: dt }));
      });
    JS
  )

  # Wait for the file to be uploaded
  sleep 1
end