code: def test_argsort_k_largest_empty():
      x = np.array([0])
      empty = np.array([])
      assert _np_eq(x[argsort_k_largest(x, 0)], empty)
      assert _np_eq(x[argsort_k_largest_positive(x, None)], empty)
  
file_path: eli5/tests/test_utils.py
imports: from __future__ import absolute_import
  import numpy
  import scipy.sparse
  from hypothesis import given, assume, settings, HealthCheck
  from hypothesis.strategies import integers
  from eli5.utils import argsort_k_largest, argsort_k_largest_positive, argsort_k_smallest, vstack
  from .utils import rnd_len_arrays
label_desc: Use image node_id 7 for calling a global function with example usage: test_argsort_k_largest_empty() without return types