Move unit tests to the appropriate directory

[gennad]

I noticed that the unit tests are intermingled with the application logic source code, do we need to move them to the appropriate tests directory as it normally is in the most of python projects I worked with?

[dschuyler]

Ah, I'm used to the guidance of putting tests with the code. I suppose that's more for unit tests.

Hmm, for that matter (while I know the difference) I have unit tests, integration tests, and system tests mingled together.

WDYT of moving the integration tests to a tests directory, but keeping the unit tests with the code?