class_docstr: TSNEVisualizer tests
class_docstr_tok: ["TSNEVisualizer","tests"]
docstr: Verify the pipeline creation step for TSNE
docstr_tok: ["Verify","the","pipeline","creation","step","for","TSNE"]
code: def test_make_pipeline(self):
      """
      Verify the pipeline creation step for TSNE
      """
  
      tsne = TSNEVisualizer()  # Should not cause an exception.
      assert tsne.transformer_ is not None
  
      svdp = tsne.make_transformer("svd", 90)
      assert len(svdp.steps) == 2
  
      pcap = tsne.make_transformer("pca")
      assert len(pcap.steps) == 2
  
      none = tsne.make_transformer(None)
      assert len(none.steps) == 1
  
imports: import pytest
  from unittest import mock
  from yellowbrick.text.tsne import *
  from tests.base import VisualTestCase
  from yellowbrick.datasets import load_hobbies
  from yellowbrick.exceptions import YellowbrickValueError
  from sklearn.manifold import TSNE
  from sklearn.datasets import make_classification
  from sklearn.feature_extraction.text import TfidfVectorizer
label_desc: Use image node_id 2 for calling the TestTSNE obj's underlying member method code with example usage: obj.test_make_pipeline() without return types