Fix pytest issues with this branch

test/test_evaluate/test_precedence.py

@@ -4,10 +4,10 @@ import pytest
 
 
 @pytest.mark.parametrize('source', [
-    '1 == 1',
-    '1.0 == 1',
+    pytest.param('1 == 1'),
+    pytest.param('1.0 == 1'),
     # Unfortunately for now not possible, because it's a typeshed object.
-    pytest.mark.xfail('... == ...')
+    pytest.param('... == ...', marks=pytest.mark.xfail),
 ])
 def test_equals(Script, environment, source):
     if environment.version_info.major < 3: