code: def test_overlap():
      assert overlap(0, 1, 0, 1) is True
      assert overlap(0, 0, 1, 1) is False
      assert overlap(0, 10, 5, 15) is True
      assert overlap(-10, 10, -20, -10) is True
      assert overlap(-9, 10, -20, -10) is False
  
imports: import math
  import pytest
  from hypothesis import given
  import hypothesis.strategies
  import numpy
  from pdftabextract.geom import pt, ptdist, vecangle, vecrotate, overlap, lineintersect, rect, rectcenter, rectarea, rectintersect, normalize_angle, normalize_angle_halfcircle, project_polarcoord_lines
label_desc: Use image node_id 6 for calling a global function with example usage: test_overlap() without return types