Right so I think the skip condition in order to avoid false failures should be:
`@unittest.skipIf(connection.ops.max_name_length() > 74`
but it would be better if we could keep the skip condition as it is so the test is run on all databases and automatically generate a model that has a field name with length `connection.ops.max_name_length() + 1`

If you're still unsure about this, let's sync up on IRC.