class_docstr: Tests that the Barrier gate is correct.
class_docstr_tok: ["Tests","that","the","Barrier","gate","is","correct","."]
docstr: Test that if `only_visual=True`, the operation simplifies to the identity.
docstr_tok: ["Test","that","if","`","only_visual=True","`",",","the","operation","simplifies","to","the","identity","."]
code: def test_simplify_only_visual_one_wire(self):
      """Test that if `only_visual=True`, the operation simplifies to the identity."""
      op = qml.Barrier(wires="a", only_visual=True)
      simplified = op.simplify()
      assert qml.equal(simplified, qml.Identity("a"))
  
imports: import pytest
  import numpy
  from pennylane import Snapshot
  import pennylane
label_desc: Use image node_id 7 for calling the TestBarrier obj's underlying member method code with example usage: obj.test_simplify_only_visual_one_wire() without return types