About Unit Test

[maonaoda]

I have a service (ServiceA), which has implementations on Android (Platforms/Android) and iOS (Platforms/iOS).
Now I need to unit test the project (ProjectA).
I ​​imagine that I need to set the TargetFramework of the test project (ProjectA.Test) to net8.0.
At this time, I need to compile the net8.0 version of ProjectA,
but because it depends on the implementation of the method of ServiceA,
the net8.0 version of ProjectA cannot be compiled.

Should i need add this implementation in Platforms/XXX
But after I do this, the implemented service in Platforms/XXX will not be compiled。

[maonaoda]

Switching TargetFramework with vscode is so painful, I'm not sure if what I said is correct now

[maonaoda]

When I compile manually the files in Platforms/Core/
Repeated compilation error will occur, but if not compile manually, the file will not compile。
<!-- <Compile Include="**\Core\**\*.cs" /> -->

/usr/local/share/dotnet/sdk/9.0.100-rc.1.24452.12/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.DefaultItems.Shared.targets(190,5): error NETSDK1022: Duplicate 'Compile' items were included. The .NET SDK includes 'Compile' items from your project directory by default. You can either remove these items from your project file, or set the 'EnableDefaultCompileItems' property to 'false' if you want to explicitly include them in your project file. For more information, see https://aka.ms/sdkimplicititems. The duplicate items were: 'Platforms/Core/Utils/CalculateTextSize.cs'; 'Platforms/Core/Utils/DeviceSizeUtil.cs'; 'Platforms/Core/Utils/KeyboardHelper.cs'