btest software package provides simple driver for basic unit tests, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install btest
btest is installed in your system.
Make ensure the btest package were installed using the commands given below,
$ sudo dpkg-query -l | grep btest *
You will get with btest package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | btest |
| Version | 0.54-1 |
| Description | simple driver for basic unit tests |
| Sub Section | devel |