Add tests and support for enum names which are camel case. Fixes: #11…

[Apteryx0]

Description

Our org recently added alembic-postgresql-enum to our code-base, but we have legacy enums with camel-case names, which caused a very specific error just sql that renames the enum type to <enum>_old. The rename_type function expects arguments to be quoted - this changes ensures that the enum type name is.

Oh, I originally mistakenly edited test_exotic_column_name.py before realising it was the wrong test. I left it in there since I guess it does test CamelCase column names now...? :-)

Fixes: #110

Checklist

This pull request is:

• A documentation / typographical / small typing error fix
  • Good to go, no issue or tests are needed
• A short code fix
  • please include the issue number, and create an issue if none exists, which
    must include a complete example of the issue. one line code fixes without an
    issue and demonstration will not be accepted.
  • Please include: Fixes: #<issue number> in the commit message
  • please include tests. one line code fixes without tests will not be accepted.
• A new feature implementation
  • please include the issue number, and create an issue if none exists, which must
    include a complete example of how the feature would look.
  • Please include: Fixes: #<issue number> in the commit message
  • please include tests.

Have a nice day!