code: def test_minus(self, device, dtype, batch_size):
      data = self._make_rand_data(device, dtype, batch_size)
      q = Quaternion(data)
      q = q.to(device, dtype)
      self.assert_close(-q, -data)
  
imports: import pytest
  import torch
  from kornia.geometry.quaternion import Quaternion
  from kornia.testing import assert_close
label_desc: Use image node_id 7 for calling the TestQuaternion obj's underlying member method code with example usage: obj.test_minus(device, dtype, batch_size) without return types