Add information about how to write plugin tests and how to integrate
unit tests.
Change-Id: I13721f03c4c55a265a93f71a7c4d892f3e53a6bb
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
After the switch to CMake.
Extends 29f3be1a6e
Change-Id: I626bc7393d290710d7e5d1f2907e6fa1f25a7d21
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>