code: def test_gwo_calculate_coefficients():
      new_gwo = gwo.GWO()
  
      A, C = new_gwo._calculate_coefficients(1)
  
      assert A[0] != 0
      assert C[0] != 0
  
imports: import numpy
  from opytimizer.optimizers.population import gwo
  from opytimizer.spaces import search
label_desc: Use image node_id 1 for calling a global function with example usage: test_gwo_calculate_coefficients() without return types