Option 1: Using coverlet.msbuild

Before running, uncomment the coverlet.msbuild package reference in Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj:

<PackageReference Include="coverlet.msbuild" Version="6.0.4" />

Run the following commands:

# Clean the project
dotnet clean Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configuration Debug

# Restore packages
dotnet restore Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configfile NuGet.config --verbosity Minimal /p:Configuration=Debug /p:UsePackageReference=true /p:UseExternalPackageReference=true

# Build the project
dotnet build Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configuration Debug --no-restore /p:UsePackageReference=true /p:UseExternalPackageReference=true

# Run tests with code coverage
dotnet test Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --logger trx --configuration Debug --no-restore /p:UsePackageReference=true /p:UseExternalPackageReference=true --settings coverlet.runsettings /p:CollectCoverage=true /p:CoverletOutputFormat=cobertura

Option 2: Using coverlet.collector

Before running, uncomment the coverlet.collector package reference in Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj:

<PackageReference Include="coverlet.collector" Version="6.0.4" />

coverlet.runsettings:

<DataCollectionRunSettings>
...
</DataCollectionRunSettings>

Run the following commands:

# Clean the project
dotnet clean Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configuration Debug

# Restore packages
dotnet restore Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configfile NuGet.config --verbosity Minimal /p:Configuration=Debug /p:UsePackageReference=true /p:UseExternalPackageReference=true

# Build the project
dotnet build Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configuration Debug --no-restore /p:UsePackageReference=true /p:UseExternalPackageReference=true

# Run tests with code coverage
dotnet test Demo.Api.IntegrationTests/Demo.Api.IntegrationTests.csproj --configuration Debug --no-restore /p:UsePackageReference=true /p:UseExternalPackageReference=true --settings coverlet.runsettings --collect:"XPlat Code Coverage"

Note: Test Concurrency and Code Coverage

DemoApiIntegrationTestsStartup.cs:

[assembly: CollectionBehavior(MaxParallelThreads = 1)]

This forces tests to run sequentially, which "resolves" code coverage accuracy issues.