code: def test_valid_constructor(self):
      instance = WrappingPathway(self.pA, self.pB, self.cylinder)
      assert isinstance(instance, WrappingPathway)
      assert hasattr(instance, "attachments")
      assert len(instance.attachments) == 2
      assert isinstance(instance.attachments[0], Point)
      assert instance.attachments[0] == self.pA
      assert isinstance(instance.attachments[1], Point)
      assert instance.attachments[1] == self.pB
      assert hasattr(instance, "geometry")
      assert isinstance(instance.geometry, WrappingGeometryBase)
      assert instance.geometry == self.cylinder
  
imports: import pytest
  from sympy import Rational, Symbol, cos, pi, sin, sqrt
  from sympy.physics.mechanics import Force, LinearPathway, ObstacleSetPathway, PathwayBase, Point, ReferenceFrame, WrappingCylinder, WrappingGeometryBase, WrappingPathway, WrappingSphere, dynamicsymbols
  from sympy.simplify.simplify import simplify
label_desc: Use image node_id 3 for calling the TestWrappingPathway obj's underlying member method code with example usage: obj.test_valid_constructor() without return types