Polyhedron() constructor can return Empty or Universe

[linpy.git] / linpy / tests / test_polyhedra.py

diff --git a/linpy/tests/test_polyhedra.py b/linpy/tests/test_polyhedra.py
index d50f0f1..d0ebe57 100644 (file)
--- a/linpy/tests/test_polyhedra.py
+++ b/linpy/tests/test_polyhedra.py
@@ -35,13 +35,9 @@ class TestPolyhedron(unittest.TestCase):
     def test_dimension(self):
         self.assertEqual(self.square.dimension, 2)
 
     def test_dimension(self):
         self.assertEqual(self.square.dimension, 2)
 

-    def test_str(self):
-        self.assertEqual(str(self.square),
-            'And(Ge(x, 0), Ge(-x + 1, 0), Ge(y, 0), Ge(-y + 1, 0))')
-

     def test_repr(self):
         self.assertEqual(repr(self.square),
     def test_repr(self):
         self.assertEqual(repr(self.square),

-            "And(Ge(x, 0), Ge(-x + 1, 0), Ge(y, 0), Ge(-y + 1, 0))")
+            "And(0 <= x, x <= 1, 0 <= y, y <= 1)")

 
     def test_fromstring(self):
         self.assertEqual(Polyhedron.fromstring('{x >= 0, -x + 1 >= 0, '
 
     def test_fromstring(self):
         self.assertEqual(Polyhedron.fromstring('{x >= 0, -x + 1 >= 0, '