When we decided to apply unit tests in PostgreSQL, we noticed there were two tools with the same name: PGUnit, but when we tried them, we realized that they share the fact of simplifying the tests but, unlike the previous one, the pgunit we are using has more recent updates. In the following steps, we will take care of applying it to our project and evaluating its behavior.
The website for simple pgunit is found here: https://github.com/adrianandrei-ca/pgunit.