Refactor code structure and optimize performance across multiple modules

src/__Libraries/__Tests/StellaOps.Router.Common.Tests/RoutingDeterminismTests.cs

@@ -2,6 +2,7 @@ using StellaOps.Router.Common.Abstractions;
 using StellaOps.Router.Common.Enums;
 using StellaOps.Router.Common.Models;
 
+using StellaOps.TestKit;
 namespace StellaOps.Router.Common.Tests;
 
 /// <summary>
@@ -11,7 +12,8 @@ public sealed class RoutingDeterminismTests
 {
     #region Core Determinism Property Tests
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void SameContextAndConnections_AlwaysSelectsSameRoute()
     {
         // Arrange
@@ -32,7 +34,8 @@ public sealed class RoutingDeterminismTests
         results.Should().AllBeEquivalentTo(results[0]);
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void DifferentConnectionOrder_ProducesSameResult()
     {
         // Arrange
@@ -57,7 +60,8 @@ public sealed class RoutingDeterminismTests
         result1.ConnectionId.Should().Be(result2.ConnectionId);
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void SamePathAndMethod_WithSameHeaders_ProducesSameRouteKey()
     {
         // Arrange
@@ -97,7 +101,8 @@ public sealed class RoutingDeterminismTests
 
     #region Region Affinity Determinism Tests
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void SameRegion_AlwaysPreferredWhenAvailable()
     {
         // Arrange
@@ -117,7 +122,8 @@ public sealed class RoutingDeterminismTests
         results.Should().AllSatisfy(r => r.Instance.Region.Should().Be("us-east"));
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void NoLocalRegion_FallbackIsDeterministic()
     {
         // Arrange
@@ -142,7 +148,8 @@ public sealed class RoutingDeterminismTests
 
     #region Version Selection Determinism Tests
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void SameRequestedVersion_AlwaysSelectsMatchingConnection()
     {
         // Arrange
@@ -163,7 +170,8 @@ public sealed class RoutingDeterminismTests
         results.Should().AllSatisfy(r => r.Instance.Version.Should().Be("2.0.0"));
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void NoVersionRequested_LatestStableIsSelectedDeterministically()
     {
         // Arrange
@@ -188,7 +196,8 @@ public sealed class RoutingDeterminismTests
 
     #region Health Status Determinism Tests
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void HealthyConnectionsPreferred_Deterministically()
     {
         // Arrange
@@ -209,7 +218,8 @@ public sealed class RoutingDeterminismTests
         results.Should().AllSatisfy(r => r.ConnectionId.Should().Be("conn-healthy"));
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void DegradedConnectionSelected_WhenNoHealthyAvailable()
     {
         // Arrange
@@ -231,7 +241,8 @@ public sealed class RoutingDeterminismTests
         results[0].Status.Should().Be(InstanceHealthStatus.Degraded);
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void DrainingConnectionsExcluded()
     {
         // Arrange
@@ -253,7 +264,8 @@ public sealed class RoutingDeterminismTests
 
     #region Multi-Criteria Determinism Tests
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void RegionThenVersionThenHealth_OrderingIsDeterministic()
     {
         // Arrange
@@ -288,7 +300,8 @@ public sealed class RoutingDeterminismTests
         });
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void TieBreaker_UsesConnectionIdForConsistency()
     {
         // Arrange - Two identical connections except ID
@@ -312,7 +325,8 @@ public sealed class RoutingDeterminismTests
 
     #region Endpoint Matching Determinism Tests
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void PathParameterMatching_IsDeterministic()
     {
         // Arrange
@@ -335,7 +349,8 @@ public sealed class RoutingDeterminismTests
         }
     }
 
-    [Fact]
+    [Trait("Category", TestCategories.Unit)]
+        [Fact]
     public void MultipleEndpoints_SamePath_SelectsFirstMatchDeterministically()
     {
         // Arrange