def METHOD_NAME(library):
    library.add_file_input("file-field")
    assert len(library.elements) == 1
    assert library.elements[0] == {
        "type": "input-file",
        "name": "file-field",
        "source": None,
        "destination": None,
        "file_type": None,
        "multiple": False,
        "label": None,
    }