code: def test_construction(self):
      uploader = FileUpload()
      # Default
      assert uploader.accept == ""
      assert not uploader.multiple
      assert not uploader.disabled
  
imports: from unittest import TestCase
  from traitlets import TraitError
  from ipywidgets import FileUpload
label_desc: Use image node_id 1 for calling the TestFileUpload obj's underlying member method code with example usage: obj.test_construction() without return types