Testing a .NET 7 WASM application

[PMJMendes]

I'm having trouble unit testing a Blazor WASM application. Basically, as soon as I add a project reference to the test project, I'm getting the following error:

Conflicting assets with the same target path '_framework/blazor.boot.json'. For 'Build' assets

Identity: C:\Local\LocalDev\Premium\Jiffy\jiffy-template-blazor\Jiffy.NET Blazor UI\bin\Debug\net7.0\wwwroot\_framework\blazor.boot.json, SourceType: Project, SourceId: Jiffy.NET Blazor UI, ContentRoot: C:\Local\LocalDev\Premium\Jiffy\jiffy-template-blazor\Jiffy.NET Blazor UI\bin\Debug\net7.0\wwwroot\, BasePath: /, RelativePath: _framework/blazor.boot.json, AssetKind: Build, AssetMode: All, AssetRole: Primary, RelatedAsset: , AssetTraitName: BlazorWebAssemblyResource, AssetTraitValue: manifest, CopyToOutputDirectory: PreserveNewest, CopyToPublishDirectory: Never, OriginalItemSpec: obj\Debug\net7.0\blazor.boot.json

and

Identity: C:\Local\LocalDev\Premium\Jiffy\jiffy-template-blazor\Jiffy.NET Blazor UI\bin\Debug\net7.0\wwwroot\_framework\blazor.boot.json, SourceType: Project, SourceId: Jiffy.NET Blazor UI, ContentRoot: C:\Local\LocalDev\Premium\Jiffy\jiffy-template-blazor\Jiffy.NET Blazor UI\bin\Debug\net7.0\wwwroot\, BasePath: /, RelativePath: _framework/blazor.boot.json, AssetKind: Build, AssetMode: All, AssetRole: Primary, RelatedAsset: , AssetTraitName: BlazorWebAssemblyResource, AssetTraitValue: manifest, CopyToOutputDirectory: PreserveNewest, CopyToPublishDirectory: Never, OriginalItemSpec: obj\Debug\net7.0\blazor.boot.json

As you can see, the "two" assets are exactly the same asset.

I'm kind of at a loss.

My WASM app targets .NET 7, so the test project has to target .NET 7 as well. Is this perhaps the problem? I know the Getting Started docs want the project to target .NET 6, but that's not really an option for me.

I'm using Visual Studio 17.5.2, in case that's relevant.

Thanks in advance.

[linkdotnet]

Hey @PMJMendes ,

bUnit targets multiple frameworks like net6.0 and net7.0 so you can and should target the version your production code is running. So in your case both projects should target net7.0.

To help you further: Can you provide both csproj files? Also if you call dotnet test or dotnet build in your root directory, does it compile cleanly?

[linkdotnet]

That is very odd, as I tried that a few seconds ago.

What SDK version are you using? aka dotnet --info?

[PMJMendes]

7.0.202, the one that corresponds to the 7.0.4 runtime.

[linkdotnet]

That is really odd. I do have the same version (MacOS ARM though, maybe that makes a difference).

[PMJMendes]

I think maybe this is more an issue for the .Net team than BUnit. :) Thanks for your help!

[linkdotnet]

Yeah I do think they are the right people to address this issue.