def test_permute(self, permutation, expected_pauli):
"""Test the permute method."""
pauli_sum = PauliSumOp(SparsePauliOp.from_list([("XYZ", 1)]))
expected = PauliSumOp(SparsePauliOp.from_list([(expected_pauli, 1)]))
permuted = pauli_sum.permute(permutation)
with self.subTest(msg="test permutated object"):
self.assertEqual(permuted, expected)
with self.subTest(msg="test original object is unchanged"):
original = PauliSumOp(SparsePauliOp.from_list([("XYZ", 1)]))
self.assertEqual(pauli_sum, original)
def test_permute(self):
"""permute test"""
pauli_sum = PauliSumOp(SparsePauliOp((X ^ Y ^ Z).primitive))
expected = PauliSumOp(SparsePauliOp((X ^ I ^ Y ^ Z ^ I).primitive))
self.assertEqual(pauli_sum.permute([1, 2, 4]), expected)
pauli_sum = PauliSumOp(SparsePauliOp((X ^ Y ^ Z).primitive))
expected = PauliSumOp(SparsePauliOp((Z ^ Y ^ X).primitive))
self.assertEqual(pauli_sum.permute([2, 1, 0]), expected)
with self.assertRaises(OpflowError):
pauli_sum.permute([1, 2, 1])
with self.assertRaises(OpflowError):
pauli_sum.permute([1, 2, -1])
def test_permute(self):
""" permute test """
pauli_sum = PauliSumOp(SparsePauliOp((X ^ Y ^ Z).primitive))
expected = PauliSumOp(SparsePauliOp((X ^ I ^ Y ^ Z ^ I).primitive))
self.assertEqual(pauli_sum.permute([1, 2, 4]), expected)
def test_permute_invalid(self, permutation):
"""Test the permute method raises an error on invalid permutations."""
pauli_sum = PauliSumOp(SparsePauliOp((X ^ Y ^ Z).primitive))
with self.assertRaises(OpflowError):
pauli_sum.permute(permutation)
