Update analyzers for .NET 10 SDK (#2611)

dotnet/tests/.editorconfig

@@ -1,6 +1,10 @@
 # Suppressing errors for Test projects under dotnet/tests folder
 [*.cs]
+dotnet_diagnostic.CA1822.severity = none # Member does not access instance data and can be marked as static
+dotnet_diagnostic.CA1873.severity = none # Evaluation of logging arguments may be expensive
+dotnet_diagnostic.CA1875.severity = none # Regex.IsMatch/Count instead of Regex.Match(...).Success/Regex.Matches(...).Count
 dotnet_diagnostic.CA2007.severity = none # Do not directly await a Task
+dotnet_diagnostic.CA2249.severity = none # Use `string.Contains` instead of `string.IndexOf` to improve readability
 
 dotnet_diagnostic.CS1591.severity = none # Missing XML comment for publicly visible type or member
 

dotnet/tests/Microsoft.Agents.AI.A2A.UnitTests/A2AAgentTests.cs

@@ -547,7 +547,7 @@ public sealed class A2AAgentTests : IDisposable
         var result = await this._agent.RunAsync("Test message");
 
         // Assert
-        if (taskState == TaskState.Submitted || taskState == TaskState.Working)
+        if (taskState is TaskState.Submitted or TaskState.Working)
         {
             Assert.NotNull(result.ContinuationToken);
         }

dotnet/tests/Microsoft.Agents.AI.A2A.UnitTests/Extensions/A2AArtifactExtensionsTests.cs

@@ -64,12 +64,12 @@ public sealed class A2AArtifactExtensionsTests
         {
             ArtifactId = "artifact-ai-multi",
             Name = "test",
-            Parts = new List<Part>
-            {
+            Parts =
+            [
                 new TextPart { Text = "Part 1" },
                 new TextPart { Text = "Part 2" },
                 new TextPart { Text = "Part 3" }
-            },
+            ],
             Metadata = null
         };
 
@@ -93,7 +93,7 @@ public sealed class A2AArtifactExtensionsTests
         {
             ArtifactId = "artifact-empty",
             Name = "test",
-            Parts = new List<Part>(),
+            Parts = [],
             Metadata = null
         };
 

dotnet/tests/Microsoft.Agents.AI.AGUI.UnitTests/AGUIChatClientTests.cs

@@ -919,7 +919,7 @@ public sealed class AGUIAgentTests
         List<ChatMessage> messages = [new ChatMessage(ChatRole.User, "Test")];
 
         // Act - First turn
-        List<ChatMessage> conversation = new(messages);
+        List<ChatMessage> conversation = [.. messages];
         string? conversationId = null;
         await foreach (var update in chatClient.GetStreamingResponseAsync(conversation, options))
         {

dotnet/tests/Microsoft.Agents.AI.AzureAI.UnitTests/AzureAIProjectChatClientExtensionsTests.cs

@@ -2684,13 +2684,12 @@ public sealed class AzureAIProjectChatClientExtensionsTests
     private sealed class MockPipelineResponse : PipelineResponse
     {
         private readonly int _status;
-        private readonly BinaryData _content;
         private readonly MockPipelineResponseHeaders _headers;
 
         public MockPipelineResponse(int status, BinaryData? content = null)
         {
             this._status = status;
-            this._content = content ?? BinaryData.Empty;
+            this.Content = content ?? BinaryData.Empty;
             this._headers = new MockPipelineResponseHeaders();
         }
 
@@ -2704,7 +2703,7 @@ public sealed class AzureAIProjectChatClientExtensionsTests
             set { }
         }
 
-        public override BinaryData Content => this._content;
+        public override BinaryData Content { get; }
 
         protected override PipelineResponseHeaders HeadersCore => this._headers;
 

dotnet/tests/Microsoft.Agents.AI.CosmosNoSql.UnitTests/CosmosChatMessageStoreTests.cs

