code: def test_wrong_num_leading_axes(self, DenseLayer, dummy_input_layer):
      with pytest.raises(ValueError) as exc:
          DenseLayer(dummy_input_layer, 5, num_leading_axes=3)
      assert "leaving no trailing axes" in exc.value.args[0]
      with pytest.raises(ValueError) as exc:
          DenseLayer(dummy_input_layer, 5, num_leading_axes=-4)
      assert "requesting more trailing axes" in exc.value.args[0]
  
imports: from mock import Mock
  import numpy
  import pytest
  import theano
  import lasagne
label_desc: Use image node_id 6 for calling the TestDenseLayer obj's underlying member method code with example usage: obj.test_wrong_num_leading_axes(DenseLayer, dummy_input_layer) without return types