code: def test_squared_norm(self, device, dtype, shape):
      p0 = Vector2.random(shape, device, dtype)
      res: Scalar = p0.squared_norm()
      assert res.shape == () if shape is None else shape
  
imports: import pytest
  import torch
  from kornia.geometry.vector import Scalar, Vector2, Vector3
  from kornia.testing import BaseTester
label_desc: Use image node_id 7 for calling the TestVector2 obj's underlying member method code with example usage: obj.test_squared_norm(device, dtype, shape) without return types