refactor: Redesign limit factory to make code more testable

The quality size factory now implements an interface so that tests can
mock it.

src/Recyclarr.Cli/Pipelines/QualitySize/PipelinePhases/Limits/IQualityItemLimitFactory.cs

@@ -0,0 +1,9 @@
+using Recyclarr.TrashGuide;
+using Recyclarr.TrashGuide.QualitySize;
+
+namespace Recyclarr.Cli.Pipelines.QualitySize.PipelinePhases.Limits;
+
+public interface IQualityItemLimitFactory
+{
+    Task<QualityItemLimits> Create(SupportedServices serviceType, CancellationToken ct);
+}

src/Recyclarr.Cli/Pipelines/QualitySize/PipelinePhases/Limits/QualityItemLimitFactory.cs

@@ -5,6 +5,7 @@ using Recyclarr.TrashGuide.QualitySize;
 namespace Recyclarr.Cli.Pipelines.QualitySize.PipelinePhases.Limits;
 
 public class QualityItemLimitFactory(IIndex<SupportedServices, IQualityItemLimitFetcher> limitFactory)
+    : IQualityItemLimitFactory
 {
     public async Task<QualityItemLimits> Create(SupportedServices serviceType, CancellationToken ct)
     {

src/Recyclarr.Cli/Pipelines/QualitySize/PipelinePhases/QualitySizeConfigPhase.cs

@@ -11,7 +11,7 @@ public class QualitySizeConfigPhase(
     ILogger log,
     IQualitySizeGuideService guide,
     IServiceConfiguration config,
-    QualityItemLimitFactory limitFactory)
+    IQualityItemLimitFactory limitFactory)
     : IConfigPipelinePhase<QualitySizePipelineContext>
 {
     public async Task Execute(QualitySizePipelineContext context, CancellationToken ct)

src/Recyclarr.Cli/Pipelines/QualitySize/QualitySizeAutofacModule.cs

@@ -14,7 +14,7 @@ public class QualitySizeAutofacModule : Module
         builder.RegisterType<QualitySizeDataLister>();
 
         // Setup factory for creation of concrete IQualityItemLimits types
-        builder.RegisterType<QualityItemLimitFactory>();
+        builder.RegisterType<QualityItemLimitFactory>().As<IQualityItemLimitFactory>();
         builder.RegisterType<RadarrQualityItemLimitFetcher>()
             .Keyed<IQualityItemLimitFetcher>(SupportedServices.Radarr)
             .InstancePerLifetimeScope();

tests/Recyclarr.Cli.TestLibrary/Recyclarr.Cli.TestLibrary.csproj

@@ -1,5 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <ItemGroup>
     <ProjectReference Include="..\..\src\Recyclarr.Cli\Recyclarr.Cli.csproj" />
+    <ProjectReference Include="..\Recyclarr.Tests.TestLibrary\Recyclarr.Tests.TestLibrary.csproj" />
   </ItemGroup>
 </Project>

tests/Recyclarr.Cli.TestLibrary/TestQualityItemLimitFactory.cs

@@ -0,0 +1,16 @@
+using Recyclarr.Cli.Pipelines.QualitySize.PipelinePhases.Limits;
+using Recyclarr.Tests.TestLibrary;
+using Recyclarr.TrashGuide;
+using Recyclarr.TrashGuide.QualitySize;
+
+namespace Recyclarr.Cli.TestLibrary;
+
+public class TestQualityItemLimitFactory : IQualityItemLimitFactory
+{
+    public Task<QualityItemLimits> Create(SupportedServices serviceType, CancellationToken ct)
+    {
+        return Task.FromResult(new QualityItemLimits(
+            TestQualityItemLimits.MaxUnlimitedThreshold,
+            TestQualityItemLimits.PreferredUnlimitedThreshold));
+    }
+}

tests/Recyclarr.Cli.Tests/Pipelines/QualitySize/PipelinePhases/QualitySizeConfigPhaseTest.cs

@@ -1,6 +1,7 @@
 using NSubstitute.ReturnsExtensions;
 using Recyclarr.Cli.Pipelines.QualitySize;
 using Recyclarr.Cli.Pipelines.QualitySize.PipelinePhases;
+using Recyclarr.Cli.TestLibrary;
 using Recyclarr.Config.Models;
 using Recyclarr.TrashGuide.QualitySize;
 
@@ -73,6 +74,7 @@ public class QualitySizeConfigPhaseTest
     public async Task Preferred_is_set_via_ratio(
         [Frozen] IQualitySizeGuideService guide,
         [Frozen] IServiceConfiguration config,
+        [Frozen(Matching.ImplementedInterfaces)] TestQualityItemLimitFactory limitFactory,
         QualitySizeConfigPhase sut)
     {
         config.QualityDefinition.Returns(new QualityDefinitionConfig
@@ -107,6 +109,7 @@ public class QualitySizeConfigPhaseTest
     public async Task Preferred_is_set_via_guide(
         [Frozen] IQualitySizeGuideService guide,
         [Frozen] IServiceConfiguration config,
+        [Frozen(Matching.ImplementedInterfaces)] TestQualityItemLimitFactory limitFactory,
         QualitySizeConfigPhase sut)
     {
         config.QualityDefinition.Returns(new QualityDefinitionConfig