[chore] fix lint violations in base/tests

Part-of: odoo/upgrade#5120

Author: KangOl

src/base/tests/test_moved0.py

@@ -12,6 +12,6 @@ def invariant(self):
         if util.version_gte("16.0"):
             # See https://github.com/odoo/odoo/commit/50767ef90eadeca2ed05b9400238af8bdbe77fb3
             self.skipTest("Starting Odoo 16, no more `moved0` columns are created")
-            return
+            return None
 
         return impl.get_moved0_columns(self.env.cr)

src/base/tests/test_util.py

@@ -56,6 +56,8 @@ def test_change_leaf(self):
             self.cr, "res.partner", "user_id", "user_id", "res.users", domain, adapter=self.mock_adapter
         )  # even if new==old the adapter must be called
         self.mock_adapter.assert_called_once()
+        # Ignore `boolean-positional-value-in-call` lint violations in the whole file
+        # ruff: noqa: FBT003
         self.mock_adapter.assert_called_with(domain[0], False, False)
         self.assertEqual(None, new_domain)
 
@@ -445,16 +447,17 @@ def setUpClass(cls):
     )
     def test_inherit_parents(self, model, expected):
         cr = self.env.cr
-        result = sorted(list(util.inherit_parents(cr, model)))
+        result = sorted(util.inherit_parents(cr, model))
         self.assertEqual(result, sorted(expected))
 
 
 class TestNamedCursors(UnitTestCase):
     @staticmethod
-    def exec(cr, which="", args=()):
+    def exec(cr, which="", args=()):  # noqa: A003
         cr.execute("SELECT * FROM ir_ui_view")
         if which:
             return getattr(cr, which)(*args)
+        return None
 
     @parametrize(
         [