  Off-diagonal hypervirial relationships, combined with quantum mechanical sum
rules of charge-current conservation, offer a way for testing electronic
excited-state transition energies and moments, which does not need any external
reference. A number of fundamental relations were recast into absolute
deviations from zero, which have been used to assess the performance of some
popular DFT functionals. Extended TD-DFT calculations have been carried out for
a pool of molecules chosen to the purpose, adopting a large basis set to ensure
high quality results. A general agreement with previous benchmarks is observed.
