class_docstr: Test the functions in qutrit_mixed/initialize_state.py
class_docstr_tok: ["Test","the","functions","in","qutrit_mixed\/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 / np.sqrt(9)] * 9, like=interface),
          wires=[0, 1],
      )
      state = create_initial_state([0, 1], prep_operation=prep_op)
      expected = np.reshape([1 / 9] * 81, [3, 3, 3, 3])
  
      assert qml.math.allequal(state, expected)
      if interface == "autograd":
          assert qml.math.get_interface(state) == "numpy"
      else:
          assert qml.math.get_interface(state) == interface
  
file_path: pennylane/tests/devices/qutrit_mixed/test_qutrit_mixed_initialize_state.py
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.devices.qutrit_mixed import create_initial_state
  from pennylane import QutritBasisState
  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