code: def test_smoke(self, device, dtype):
      coeffs = torch.rand(1, 3, device=device, dtype=dtype)
      roots = solver.solve_quadratic(coeffs)
      assert roots.shape == (1, 2)
  
file_path: kornia/test/geometry/solvers/test_polynomial_solver.py
imports: import pytest
  import torch
  from torch.autograd import gradcheck
  import kornia.geometry.solvers
  from kornia.testing import assert_close
label_desc: Use image node_id 1 for calling the TestQuadraticSolver obj's underlying member method code with example usage: obj.test_smoke(device, dtype) without return types