Fix tox tests for python3.6

tests/test_util.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8; -*-
 
+import sys
 from unittest import TestCase
 from unittest.mock import patch, MagicMock
 
@@ -7,6 +8,8 @@ from unittest.mock import patch, MagicMock
 # behavior may ensue within some of the tests below
 import setuptools
 
+import pytest
+
 from wuttjamaican import util
 
 
@@ -20,12 +23,16 @@ class TestLoadEntryPoints(TestCase):
     def test_basic(self):
         # load some entry points which should "always" be present,
         # even in a testing environment.  basic sanity check
-        result = util.load_entry_points('console_scripts')
+        result = util.load_entry_points('console_scripts', ignore_errors=True)
         self.assertTrue(len(result) >= 1)
         self.assertIn('pip', result)
 
     def test_error(self):
 
+        # skip if < 3.8
+        if sys.version_info.major == 3 and sys.version_info.minor < 8:
+            pytest.skip("this requires python 3.8 for entry points via importlib")
+
         entry_point = MagicMock()
         entry_point.load.side_effect = NotImplementedError("just a testin")
 
@@ -79,7 +86,7 @@ class TestLoadEntryPoints(TestCase):
 
             # load some entry points which should "always" be present,
             # even in a testing environment.  basic sanity check
-            result = util.load_entry_points('console_scripts')
+            result = util.load_entry_points('console_scripts', ignore_errors=True)
             self.assertTrue(len(result) >= 1)
             self.assertIn('pip', result)
 

tox.ini

@@ -2,6 +2,11 @@
 [tox]
 envlist = py36, py37, py38, py39, py310, py311
 
+# TODO: can remove this when we drop py36 support
+# nb. need this for testing older python versions
+# https://tox.wiki/en/latest/faq.html#testing-end-of-life-python-versions
+requires = virtualenv<20.22.0
+
 [testenv]
 commands =
         pip install -U pip