code: def test_more_values_of_expected_type(self):
      multiplexer = Multiplexer(int)
      with pytest.raises(
          ValueError,
          match="Multiplexer expects only one input, but 3 were received.",
      ):
          multiplexer.run(value=[2, 3, 4])
  
imports: import pytest
  from haystack.components.others import Multiplexer
label_desc: Use image node_id 4 for calling the TestMultiplexer obj's underlying member method code with example usage: obj.test_more_values_of_expected_type() without return types