The Gaia mission is currently in orbit and succesfully conducting an
astrometric survey that will revolutionize our knowledge of the
structure and dynamics of the Milky Way. In the analysis of the
expected wealth of data, simulations and mock catalogues will play a
key role to help us interpretating the data, understanding the
effect of errors and biases and providing ways to statistically
compare theoretical models and observations through forward
modelling. I will present a suit of methods we have developed at the
IA-UNAM Ensenada to search for tidal streams in the  Galactic Halo,
and which we have adapted to measure and characterize the Galactic
Disk Warp. I will present the results of testing these methods in
mock catalogues that simulate the observational errors and biases
expected in Gaia data.