Add DEP 8 tests
Hello,
This MR introduces DEP 8 tests to the tmux package.
There are 2 tests being proposed:
- d/tests/smoketest: Test session creation and removal
- d/tests/utmp: Test creation of utmp entries for new tmux sessions
While the first one just checks if the binary runs creation and removal of new sessions, the second one ensures tmux can create an utmp entry in the system.
Let me know if you have any concerns