Provide IntelliSense in test files

[SSoelvsten]

Currently all test files have red scripples all over them in Visual Studio Code. It would be better, if we somehow can get it to work properly. Adding #include <adiar/adiar.h> at the top of each test file does not seem to work. One probably needs to mess with CMake.

[SSoelvsten]

A lot of IntelliSense is missing for Visual Studio Code on Windows if you use the C++ compiler of Windows Subsystem for Linux (WSL) as I and Anna have done. The solution is to open the project in VSCode with WSL (https://code.visualstudio.com/docs/cpp/config-wsl). For example, one can do so as follows.

code .

Just ensure, the addons also are installed for the WSL version.

Yewt, this only adds IntellliSense to the src/ folder, but not the test/ folder. The problem here is, that the build dependencies of each .cpp is unknown to CMake and it does not include any of the common definitions.

• [ ] Move all adiar wrapper classes and the main function into a test.h file.
• [ ] Make each test_*.cpp file into its own build target with dependencies and import test.h.
• [ ] Rename test.cpp to test_all.cpp

This has the added benefit, that one can faster compile and run a subset of the unit tests.