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# Regina - A Normal Surface Theory Calculator
# Python Test Suite Component
#
# Copyright (c) 2015-2025, Ben Burton
# For further details contact Ben Burton (bab@debian.org).
#
# Tests throwing and catching Regina's exception types.
#
# This file is a single component of Regina's python test suite. To run
# the python test suite, move to the main python directory in the source
# tree and run "make check".
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# As an exception, when this program is distributed through (i) the
# App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or
# (iii) Google Play by Google Inc., then that store may impose any
# digital rights management, device limits and/or redistribution
# restrictions that are required by its terms of service.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
t = Example3.poincare()
print(t.faces(2).size())
try:
print(t.faces(3).size())
print('ERROR: Did not throw exception')
except InvalidArgument:
pass
try:
print(t.faces(-1).size())
print('ERROR: Did not throw exception')
except InvalidArgument:
pass
t = ExampleSnapPea.whiteheadLink()
try:
print(t.filledAll())
print('ERROR: Did not throw exception')
except FailedPrecondition:
pass
dummy = t.fill(1,2,0)
dummy = t.fill(3,4,1)
print(t.filledAll().homology())
dummy = t.pachner(t.triangle(0))
try:
print(t.filledAll())
print('ERROR: Did not throw exception')
except SnapPeaIsNull:
pass
print(Rational(1,2).doubleApprox())
try:
print(Rational(1,0).doubleApprox())
print('ERROR: Did not throw exception')
except UnsolvedCase:
pass
s = SFSpace()
print(s.construct().homology())
s.addPuncture()
try:
print(s.construct())
print('ERROR: Did not throw exception')
except NotImplemented:
pass
t = Example3.poincare()
s = NormalSurfaces(t, NormalCoords.Standard)
t = None
print(s)
try:
t = s.triangulation()
print(t.isReadOnlySnapshot())
# TODO: subdivide(), due to a swap() in its internal implementation,
# actually throws a SnapshotWriteError from a triangulation destructor.
# This is *bad*, and moreover results in an exception that Python cannot
# catch.
# t.subdivide()
t.pachner(t.triangle(0))
print('ERROR: Did not throw exception')
except SnapshotWriteError:
pass
print('All done!')
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