code: def test_init_with_int(self) -> None:
      range1d = Range1d(start=-1, end=3)
      assert range1d.start == -1
      assert range1d.end == 3
      assert range1d.bounds is None
  
imports: from __future__ import annotations
  import pytest
  import datetime
  from math import isnan
  from unittest import mock
  from bokeh.core.validation import check_integrity, process_validation_issues
  from _util_models import check_properties_existence
  from bokeh.models import Range1d, DataRange1d, FactorRange
label_desc: Use image node_id 6 for calling the Test_Range1d obj's underlying member method code with example usage: obj.test_init_with_int() without return types