code: def test_buffer_cap_style_invalid():
      with pytest.raises(
          ValueError, match="'invalid' is not a valid option"
      ):
          shapely.buffer(point, 1, cap_style="invalid")
  
imports: import numpy
  import pytest
  import shapely
  from shapely import Geometry, GeometryCollection, GEOSException, LinearRing, LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon
  from shapely.testing import assert_geometries_equal
  from shapely.tests.common import all_types, empty, empty_line_string, empty_point, empty_polygon, ignore_invalid, line_string, multi_point, point, point_z
label_desc: Use image node_id 7 for calling a global function with example usage: test_buffer_cap_style_invalid() without return types