docstr: Test that it can be called with no args.
docstr_tok: ["Test","that","it","can","be","called","with","no","args","."]
code: def test_no_args(self):
      """Test that it can be called with no args."""
      st.pydeck_chart()
  
      el = self.get_delta_from_queue().new_element
      actual = json.loads(el.deck_gl_json_chart.json)
  
      self.assertEqual(actual, deck_gl_json_chart.EMPTY_MAP)
  
file_path: streamlit/lib/tests/streamlit/elements/pydeck_test.py
imports: import json
  from unittest import mock
  import pandas
  import pydeck
  import streamlit
  import streamlit.elements.deck_gl_json_chart
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 5 for calling the PyDeckTest obj's underlying member method code with example usage: obj.test_no_args() without return types