Why does redmine not use the development and test environments?

Question

Why does redmine not use the development and test environments?

In the official installation guide they only show one environment when setting up the databases, advise to run bundler skipping dev and test, and run the rails server in production mode.

Answer 1

I think this instruction describes the installation process only for server (which runs in Production mode). I think it is done this way not to confuse new users (who do not have a lot of knowledge in Rails)

You can easily use this instruction to setup Redmine locally (I did it successfully several times ;). In order to install Redmine locally you should change only few points in the instruction.