code: def test_repr():
      """Test the repr for a flip sign operator."""
      op = qml.FlipSign([0, 1], wires=("a", "b"))
      expected = "FlipSign((0, 1), wires=['a', 'b'])"
      assert repr(op) == expected
  
file_path: pennylane/tests/templates/test_subroutines/test_flip_sign.py
imports: import pytest
  from pennylane import numpy
  import pennylane
label_desc: Use image node_id 2 for calling a global function with example usage: test_repr() without return types