skip if SSL problem in cactus web service connection

ippisite/ippidb/tests/tests.py

@@ -3,6 +3,7 @@ iPPI-DB unit tests
 """
 import json
 import re
+from ssl import SSLError
 
 from django.contrib.auth import get_user_model
 from django.core.management import call_command
@@ -768,9 +769,12 @@ class TestConvertSMILESToIUPAC(TestCase):
     def test_valid(self):
         smiles_to_iupacs = {"CCC": "propane"}
         for smiles, expected_iupac in smiles_to_iupacs.items():
-            self.assertEqual(
-                convert_smiles_to_iupac(smiles).lower(), expected_iupac.lower()
-            )
+            try:
+                self.assertEqual(
+                    convert_smiles_to_iupac(smiles).lower(), expected_iupac.lower()
+                )
+            except SSLError:
+                self.skipTest("SSL connection issue with the CACTUS WS, skipping")
 
 
 class DuplicateGeneNameTestCase(TestCase):