This patch makes Koha::Logger use 'warn' instead of just printing to STDERR. It introduces tests for this warnings too. Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>
Test plan: Run the test. Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com> Signed-off-by: Tomas Cohen Arazi <tomascohen@unc.edu.ar>