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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 bindings for the different Triangulation3 constructors.
#
# 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/>.
def tri3From(*args):
try:
t = Triangulation3(*args)
print(t.size(), t.isoSig())
except InvalidArgument:
print('Could not construct')
except TypeError:
print('Invalid constructor arguments')
except Exception as e:
print('ERROR: Unexpected exception:', type(e))
# Empty
tri3From()
# Another triangulation
tri3From(Example3.figureEight())
# Another triangulation, without cloning properties
tri3From(Example3.figureEight(), False)
# Regina's SnapPeaTriangulation class
tri3From(ExampleSnapPea.whiteheadLink())
# Regina's SnapPeaTriangulation class, without cloning properties
tri3From(ExampleSnapPea.whiteheadLink(), False)
# Iso sig
tri3From('cPcbbbiht')
# Dehydration string
tri3From('cabbbbaei')
# SnapPea data file contents
tri3From(Example3.figureEight().snapPea())
# Junk (constructor should throw an exception)
tri3From('banana')
# Simulate what happens if we try to pass a SnapPy manifold or triangulation:
class SnapPyObject:
def _to_string(self):
return Example3.figureEight().snapPea()
class NotSnapPyObject:
def _other_string(self):
return Example3.figureEight().snapPea()
class JunkSnapPyObject:
def _other_string(self):
return 'banana'
class MisbehavedSnapPyObject:
def _to_string(self):
return 42
class UncallableSnapPyObject:
_to_string = 'cPcbbbiht'
tri3From(SnapPyObject())
tri3From(NotSnapPyObject())
tri3From(JunkSnapPyObject())
tri3From(MisbehavedSnapPyObject())
tri3From(UncallableSnapPyObject())
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