class_docstr: Tests for the qml.is_unitary function.
docstr: Test the hermitian check with scalar products of hermitian operators.
docstr_tok: ["Test","the","hermitian","check","with","scalar","products","of","hermitian","operators","."]
code: def test_s_prod(self, op):
      """Test the hermitian check with scalar products of hermitian operators."""
      assert qml.is_unitary(qml.s_prod(1, op))
      assert not qml.is_unitary(qml.s_prod(2, op))
  
imports: import pytest
  import pennylane
label_desc: Use image node_id 3 for calling the TestIsUnitary obj's underlying member method code with example usage: obj.test_s_prod(op) without return types