mirror of https://github.com/Qiskit/qiskit.git
42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
# This code is part of Qiskit.
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#
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# (C) Copyright IBM 2020.
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#
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# This code is licensed under the Apache License, Version 2.0. You may
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# obtain a copy of this license in the LICENSE.txt file in the root directory
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# of this source tree or at http://www.apache.org/licenses/LICENSE-2.0.
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#
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# Any modifications or derivative works of this code must retain this
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# copyright notice, and modified files need to carry a notice indicating
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# that they have been altered from the originals.
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"""Tests ClassicalFunction as a gate."""
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import unittest
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from qiskit import QuantumCircuit
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from qiskit.circuit.library.standard_gates import XGate
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from qiskit.utils.optionals import HAS_TWEEDLEDUM
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from test import QiskitTestCase # pylint: disable=wrong-import-order
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if HAS_TWEEDLEDUM:
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from . import examples
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from qiskit.circuit.classicalfunction import classical_function as compile_classical_function
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@unittest.skipUnless(HAS_TWEEDLEDUM, "Tweedledum is required for these tests.")
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class TestOracleDecomposition(QiskitTestCase):
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# pylint: disable=possibly-used-before-assignment
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"""Tests ClassicalFunction.decomposition."""
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def test_grover_oracle(self):
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"""grover_oracle.decomposition"""
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oracle = compile_classical_function(examples.grover_oracle)
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quantum_circuit = QuantumCircuit(5)
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quantum_circuit.append(oracle, [2, 1, 0, 3, 4])
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expected = QuantumCircuit(5)
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expected.append(XGate().control(4, ctrl_state="1010"), [2, 1, 0, 3, 4])
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self.assertEqual(quantum_circuit.decompose(), expected)
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