code: def test_graph_create_from_array():
      """Test the creation of a graph from a sparse coo_matrix"""
      a = np.random.randn(5, 5)
      wg = wgraph_from_adjacency(a)
      b = wg.to_coo_matrix()
      assert_array_equal(a, b.todense())
  
imports: import numpy
  import numpy.random
  from numpy.testing import assert_almost_equal, assert_array_almost_equal, assert_array_equal
  from ..graph import WeightedGraph, complete_graph, concatenate_graphs, eps_nn, knn, mst, wgraph_from_3d_grid, wgraph_from_adjacency, wgraph_from_coo_matrix
label_desc: Use image node_id 43 for calling a global function with example usage: test_graph_create_from_array() without return types