$ sudo apt-get update
$ sudo apt-get install libxorg-gtest-data 

libxorg-gtest-data is installed in your system.

Make ensure the libxorg-gtest-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep libxorg-gtest-data *

You will get with libxorg-gtest-data package name, version, architecture and description in a table

libxorg-gtest-data package basic information: