The exu is a EET file for Exactness (Exactness Unit). It currently
contains the scenario and the images shots.
exactness_inspect supports it, as well as the player (only as output).
This feature is aimed to provide a new way to debug applications during
scenarios playing.
When a difference happens between two shots of an application, the
investigation can be tough as the cause may be hidden into a tiny
change, such as an update of the theme.
This feature tries to respond to this problem by storing objects of
the application every time a shot is taken. Then during shots comparison,
objects information are compared and differences are displayed on the
screen.
The feature can be used with the -S option.
For the moment, only hierarchy, order and geometry are checked.
This reverts commit 7989552b29.
This change introduces segfaults on my machine as well as Jenkins every time a
test fails and a comparison of the images is needed. We might want to bring this
back later but for now a working solution is preferred.