Conan.io example for gtest project.
The project is using OpenSSL to build an encryption library, and using Google test to ensure that the library is built correctly. The Google test library is required in the test_package/conanfile.py.
A different approach would be running the test at the end of the build() method in the root conanfile.py and require gtest library as a build_require, so it would be only downloaded when the encryption library has to be built from sources.
With that approach, the test_package project could just run an example using/linking with the encryption library.
Download conan client from Conan.io and run:
$ conan create user/channel
The above command will export, build and test a conan package for a custom encryption library.