How mark a csproj to be ignored on collect code coverage?

Is there a way to mark in csproj to be ignored in the collection?

Maybe with some csproj entry like

     <PropertyGroup>
         <ExcludeFromCodeCoverage>true</ExcludeFromCodeCoverage>
     </PropertyGroup>

[tonyhallett]

Yes.

The correct method is to apply the ExcludeFromCodeCoverage attribute to the assembly, although unfortunately this will not work for .NET Framework as the AttributeUsage does not include Assembly.

The documentation isn’t clear that this is possible for all 3 drivers, it only mentions it for the global tool and MSBuild integration

https://github.com/coverlet-coverage/coverlet/blob/master/Documentation/GlobalTool.md#excluding-from-coverage https://github.com/coverlet-coverage/coverlet/blob/master/Documentation/MSBuildIntegration.md#excluding-from-coverage

You can ignore a method an entire class or assembly from code coverage by creating and applying the ExcludeFromCodeCoverage attribute present in the System.Diagnostics.CodeAnalysis namespace.

<AssemblyAttribute Include="System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage"></AssemblyAttribute>

If you are interested all 3 drivers quickly call into https://github.com/coverlet-coverage/coverlet/blob/b63ab2adf7970fe074232622cb58ae1928aa7717/src/coverlet.core/Coverage.cs#L104 here you can see the exclude and include filters being used to determine if the module should be instrumented.

Although the code that checks for the ExcludeFromCodeCoverage attribute on the assembly is in the Instrumenter https://github.com/coverlet-coverage/coverlet/blob/b63ab2adf7970fe074232622cb58ae1928aa7717/src/coverlet.core/Instrumentation/Instrumenter.cs#L233

I think that the exclusion code for the assembly attribute should change to be a name match rather than a full name match as per type and method matching - https://github.com/coverlet-coverage/coverlet/blob/5cb26b13e9133c785488234b19f59fc68d8a1eef/src/coverlet.core/Instrumentation/Instrumenter.cs#L76

This way a .Net Framework project can opt out of code coverage in the same manner. @MarcoRossignoli what do you think ? The assembly attribute commit https://github.com/coverlet-coverage/coverlet/commit/83c47b8dd4abd820f573aa4b4feff36c638eedcc

[MarcoRossignoli]

I’m going to close this as solved.

Feel free to reopen if needed.