+# Copyright 2014 MINES ParisTech
+#
+# This file is part of Linpy.
+#
+# Linpy 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 3 of the License, or
+# (at your option) any later version.
+#
+# Linpy 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 Linpy. If not, see <http://www.gnu.org/licenses/>.
+
import functools
import unittest
from ..linexprs import symbols
from ..polyhedra import *
-
-
-try:
- import sympy
- def _requires_sympy(func):
- @functools.wraps(func)
- def wrapper(self):
- return func(self)
- return wrapper
-except ImportError:
- def _requires_sympy(func):
- @functools.wraps(func)
- def wrapper(self):
- raise unittest.SkipTest('SymPy is not available')
- return wrapper
+from .libhelper import requires_sympy
class TestPolyhedron(unittest.TestCase):
self.square = Polyhedron(inequalities=[x, 1 - x, y, 1 - y])
def test_symbols(self):
- self.assertCountEqual(self.square.symbols, ['x', 'y'])
+ self.assertTupleEqual(self.square.symbols, symbols('x y'))
def test_dimension(self):
self.assertEqual(self.square.dimension, 2)
def test_isuniverse(self):
self.assertFalse(self.square.isuniverse())
- @_requires_sympy
+ @requires_sympy
def test_fromsympy(self):
+ import sympy
sp_x, sp_y = sympy.symbols('x y')
self.assertEqual(Polyhedron.fromsympy((sp_x >= 0) & (sp_x <= 1) &
(sp_y >= 0) & (sp_y <= 1)), self.square)
- @_requires_sympy
+ @requires_sympy
def test_tosympy(self):
+ import sympy
sp_x, sp_y = sympy.symbols('x y')
self.assertEqual(self.square.tosympy(),
sympy.And(-sp_x + 1 >= 0, -sp_y + 1 >= 0, sp_x >= 0, sp_y >= 0))