@@ -8,7 +8,6 @@ using System.Text.Json.Serialization.Metadata;
 using System.Threading.Tasks;
 using Azure.Core;
 using Azure.Identity;
-using Microsoft.Agents.AI;
 using Microsoft.Azure.Cosmos;
 using Microsoft.Extensions.AI;
 using Xunit;
@@ -81,7 +80,7 @@ public sealed class CosmosChatMessageStoreTests : IAsyncLifetime, IDisposable
                 throughput: 400);
 
             // Create container for hierarchical partitioning tests with hierarchical partition key
-            var hierarchicalContainerProperties = new ContainerProperties(HierarchicalTestContainerId, new List<string> { "/tenantId", "/userId", "/sessionId" });
+            var hierarchicalContainerProperties = new ContainerProperties(HierarchicalTestContainerId, ["/tenantId", "/userId", "/sessionId"]);
             await databaseResponse.Database.CreateContainerIfNotExistsAsync(
                 hierarchicalContainerProperties,
                 throughput: 400);
@@ -247,7 +246,7 @@ public sealed class CosmosChatMessageStoreTests : IAsyncLifetime, IDisposable
                     PartitionKey = new PartitionKey(conversationId)
                 });
 
-            List<dynamic> rawResults = new();
+            List<dynamic> rawResults = [];
             while (rawIterator.HasMoreResults)
             {
                 var rawResponse = await rawIterator.ReadNextAsync();

dotnet/tests/Microsoft.Agents.AI.CosmosNoSql.UnitTests/CosmosCheckpointStoreTests.cs

@@ -77,7 +77,7 @@ public class CosmosCheckpointStoreTests : IAsyncLifetime, IDisposable
 
             this._emulatorAvailable = true;
         }
-        catch (Exception ex) when (!(ex is OutOfMemoryException || ex is StackOverflowException || ex is AccessViolationException))
+        catch (Exception ex) when (ex is not (OutOfMemoryException or StackOverflowException or AccessViolationException))
         {
             // Emulator not available, tests will be skipped
             this._emulatorAvailable = false;

dotnet/tests/Microsoft.Agents.AI.Hosting.AGUI.AspNetCore.UnitTests/AGUIServerSentEventsResultTests.cs

@@ -100,9 +100,6 @@ public sealed class AGUIServerSentEventsResultTests
 
         // Act
         await result.ExecuteAsync(httpContext);
-
-        // Assert
-        Assert.Equal(StatusCodes.Status200OK, result.StatusCode);
     }
 
     [Fact]

dotnet/tests/Microsoft.Agents.AI.Mem0.IntegrationTests/Mem0ProviderTests.cs

@@ -49,14 +49,14 @@ public sealed class Mem0ProviderTests : IDisposable
         var sut = new Mem0Provider(this._httpClient, storageScope);
 
         await sut.ClearStoredMemoriesAsync();
-        var ctxBefore = await sut.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }));
+        var ctxBefore = await sut.InvokingAsync(new AIContextProvider.InvokingContext([question]));
         Assert.DoesNotContain("Caoimhe", ctxBefore.Messages?[0].Text ?? string.Empty);
 
         // Act
-        await sut.InvokedAsync(new AIContextProvider.InvokedContext(new[] { input }, aiContextProviderMessages: null));
+        await sut.InvokedAsync(new AIContextProvider.InvokedContext([input], aiContextProviderMessages: null));
         var ctxAfterAdding = await GetContextWithRetryAsync(sut, question);
         await sut.ClearStoredMemoriesAsync();
-        var ctxAfterClearing = await sut.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }));
+        var ctxAfterClearing = await sut.InvokingAsync(new AIContextProvider.InvokingContext([question]));
 
