How to implement Cmake and Ctest and just Testing in Visual Studio?

Question

C++ / C#

Guys, hello.
I urgently need to understand how to add tests to the project.
I do everything according to https://cmake.org/Wiki/CMake/Testing_With_CTest
Run_Test in VisualStudio I already have, but in CMakeFile you can already
add_test( testname Exename arg1 arg2 ... )
For example, I have a file Line3D.hpp
Coordinate getMinDistancePoint(const Line3D &line2) const; // function for testing
how will add_test (
testname Exename arg1 arg2 ... ) look like then
2 question sysdev.me/cmake-and-ctest here a man does
the same but writes tests separately
PS. I would love to read about other testing options in VisualStudio 13.
If there are any simple solutions, please tell me.
I used to write only UNIT test for Java.