[TrivialFix] Fix comment and function name typo error

Change-Id: I713dd471a76e82ee0a4471ea4e5f9dcb57227345

nova/db/sqlalchemy/api.py

@@ -622,7 +622,7 @@ def _compute_node_select(context, filters=None, limit=None, marker=None):
         select = select.where(cn_tbl.c.id > marker)
     if limit is not None:
         select = select.limit(limit)
-    # Explictly order by id, so we're not dependent on the native sort
+    # Explicitly order by id, so we're not dependent on the native sort
     # order of the underlying DB.
     select = select.order_by(asc("id"))
     return select

nova/tests/fixtures.py

@@ -284,7 +284,7 @@ class SingleCellSimple(fixtures.Fixture):
     @contextmanager
     def _fake_target_cell(self, context, target_cell):
         # NOTE(danms): Just pass through the context without actually
-        # targetting anything.
+        # targeting anything.
         yield context
 
 

nova/tests/unit/api/openstack/placement/test_util.py

@@ -123,7 +123,7 @@ class TestExtractJSON(test.NoDBTestCase):
                                   self.schema)
         self.assertIn('JSON does not validate', str(error))
 
-    def test_no_addtional_properties(self):
+    def test_no_additional_properties(self):
         error = self.assertRaises(webob.exc.HTTPBadRequest,
                                   util.extract_json,
                                   '{"name": "hello", "cow": "moo"}',

nova/tests/unit/virt/libvirt/fake_imagebackend.py

@@ -109,7 +109,7 @@ class ImageBackendFixture(fixtures.Fixture):
 
         disk = mock.create_autospec(imagebackend.Image)
 
-        # NOTE(mdbooth): fake_cache and fake_import_file are for compatiblity
+        # NOTE(mdbooth): fake_cache and fake_import_file are for compatibility
         # with existing tests which test got_files and imported_files. They
         # should be removed when they have no remaining users.
         disk.cache.side_effect = self._fake_cache