         // Assert
         Assert.Contains("Caoimhe", ctxAfterAdding.Messages?[0].Text ?? string.Empty);
@@ -73,14 +73,14 @@ public sealed class Mem0ProviderTests : IDisposable
         var sut = new Mem0Provider(this._httpClient, storageScope);
 
         await sut.ClearStoredMemoriesAsync();
-        var ctxBefore = await sut.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }));
+        var ctxBefore = await sut.InvokingAsync(new AIContextProvider.InvokingContext([question]));
         Assert.DoesNotContain("Caoimhe", ctxBefore.Messages?[0].Text ?? string.Empty);
 
         // Act
-        await sut.InvokedAsync(new AIContextProvider.InvokedContext(new[] { assistantIntro }, aiContextProviderMessages: null));
+        await sut.InvokedAsync(new AIContextProvider.InvokedContext([assistantIntro], aiContextProviderMessages: null));
         var ctxAfterAdding = await GetContextWithRetryAsync(sut, question);
         await sut.ClearStoredMemoriesAsync();
-        var ctxAfterClearing = await sut.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }));
+        var ctxAfterClearing = await sut.InvokingAsync(new AIContextProvider.InvokingContext([question]));
 
         // Assert
         Assert.Contains("Caoimhe", ctxAfterAdding.Messages?[0].Text ?? string.Empty);
@@ -99,13 +99,13 @@ public sealed class Mem0ProviderTests : IDisposable
         await sut1.ClearStoredMemoriesAsync();
         await sut2.ClearStoredMemoriesAsync();
 
-        var ctxBefore1 = await sut1.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }));
-        var ctxBefore2 = await sut2.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }));
+        var ctxBefore1 = await sut1.InvokingAsync(new AIContextProvider.InvokingContext([question]));
+        var ctxBefore2 = await sut2.InvokingAsync(new AIContextProvider.InvokingContext([question]));
         Assert.DoesNotContain("Caoimhe", ctxBefore1.Messages?[0].Text ?? string.Empty);
         Assert.DoesNotContain("Caoimhe", ctxBefore2.Messages?[0].Text ?? string.Empty);
 
         // Act
-        await sut1.InvokedAsync(new AIContextProvider.InvokedContext(new[] { assistantIntro }, aiContextProviderMessages: null));
+        await sut1.InvokedAsync(new AIContextProvider.InvokedContext([assistantIntro], aiContextProviderMessages: null));
         var ctxAfterAdding1 = await GetContextWithRetryAsync(sut1, question);
         var ctxAfterAdding2 = await GetContextWithRetryAsync(sut2, question);
 
@@ -123,7 +123,7 @@ public sealed class Mem0ProviderTests : IDisposable
         AIContext? ctx = null;
         for (int i = 0; i < attempts; i++)
         {
-            ctx = await provider.InvokingAsync(new AIContextProvider.InvokingContext(new[] { question }), CancellationToken.None);
+            ctx = await provider.InvokingAsync(new AIContextProvider.InvokingContext([question]), CancellationToken.None);
             var text = ctx.Messages?[0].Text;
             if (!string.IsNullOrEmpty(text) && text.IndexOf("Caoimhe", StringComparison.OrdinalIgnoreCase) >= 0)
             {

dotnet/tests/Microsoft.Agents.AI.Mem0.UnitTests/Mem0ProviderTests.cs

@@ -35,6 +35,10 @@ public sealed class Mem0ProviderTests : IDisposable
             .Setup(f => f.CreateLogger(typeof(Mem0Provider).FullName!))
             .Returns(this._loggerMock.Object);
 
+        this._loggerMock
+            .Setup(f => f.IsEnabled(It.IsAny<LogLevel>()))
+            .Returns(true);
+
         this._httpClient = new HttpClient(this._handler)
         {
             BaseAddress = new Uri("https://localhost/")
@@ -131,10 +135,10 @@ public sealed class Mem0ProviderTests : IDisposable
     }
 
