code: def check_case(self, a, b, c):
      x = solve_sylvester(a, b, c)
      assert_array_almost_equal(np.dot(a, x) + np.dot(x, b), c)
  
imports: import os
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_allclose
  import pytest
  from pytest import raises
  from scipy.linalg import solve_sylvester
  from scipy.linalg import solve_continuous_lyapunov, solve_discrete_lyapunov
  from scipy.linalg import solve_continuous_are, solve_discrete_are
  from scipy.linalg import block_diag, solve, LinAlgError
  from scipy.sparse._sputils import matrix
label_desc: Use image node_id 1 for calling the TestSolveSylvester obj's underlying member method code with example usage: obj.check_case(a, b, c) without return types