code: def test_empty_input():
      G = nx.Graph()
      assert [] == list(nx.k_edge_components(G, k=5))
      assert [] == list(nx.k_edge_subgraphs(G, k=5))
  
      G = nx.DiGraph()
      assert [] == list(nx.k_edge_components(G, k=5))
      assert [] == list(nx.k_edge_subgraphs(G, k=5))
  
imports: import itertools
  import pytest
  import networkx
  from networkx.algorithms.connectivity import EdgeComponentAuxGraph, bridge_components
  from networkx.algorithms.connectivity.edge_kcomponents import general_k_edge_subgraphs
  from networkx.utils import pairwise
label_desc: Use image node_id 8 for calling a global function with example usage: test_empty_input() without return types