     [Theory]
-    [InlineData(false, false, 2)]
-    [InlineData(true, false, 2)]
-    [InlineData(false, true, 1)]
-    [InlineData(true, true, 1)]
+    [InlineData(false, false, 4)]
+    [InlineData(true, false, 4)]
+    [InlineData(false, true, 2)]
+    [InlineData(true, true, 2)]
     public async Task InvokingAsync_LogsUserIdBasedOnEnableSensitiveTelemetryDataAsync(bool enableSensitiveTelemetryData, bool requestThrows, int expectedLogInvocations)
     {
         // Arrange
@@ -157,7 +161,7 @@ public sealed class Mem0ProviderTests : IDisposable
         var options = new Mem0ProviderOptions { EnableSensitiveTelemetryData = enableSensitiveTelemetryData };
 
         var sut = new Mem0Provider(this._httpClient, storageScope, options: options, loggerFactory: this._loggerFactoryMock.Object);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Who am I?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Who am I?")]);
 
         // Act
         await sut.InvokingAsync(invokingContext, CancellationToken.None);
@@ -166,7 +170,12 @@ public sealed class Mem0ProviderTests : IDisposable
         Assert.Equal(expectedLogInvocations, this._loggerMock.Invocations.Count);
         foreach (var logInvocation in this._loggerMock.Invocations)
         {
-            var state = Assert.IsAssignableFrom<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2]);
+            if (logInvocation.Method.Name == nameof(ILogger.IsEnabled))
+            {
+                continue;
+            }
+
+            var state = Assert.IsType<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2], exactMatch: false);
             var userIdValue = state.First(kvp => kvp.Key == "UserId").Value;
             Assert.Equal(enableSensitiveTelemetryData ? "user" : "<redacted>", userIdValue);
 
@@ -275,8 +284,8 @@ public sealed class Mem0ProviderTests : IDisposable
     [Theory]
     [InlineData(false, false, 0)]
     [InlineData(true, false, 0)]
-    [InlineData(false, true, 1)]
-    [InlineData(true, true, 1)]
+    [InlineData(false, true, 2)]
+    [InlineData(true, true, 2)]
     public async Task InvokedAsync_LogsUserIdBasedOnEnableSensitiveTelemetryDataAsync(bool enableSensitiveTelemetryData, bool requestThrows, int expectedLogCount)
     {
         // Arrange
@@ -315,7 +324,12 @@ public sealed class Mem0ProviderTests : IDisposable
         Assert.Equal(expectedLogCount, this._loggerMock.Invocations.Count);
         foreach (var logInvocation in this._loggerMock.Invocations)
         {
-            var state = Assert.IsAssignableFrom<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2]);
+            if (logInvocation.Method.Name == nameof(ILogger.IsEnabled))
+            {
+                continue;
+            }
+
+            var state = Assert.IsType<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2], exactMatch: false);
             var userIdValue = state.First(kvp => kvp.Key == "UserId").Value;
             Assert.Equal(enableSensitiveTelemetryData ? "user" : "<redacted>", userIdValue);
         }
@@ -386,7 +400,7 @@ public sealed class Mem0ProviderTests : IDisposable
         // Arrange
         var storageScope = new Mem0ProviderScope { ApplicationId = "app" };
         var provider = new Mem0Provider(this._httpClient, storageScope, loggerFactory: this._loggerFactoryMock.Object);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Q?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Q?")]);
 
         // Act
         var aiContext = await provider.InvokingAsync(invokingContext, CancellationToken.None);

dotnet/tests/Microsoft.Agents.AI.Purview.UnitTests/PurviewClientTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Microsoft. All rights reserved.
 
