class_docstr: Test the functions in initialize_state.py
class_docstr_tok: ["Test","the","functions","in","initialize_state.py"]
docstr: Tests that create_initial_state works with a state-prep operation.
docstr_tok: ["Tests","that","create_initial_state","works","with","a","state-prep","operation","."]
code: def test_create_initial_state_with_state_prep(self, interface):
      """Tests that create_initial_state works with a state-prep operation."""
      prep_op = self.DefaultPrep(
          qml.math.array([1 / 2] * 4, like=interface), wires=[0, 1]
      )
      state = create_initial_state([0, 1], prep_operation=prep_op)
      assert qml.math.allequal(state, [1 / 2] * 4)
      assert qml.math.get_interface(state) == interface
  
file_path: pennylane/tests/devices/qubit/test_initialize_state.py
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.devices.qubit import create_initial_state
  from pennylane.operation import StatePrepBase
label_desc: Use image node_id 2 for calling the TestInitializeState obj's underlying member method code with example usage: obj.test_create_initial_state_with_state_prep(interface) without return types