Fix test and add posterior check

bilby/core/result.py

@@ -200,7 +200,8 @@ class Result(object):
             if len(dictionary) == 1 and 'data' in dictionary:
                 dictionary = dictionary['data']
             try:
-                dictionary['posterior'] = pd.DataFrame(dictionary['posterior'])
+                if isinstance(dictionary.get('posterior', None), dict):
+                    dictionary['posterior'] = pd.DataFrame(dictionary['posterior'])
                 return cls(**dictionary)
             except TypeError as e:
                 raise IOError("Unable to load dictionary, error={}".format(e))

test/gw_utils_test.py

@@ -159,10 +159,9 @@ class TestGWUtils(unittest.TestCase):
             0.1, 0, 0.6, 0.5, 0.6, 0.1, 0.8, 30.6, 23.2, 50, 0)
         self.assertTrue(len(a) == 7)
 
-    # def test_get_approximant(self):
-    #     with self.assertRaises(ValueError):
-    #         gwutils.lalsim_GetApproximantFromString(10)
-    #     self.assertEqual(gwutils.lalsim_GetApproximantFromString("IMRPhenomPV2"), 69)
+    def test_get_approximant(self):
+        with self.assertRaises(ValueError):
+            gwutils.lalsim_GetApproximantFromString(10)
 
     def test_lalsim_SimInspiralChooseFDWaveform(self):
         a = gwutils.lalsim_SimInspiralChooseFDWaveform(