问题
I am trying to make a gtest project in Visual Studio for my console application in the same solution. When i create this project from the "new project" wizard i can choose the project i want to test. So i select my console application. After visual studio has created the gtest project i can see under references that my console project is present. When i try the sample test case everything works. But when i start to include my classes from the console application i get a linker error which says a symbol on my class is unresolved (LNK_2019). I know this generaly means that the declaration (.h file) of the method is found but the definition (compiled .cpp file) is not found. Normally if i get this error i add the .lib file to the linker settings, but it seems that a console application does not output a lib file. Is there any way to use my classes in my console application in my test project?
回答1:
You should design you application for testing.
Split the application into two projects. The core logic should be implemented in a (static) library. The actual command line application is just a small shell around the logic that has been implemented in the library.
Now you can create the test that links with the library. Please note that this is a general pattern and not limited to the gtest framework.
来源：https://stackoverflow.com/questions/64537645/use-c-classes-from-console-application-class-in-other-project-visual-studio