class_docstr: Tests that the Barrier gate is correct.
class_docstr_tok: ["Tests","that","the","Barrier","gate","is","correct","."]
docstr: Test that barrier does not raise an error when instantiated with wires=[].
docstr_tok: ["Test","that","barrier","does","not","raise","an","error","when","instantiated","with","wires=","[","]","."]
code: def test_barrier_empty_wire_list_no_error(self):
      """Test that barrier does not raise an error when instantiated with wires=[]."""
      barrier = qml.Barrier(wires=[])
      assert isinstance(barrier, qml.Barrier)
  
imports: import pytest
  import numpy
  from pennylane import Snapshot
  import pennylane
label_desc: Use image node_id 6 for calling the TestBarrier obj's underlying member method code with example usage: obj.test_barrier_empty_wire_list_no_error() without return types