code: def test_de_params():
      params = {"CR": 0.9, "F": 0.7}
  
      new_de = de.DE(params=params)
  
      assert new_de.CR == 0.9
  
      assert new_de.F == 0.7
  
imports: import numpy
  from opytimizer.optimizers.evolutionary import de
  from opytimizer.spaces import search
label_desc: Use image node_id 1 for calling a global function with example usage: test_de_params() without return types