class_docstr: Unit tests for the properties of the HardwareHamiltonian class.
class_docstr_tok: ["Unit","tests","for","the","properties","of","the","HardwareHamiltonian","class","."]
docstr: Test repr method returns expected string
docstr_tok: ["Test","repr","method","returns","expected","string"]
code: def test__repr__(self):
      """Test repr method returns expected string"""
      test_example = HardwareHamiltonian(
          coeffs=[2],
          observables=[qml.PauliY(8)],
          pulses=[HardwarePulse(5, 6, 7, 8)],
          reorder_fn=_reorder_parameters,
      )
      str = repr(test_example)
      assert str == "HardwareHamiltonian: terms=1"
  
imports: import numpy
  import pytest
  import pennylane
  from pennylane.pulse import HardwareHamiltonian, drive, rydberg_interaction
  from pennylane.pulse.hardware_hamiltonian import HardwarePulse, AmplitudeAndPhase, amplitude_and_phase, _reorder_parameters
  from pennylane.pulse.transmon import TransmonSettings
  from pennylane.pulse.rydberg import RydbergSettings
  from pennylane.wires import Wires
label_desc: Use image node_id 4 for calling the TestHardwareHamiltonian obj's underlying member method code with example usage: obj.test__repr__() without return types