code: def test_solve_equivalence():
      # For toeplitz matrices, solve_toeplitz() should be equivalent to solve().
      random = np.random.RandomState(1234)
      for n in (1, 2, 3, 10):
          c = random.randn(n)
          if random.rand() < 0.5:
              c = c + 1j * random.randn(n)
          r = random.randn(n)
          if random.rand() < 0.5:
              r = r + 1j * random.randn(n)
          y = random.randn(n)
          if random.rand() < 0.5:
              y = y + 1j * random.randn(n)
  
          # Check equivalence when both the column and row are provided.
          actual = solve_toeplitz((c, r), y)
          desired = solve(toeplitz(c, r=r), y)
          assert_allclose(actual, desired)
  
          # Check equivalence when the column is provided but not the row.
          actual = solve_toeplitz(c, b=y)
          desired = solve(toeplitz(c), y)
          assert_allclose(actual, desired)
  
file_path: catboost/contrib/python/scipy/py3/scipy/linalg/tests/test_solve_toeplitz.py
imports: import numpy
  from scipy.linalg._solve_toeplitz import levinson
  from scipy.linalg import solve, toeplitz, solve_toeplitz
  from numpy.testing import assert_equal, assert_allclose
  import pytest
  from pytest import raises
label_desc: Use image node_id 1 for calling a global function with example usage: test_solve_equivalence() without return types