code: def test_square(self):
      xmin, xmax = (-1, 1)
      ymin, ymax = (-2, 3)
      rect = LinearRing(
          [
              (xmin, ymin),
              (xmax, ymin),
              (xmax, ymax),
              (xmin, ymax),
              (xmin, ymin),
          ]
      )
      assert signed_area(rect) == pytest.approx(10.0)
  
file_path: shapely/shapely/tests/legacy/test_cga.py
imports: import unittest
  import pytest
  from shapely.geometry.polygon import LinearRing, orient, Polygon, signed_area
label_desc: Use image node_id 2 for calling the SignedAreaTestCase obj's underlying member method code with example usage: obj.test_square() without return types