code: def test_basic(self):
      a = leslie([1, 2, 3], [0.25, 0.5])
      expected = array(
          [[1.0, 2.0, 3.0], [0.25, 0.0, 0.0], [0.0, 0.5, 0.0]]
      )
      assert_array_equal(a, expected)
  
imports: import pytest
  import numpy
  from numpy import arange, array, eye, copy, sqrt
  from numpy.testing import assert_equal, assert_array_equal, assert_array_almost_equal, assert_allclose
  from pytest import raises
  from scipy.fft import fft
  from scipy.special import comb
  from scipy.linalg import toeplitz, hankel, circulant, hadamard, leslie, dft, companion, kron, block_diag, helmert, hilbert, invhilbert, pascal, invpascal, fiedler, fiedler_companion, eigvals, convolution_matrix
  from numpy.linalg import cond
label_desc: Use image node_id 2 for calling the TestLeslie obj's underlying member method code with example usage: obj.test_basic() without return types