test module is an extension and/or set of SQL tests which is primarily or entirely intended for testing PostgreSQL and/or to serve as example code.
Test modules are located (from PostgreSQL 9.5 onwards) in the source code directory src/test/modules/. They do not form part of normal PostgreSQL distributions or packages and are intended for use when working directlywith the source code.
Available test modules
As of PostgreSQL 13, following modules exist:
- PostgreSQL 13
- PostgreSQL 12
- PostgreSQL 11
- PostgreSQL 9.6
- PostgreSQL 9.5