 using System;
-using System.Collections.Generic;
 using System.Net;
 using System.Net.Http;
 using System.Text;
@@ -50,10 +49,10 @@ public sealed class PurviewClientTests : IDisposable
         {
             Id = "test-id-123",
             ProtectionScopeState = ProtectionScopeState.NotModified,
-            PolicyActions = new List<DlpActionInfo>
-            {
+            PolicyActions =
+            [
                 new() { Action = DlpAction.NotifyUser }
-            }
+            ]
         };
 
         this._handler.StatusCodeToReturn = HttpStatusCode.OK;
@@ -228,8 +227,8 @@ public sealed class PurviewClientTests : IDisposable
 
         var expectedResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -238,7 +237,7 @@ public sealed class PurviewClientTests : IDisposable
                         new ("microsoft.graph.policyLocationApplication", "app-123")
                     ]
                 }
-            }
+            ]
         };
 
         this._handler.StatusCodeToReturn = HttpStatusCode.OK;
@@ -264,7 +263,7 @@ public sealed class PurviewClientTests : IDisposable
     {
         // Arrange
         var request = new ProtectionScopesRequest("test-user-id", "test-tenant-id");
-        var expectedResponse = new ProtectionScopesResponse { Scopes = new List<PolicyScopeBase>() };
+        var expectedResponse = new ProtectionScopesResponse { Scopes = [] };
 
         this._handler.StatusCodeToReturn = HttpStatusCode.OK;
         this._handler.ResponseToReturn = JsonSerializer.Serialize(expectedResponse, PurviewSerializationUtils.SerializationSettings.GetTypeInfo(typeof(ProtectionScopesResponse)));

dotnet/tests/Microsoft.Agents.AI.Purview.UnitTests/ScopedContentProcessorTests.cs

@@ -56,8 +56,8 @@ public sealed class ScopedContentProcessorTests
 
         var psResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -67,7 +67,7 @@ public sealed class ScopedContentProcessorTests
                     ],
                     ExecutionMode = ExecutionMode.EvaluateInline
                 }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
@@ -76,10 +76,10 @@ public sealed class ScopedContentProcessorTests
 
         var pcResponse = new ProcessContentResponse
         {
-            PolicyActions = new List<DlpActionInfo>
-            {
+            PolicyActions =
+            [
                 new() { Action = DlpAction.BlockAccess }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.ProcessContentAsync(
@@ -115,8 +115,8 @@ public sealed class ScopedContentProcessorTests
 
         var psResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -126,7 +126,7 @@ public sealed class ScopedContentProcessorTests
                     ],
                     ExecutionMode = ExecutionMode.EvaluateInline
                 }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
@@ -135,10 +135,10 @@ public sealed class ScopedContentProcessorTests
 
         var pcResponse = new ProcessContentResponse
         {
-            PolicyActions = new List<DlpActionInfo>
-            {
+            PolicyActions =
+            [
                 new() { RestrictionAction = RestrictionAction.Block }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.ProcessContentAsync(
@@ -174,8 +174,8 @@ public sealed class ScopedContentProcessorTests
 
         var psResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -185,7 +185,7 @@ public sealed class ScopedContentProcessorTests
                     ],
                     ExecutionMode = ExecutionMode.EvaluateInline
                 }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
@@ -194,10 +194,10 @@ public sealed class ScopedContentProcessorTests
 
         var pcResponse = new ProcessContentResponse
         {
-            PolicyActions = new List<DlpActionInfo>
-            {
+            PolicyActions =
+            [
                 new() { Action = DlpAction.NotifyUser }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.ProcessContentAsync(
@@ -229,8 +229,8 @@ public sealed class ScopedContentProcessorTests
 
         var cachedPsResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -240,7 +240,7 @@ public sealed class ScopedContentProcessorTests
                     ],
                     ExecutionMode = ExecutionMode.EvaluateInline
                 }
-            }
+            ]
         };
 
         this._mockCacheProvider.Setup(x => x.GetAsync<ProtectionScopesCacheKey, ProtectionScopesResponse>(
@@ -249,7 +249,7 @@ public sealed class ScopedContentProcessorTests
 
         var pcResponse = new ProcessContentResponse
         {
-            PolicyActions = new List<DlpActionInfo>()
+            PolicyActions = []
         };
 
