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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).
#
# Provides basic tests of the shared_ptr holder 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/>.
# NOTE: Since Regina 5.96, python references to packets never expire.
# Therefore we should never raise any exceptions in this test.
print("Constructor:")
print(Container())
print("Deleting parent:")
c = Container()
c1 = Container()
c.prepend(c1)
c = None
try:
print(c1)
except RuntimeError:
print("Got exception")
print("Deleting matriarch:")
c = Container()
c.prepend(Container())
c.firstChild().prepend(Container())
c1 = c.firstChild()
c2 = c.firstChild().firstChild()
c = None
try:
print(c1)
except RuntimeError:
print("Got exception")
try:
print(c2)
except RuntimeError:
print("Got exception")
print("Multiple references:")
c = Container()
c1 = Container()
c2 = Container()
c.prepend(c1)
c1.prepend(c2)
print(c)
print(c1)
print(c2)
c1 = None
print(c)
print(c2)
d = c2.root()
c = None
print(c2)
e = c2.root()
print(c2)
e = None
print(c2)
d = None
try:
print(c2)
except RuntimeError:
print("Got exception")
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