code: def test_shape(self, batch_size, device, dtype):
      B = batch_size
      vec = torch.rand(B, 3, device=device, dtype=dtype)
      cross_product_matrix = epi.cross_product_matrix(vec)
      assert cross_product_matrix.shape == (B, 3, 3)
  
file_path: kornia/test/geometry/epipolar/test_numeric.py
imports: import pytest
  import torch
  from torch.autograd import gradcheck
  import kornia
  import kornia.geometry.epipolar
  from kornia.testing import assert_close
label_desc: Use image node_id 2 for calling the TestSkewSymmetric obj's underlying member method code with example usage: obj.test_shape(batch_size, device, dtype) without return types