I’m currently implementing a new feature, but when I try to run the integration tests for the project, the DI container throws an exception.
It thinks the dependency I’m calling from my BackgroundService is declared as a Scoped service, but in reality it’s added as a Singleton.

I have declared my service like this:

services.AddSingleton<IX, X>();

This is the error I’m getting:

System.AggregateException
Some services are not able to be constructed (Error while validating the service descriptor 'ServiceType: Microsoft.Extensions.Hosting.IHostedService Lifetime: Singleton ImplementationType: X.XWorker': Cannot consume scoped service 'X.IX' from singleton 'Microsoft.Extensions.Hosting.IHostedService'.)
   at Microsoft.Extensions.DependencyInjection.ServiceProvider..ctor(ICollection`1 serviceDescriptors, ServiceProviderOptions options)
   at Microsoft.Extensions.DependencyInjection.ServiceCollectionContainerBuilderExtensions.BuildServiceProvider(IServiceCollection services, ServiceProviderOptions options)
   at Microsoft.Extensions.Hosting.HostApplicationBuilder.<>c__DisplayClass12_0.<.ctor>b__0()
   at Microsoft.Extensions.Hosting.HostApplicationBuilder.Build()
   at X.IntegrationTests.WorkerFixture.InitializeAsync() in C:UsersXtestsX.Worker.IntegrationTestsWorkerFixture.cs:line 97
   at Xunit.Sdk.ExceptionAggregator.RunAsync(Func`1 code) in /_/src/xunit.core/Sdk/ExceptionAggregator.cs:line 90

I’ve tried re-declaring the service in a different place and re-declaring the service within the WorkerFixture itself, but no success yet.