class_docstr: Test Evolution(Exp) class that takes a parameter x and a generator G and defines an evolution exp(ixG)
docstr: Test that qml.generator will return generator if it is_hermitian, but is not a subclass of Observable
docstr_tok: ["Test","that","qml.generator","will","return","generator","if","it","is_hermitian",",","but","is","not","a","subclass","of","Observable"]
code: def test_generator_not_observable_class(self, base):
      """Test that qml.generator will return generator if it is_hermitian, but is not a subclass of Observable"""
      op = Evolution(base, 1)
      gen, c = qml.generator(op)
      assert qml.equal(gen if c == 1 else qml.s_prod(c, gen), base)
  
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.ops.op_math import Evolution, Exp
label_desc: Use image node_id 17 for calling the TestEvolution obj's underlying member method code with example usage: obj.test_generator_not_observable_class(base) without return types