def test_expr_to_grb_expr_w_expr(self):
model = grb.Model()
prob = Prob(model)
expr = Expr(f)
bexpr = BoundExpr(f, None)
with self.assertRaises(Exception) as e:
prob._expr_to_grb_expr(bexpr)
self.assertTrue("Expression cannot be converted" in e.exception.message)
def test_expr_to_grb_expr_w_expr(self):
model = grb.Model()
prob = Prob(model)
expr = Expr(f)
bexpr = BoundExpr(f, None)
with self.assertRaises(Exception) as e:
prob._expr_to_grb_expr(bexpr)
self.assertTrue(
"Expression cannot be converted" in e.exception.message)
def test_expr_to_grb_expr_w_comp_expr(self):
model = grb.Model()
prob = Prob(model)
aff = AffExpr(-2 * np.ones((1, 1)), np.zeros((1, 1)))
val = np.zeros((1, 1))
cexpr = CompExpr(aff, val)
bexpr = BoundExpr(cexpr, None)
with self.assertRaises(Exception) as e:
prob._expr_to_grb_expr(bexpr)
self.assertTrue("Comparison" in e.exception.message)
def test_expr_to_grb_expr_w_comp_expr(self):
model = grb.Model()
prob = Prob(model)
aff = AffExpr(-2*np.ones((1,1)), np.zeros((1,1)))
val = np.zeros((1,1))
cexpr = CompExpr(aff, val)
bexpr = BoundExpr(cexpr, None)
with self.assertRaises(Exception) as e:
prob._expr_to_grb_expr(bexpr)
self.assertTrue("Comparison" in e.exception.message)