mirror of https://github.com/Qiskit/qiskit.git
71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
# This code is part of Qiskit.
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#
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# (C) Copyright IBM 2017, 2018.
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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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"""FixedPoint pass testing"""
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import unittest
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from qiskit.transpiler.passes import FixedPoint
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from test import QiskitTestCase # pylint: disable=wrong-import-order
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class TestFixedPointPass(QiskitTestCase):
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"""Tests for FixedPoint pass."""
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def setUp(self):
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super().setUp()
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self.pass_ = FixedPoint("property")
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self.pset = self.pass_.property_set
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self.dag = None # The pass do not read the DAG.
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def test_fixed_point_setting_to_none(self):
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"""Setting a property to None twice does not create a fixed-point."""
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self.pass_.property_set["property"] = None
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self.pass_.run(self.dag)
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self.pass_.property_set["property"] = None
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self.pass_.run(self.dag)
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self.assertFalse(self.pset["property_fixed_point"])
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def test_fixed_point_reached(self):
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"""Setting a property to the same value twice creates a fixed-point."""
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self.pset["property"] = 1
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self.pass_.run(self.dag)
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self.assertFalse(self.pset["property_fixed_point"])
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self.pset["property"] = 1
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self.pass_.run(self.dag)
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self.assertTrue(self.pset["property_fixed_point"])
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def test_fixed_point_not_reached(self):
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"""Setting a property with different values does not create a fixed-point."""
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self.pset["property"] = 1
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self.pass_.run(self.dag)
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self.assertFalse(self.pset["property_fixed_point"])
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self.pset["property"] = 2
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self.pass_.run(self.dag)
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self.assertFalse(self.pset["property_fixed_point"])
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def test_fixed_point_left(self):
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"""A fixed-point is not permanent."""
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self.pset["property"] = 1
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self.pass_.run(self.dag)
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self.assertFalse(self.pset["property_fixed_point"])
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self.pset["property"] = 1
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self.pass_.run(self.dag)
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self.assertTrue(self.pset["property_fixed_point"])
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self.pset["property"] = 2
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self.pass_.run(self.dag)
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self.assertFalse(self.pset["property_fixed_point"])
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if __name__ == "__main__":
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unittest.main()
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