LNK2019: unresolved external symbol in VS unit-testing

Question

I get the error as stated in the title. I ensured the following:
- The Include directory, include library and additional include directory are set correctly
- In the pro

Answer 1

In my experience two things make this error show up, either in the software you are using you didn't properly include it in your project, therefor the link error shows up, or maybe there is a mix between the versions of both your project and the one you try to include. By this i mean, check if they are both 64 or 32. if they are not the same this error will show up. These are the things i know can cause this, it can be something else.