code: def test_dont_change_x(self):
      X = np.random.random((20, 4))
      X_orig = X.copy()
      MulticoreTSNE(n_iter=400).fit_transform(X)
      np.testing.assert_array_equal(X, X_orig)
  
file_path: Multicore-TSNE/MulticoreTSNE/tests/test_base.py
imports: import unittest
  from functools import partial
  import numpy
  from sklearn.datasets import make_blobs
  from sklearn.metrics import pairwise_distances
  from MulticoreTSNE import MulticoreTSNE
label_desc: Use image node_id 5 for calling the TestMulticoreTSNE obj's underlying member method code with example usage: obj.test_dont_change_x() without return types