code: def test_trivial(self):
      a = np.array([[1.0, 0.0], [0.0, 1.0]])
      b = np.array([[1.0]])
      c = np.array([2.0, 2.0]).reshape(-1, 1)
      x = solve_sylvester(a, b, c)
      assert_array_almost_equal(x, np.array([1.0, 1.0]).reshape(-1, 1))
  
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 3 for calling the TestSolveSylvester obj's underlying member method code with example usage: obj.test_trivial() without return types