  An exhaustive number of QCD finite energy sum rules for $\tau$-decay together
with the latest updated ALEPH data is used to test the assumption of global
duality. Typical checks are the absence of the dimension $d=2$ condensate, the
equality of the gluon condensate extracted from vector or axial vector spectral
functions, the Weinberg sum rules, the chiral condensates of dimensions $d=6$
and $d=8$, as well as the extraction of some low-energy parameters of chiral
perturbation theory. Suitable pinched linear integration kernels are introduced
in the sum rules in order to suppress potential quark-hadron duality violations
and experimental errors. We find no compelling indications of duality
violations in hadronic $\tau$-decay in the kinematic region above $s\simeq2.2$
GeV$^{2}$ for these kernels.
