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Add test for exceptional behavior when initializing PauliList.from_symplectic #13751

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Add test for exceptional behavior when initializing PauliList.from_symplectic #13751

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3dcf39a
add test for exceptional behavior PauliList.from_symplectic
MattePalte Jan 28, 2025
531156a
fix black format
MattePalte Jan 28, 2025
c0eb0f8
add docstring + use self.assertRaisesRegex
MattePalte Jan 28, 2025
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8 changes: 8 additions & 0 deletions test/python/quantum_info/operators/symplectic/test_pauli_list.py
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Expand Up @@ -221,6 +221,14 @@ def test_init_from_settings(self):
from_settings = PauliList(**pauli_list.settings)
self.assertEqual(pauli_list, from_settings)

def test_from_symplectic_phase_check(self):
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You'll likely need a docstring on this function to satisfy the linter (though tbh, we'd disable the rule for the test suite if it was easier to give pytest different configurations based on file path).

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Done. Thanks. Also checked locally to pass tox -elint.

"""Test the from_symplectic method of PauliList for phase dimension check."""
z = np.array([[0], [0]])
x = np.array([[0], [0]])
phase = np.array([[0], [0]]) # 2D phase
with self.assertRaisesRegex(ValueError, "phase should be at most 1D but has 2 dimensions."):
PauliList.from_symplectic(z, x, phase)


@ddt
class TestPauliListProperties(QiskitTestCase):
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