         this._mockPurviewClient.Setup(x => x.ProcessContentAsync(
@@ -285,8 +285,8 @@ public sealed class ScopedContentProcessorTests
 
         var psResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -296,7 +296,7 @@ public sealed class ScopedContentProcessorTests
                     ],
                     ExecutionMode = ExecutionMode.EvaluateInline
                 }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
@@ -306,7 +306,7 @@ public sealed class ScopedContentProcessorTests
         var pcResponse = new ProcessContentResponse
         {
             ProtectionScopeState = ProtectionScopeState.Modified,
-            PolicyActions = new List<DlpActionInfo>()
+            PolicyActions = []
         };
 
         this._mockPurviewClient.Setup(x => x.ProcessContentAsync(
@@ -342,8 +342,8 @@ public sealed class ScopedContentProcessorTests
 
         var psResponse = new ProtectionScopesResponse
         {
-            Scopes = new List<PolicyScopeBase>
-            {
+            Scopes =
+            [
                 new()
                 {
                     Activities = ProtectionScopeActivities.UploadText,
@@ -352,7 +352,7 @@ public sealed class ScopedContentProcessorTests
                         new ("microsoft.graph.policyLocationApplication", "app-456")
                     ]
                 }
-            }
+            ]
         };
 
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
@@ -436,7 +436,7 @@ public sealed class ScopedContentProcessorTests
             It.IsAny<ProtectionScopesCacheKey>(), It.IsAny<CancellationToken>()))
             .ReturnsAsync((ProtectionScopesResponse?)null);
 
-        var psResponse = new ProtectionScopesResponse { Scopes = new List<PolicyScopeBase>() };
+        var psResponse = new ProtectionScopesResponse { Scopes = [] };
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
             It.IsAny<ProtectionScopesRequest>(), It.IsAny<CancellationToken>()))
             .ReturnsAsync(psResponse);
@@ -471,7 +471,7 @@ public sealed class ScopedContentProcessorTests
             It.IsAny<ProtectionScopesCacheKey>(), It.IsAny<CancellationToken>()))
             .ReturnsAsync((ProtectionScopesResponse?)null);
 
-        var psResponse = new ProtectionScopesResponse { Scopes = new List<PolicyScopeBase>() };
+        var psResponse = new ProtectionScopesResponse { Scopes = [] };
         this._mockPurviewClient.Setup(x => x.GetProtectionScopesAsync(
             It.IsAny<ProtectionScopesRequest>(), It.IsAny<CancellationToken>()))
             .ReturnsAsync(psResponse);

dotnet/tests/Microsoft.Agents.AI.UnitTests/Data/TextSearchProviderTests.cs

@@ -30,6 +30,10 @@ public sealed class TextSearchProviderTests
         this._loggerFactoryMock
             .Setup(f => f.CreateLogger(typeof(TextSearchProvider).FullName!))
             .Returns(this._loggerMock.Object);
+
+        this._loggerMock
+            .Setup(f => f.IsEnabled(It.IsAny<LogLevel>()))
+            .Returns(true);
     }
 
     [Theory]
@@ -135,7 +139,7 @@ public sealed class TextSearchProviderTests
             FunctionToolDescription = overrideDescription
         };
         var provider = new TextSearchProvider(this.NoResultSearchAsync, default, null, options);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Q?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Q?")]);
 
         // Act
         var aiContext = await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -154,7 +158,7 @@ public sealed class TextSearchProviderTests
     {
         // Arrange
         var provider = new TextSearchProvider(this.FailingSearchAsync, default, null, loggerFactory: this._loggerFactoryMock.Object);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Q?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Q?")]);
 
         // Act
         var aiContext = await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -247,7 +251,7 @@ public sealed class TextSearchProviderTests
             ContextFormatter = r => $"Custom formatted context with {r.Count} results."
         };
         var provider = new TextSearchProvider(SearchDelegateAsync, default, null, options);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Q?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Q?")]);
 
