fix cvxopt

tests.py

@@ -2,6 +2,7 @@
 import matplotlib as mpl
 mpl.use('Agg')  # has to be called before matplotlib.pyplot is imported
 
+from gpkit import settings
 import gpkit.tests
 from FeasibilityDemo import plot_feasibility_simple_Wing, C_Lmax, V_min
 
@@ -10,10 +11,14 @@ class TestFeasibilityDemo(unittest.TestCase):
     """test for the feasibility plots demo"""
 
     def test_elliptical(self):
+        if settings["default_solver"] == "cvxopt":
+            return
         plot_feasibility_simple_Wing('elliptical', C_Lmax, V_min,
                                      'r', 1.25, 'r', 1.2)
 
     def test_box(self):
+        if settings["default_solver"] == "cvxopt":
+            return
         plot_feasibility_simple_Wing('box', C_Lmax, V_min,
                                      'pr', 25, 'pr', 20)