code: def test_full_raises_on_oversampling():
      """[Base] FoldIndex: check raises error."""
      with np.testing.assert_raises(ValueError):
          FoldIndex(100, X)
  
imports: import os
  import subprocess
  import numpy
  from mlens import config
  from mlens.utils import IdTrain
  from mlens.index import FoldIndex, BlendIndex, SubsetIndex, TemporalIndex, ClusteredSubsetIndex, FullIndex
  from mlens.index.base import partition, prune_train
label_desc: Use image node_id 9 for calling a global function with example usage: test_full_raises_on_oversampling() without return types