Description

The current tests for gnrc_tcp have some problems:

• There are two tests (server and client) that are interdependent on each other
• They don't test against an independent implementation
• They only run on native
• They take ages to finish

Proposal to makes things better

I propose the following changes to better tests to (a) help with automation (b) make them also run for other boards

• Use something like ethos or slip on boards instead of the radio for now (we can later add some larger scale integration tests for radios)
• Let the test(s) test against netcat via a scripting solution
• Use shorter connection intervals (?)