Signal: some extra light tests for trivial cases
Signal: some extra light tests for trivial cases

Change-Id: I8235b99bdbcb1d6f52a6a2e9897b4d759f60411d
Reviewed-on: http://gerrit.aldebaran.lan/74219
Reviewed-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran.com>
Tested-by: vpaleologue <cb19838a79eb484e12a6960acfbf7c16dfdb80d9@aldebaran-robotics.com>

aldebaran/libqi,aldebaran/libqi,aldebaran/libqi