catch software package provides C++ Automated Test Cases in Headers, 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 catch
catch is installed in your system.
Make ensure the catch package were installed using the commands given below,
$ sudo dpkg-query -l | grep catch *
You will get with catch package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | catch |
| Version | 1.2.0-1 |
| Description | C++ Automated Test Cases in Headers |
| Sub Section | devel |