docstr: Test the matrix representation
docstr_tok: ["Test","the","matrix","representation"]
code: def test_matrix_representation(self, wires, tol):
      """Test the matrix representation"""
      res_static = Identity.compute_matrix(n_wires=len(wires))
      res_dynamic = Identity(wires=wires).matrix()
      expected = np.eye(int(2 ** len(wires)))
      assert np.allclose(res_static, expected, atol=tol)
      assert np.allclose(res_dynamic, expected, atol=tol)
  
file_path: pennylane/tests/ops/test_identity.py
imports: import numpy
  import pytest
  import pennylane
  from pennylane import Identity
label_desc: Use image node_id 7 for calling the TestIdentity obj's underlying member method code with example usage: obj.test_matrix_representation(wires, tol) without return types