mirror of https://github.com/Qiskit/qiskit.git
58 lines
2.6 KiB
Python
58 lines
2.6 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 the classicalfunction parser."""
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import unittest
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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 bad_examples as examples
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from qiskit.circuit.classicalfunction import ClassicalFunctionParseError
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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 TestParseFail(QiskitTestCase):
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# pylint: disable=possibly-used-before-assignment
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"""Tests bad_examples with the classicalfunction parser."""
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def assertExceptionMessage(self, context, message):
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"""Asserts the message of an exception context"""
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self.assertTrue(message in context.exception.args[0])
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def test_id_bad_return(self):
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"""Trying to parse examples.id_bad_return raises ClassicalFunctionParseError"""
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with self.assertRaises(ClassicalFunctionParseError) as context:
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compile_classical_function(examples.id_bad_return)
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self.assertExceptionMessage(context, "return type error")
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def test_id_no_type_arg(self):
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"""Trying to parse examples.id_no_type_arg raises ClassicalFunctionParseError"""
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with self.assertRaises(ClassicalFunctionParseError) as context:
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compile_classical_function(examples.id_no_type_arg)
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self.assertExceptionMessage(context, "argument type is needed")
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def test_id_no_type_return(self):
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"""Trying to parse examples.id_no_type_return raises ClassicalFunctionParseError"""
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with self.assertRaises(ClassicalFunctionParseError) as context:
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compile_classical_function(examples.id_no_type_return)
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self.assertExceptionMessage(context, "return type is needed")
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def test_out_of_scope(self):
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"""Trying to parse examples.out_of_scope raises ClassicalFunctionParseError"""
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with self.assertRaises(ClassicalFunctionParseError) as context:
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compile_classical_function(examples.out_of_scope)
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self.assertExceptionMessage(context, "out of scope: c")
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