code: def test_log_softmax_1d(self):
      x = np.random.random(5)
      result = activations.log_softmax(x)
      expected = _ref_log_softmax(x)
      self.assertAllClose(result, expected, rtol=1e-05)
  
imports: import numpy
  from keras import activations
  from keras import backend
  from keras import testing
label_desc: Use image node_id 11 for calling the ActivationsTest obj's underlying member method code with example usage: obj.test_log_softmax_1d() without return types