code: def test_format_float_and_default_step(self):
      st.number_input("the label", value=10.0, format="%f")
  
      c = self.get_delta_from_queue().new_element.number_input
      self.assertEqual(c.format, "%f")
      self.assertEqual("%0.2f" % c.step, "0.01")
  
imports: from unittest.mock import MagicMock, patch
  import pytest
  from parameterized import parameterized
  import streamlit
  from streamlit.errors import StreamlitAPIException
  from streamlit.js_number import JSNumber
  from streamlit.proto.Alert_pb2 import Alert
  from streamlit.proto.LabelVisibilityMessage_pb2 import LabelVisibilityMessage
  from streamlit.proto.NumberInput_pb2 import NumberInput
  from streamlit.proto.WidgetStates_pb2 import WidgetState
  from streamlit.testing.v1.app_test import AppTest
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 15 for calling the NumberInputTest obj's underlying member method code with example usage: obj.test_format_float_and_default_step() without return types