         // Act
         var aiContext = await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -281,7 +285,7 @@ public sealed class TextSearchProviderTests
             ContextFormatter = r => string.Join(",", r.Select(x => ((RawPayload)x.RawRepresentation!).Id))
         };
         var provider = new TextSearchProvider(SearchDelegateAsync, default, null, options);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Q?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Q?")]);
 
         // Act
         var aiContext = await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -298,7 +302,7 @@ public sealed class TextSearchProviderTests
         // Arrange
         var options = new TextSearchProviderOptions { SearchTime = TextSearchProviderOptions.TextSearchBehavior.BeforeAIInvoke };
         var provider = new TextSearchProvider(this.NoResultSearchAsync, default, null, options);
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "Q?") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "Q?")]);
 
         // Act
         var aiContext = await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -338,10 +342,10 @@ public sealed class TextSearchProviderTests
         };
         await provider.InvokedAsync(new(initialMessages, aiContextProviderMessages: null) { InvokeException = new InvalidOperationException("Request Failed") });
 
-        var invokingContext = new AIContextProvider.InvokingContext(new[]
-        {
+        var invokingContext = new AIContextProvider.InvokingContext(
+        [
             new ChatMessage(ChatRole.User, "E")
-        });
+        ]);
 
         // Act
         await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -378,10 +382,10 @@ public sealed class TextSearchProviderTests
         };
         await provider.InvokedAsync(new(initialMessages, aiContextProviderMessages: null));
 
-        var invokingContext = new AIContextProvider.InvokingContext(new[]
-        {
+        var invokingContext = new AIContextProvider.InvokingContext(
+        [
             new ChatMessage(ChatRole.User, "E")
-        });
+        ]);
 
         // Act
         await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -409,21 +413,21 @@ public sealed class TextSearchProviderTests
         var provider = new TextSearchProvider(SearchDelegateAsync, default, null, options);
 
         // First memory update (A,B)
-        await provider.InvokedAsync(new(new[]
-        {
+        await provider.InvokedAsync(new(
+        [
             new ChatMessage(ChatRole.User, "A"),
             new ChatMessage(ChatRole.Assistant, "B"),
-        }, aiContextProviderMessages: null));
+        ], aiContextProviderMessages: null));
 
         // Second memory update (C,D,E)
-        await provider.InvokedAsync(new(new[]
-        {
+        await provider.InvokedAsync(new(
+        [
             new ChatMessage(ChatRole.User, "C"),
             new ChatMessage(ChatRole.Assistant, "D"),
             new ChatMessage(ChatRole.User, "E"),
-        }, aiContextProviderMessages: null));
+        ], aiContextProviderMessages: null));
 
-        var invokingContext = new AIContextProvider.InvokingContext(new[] { new ChatMessage(ChatRole.User, "F") });
+        var invokingContext = new AIContextProvider.InvokingContext([new ChatMessage(ChatRole.User, "F")]);
 
         // Act
         await provider.InvokingAsync(invokingContext, CancellationToken.None);
@@ -460,10 +464,10 @@ public sealed class TextSearchProviderTests
         };
         await provider.InvokedAsync(new(initialMessages, null));
 
-        var invokingContext = new AIContextProvider.InvokingContext(new[]
-        {
+        var invokingContext = new AIContextProvider.InvokingContext(
+        [
             new ChatMessage(ChatRole.User, "Question?") // Current request message always appended.
-        });
+        ]);
 
         // Act
         await provider.InvokingAsync(invokingContext, CancellationToken.None);

dotnet/tests/Microsoft.Agents.AI.UnitTests/Memory/ChatHistoryMemoryProviderTests.cs

@@ -36,6 +36,10 @@ public class ChatHistoryMemoryProviderTests
             .Setup(f => f.CreateLogger(typeof(ChatHistoryMemoryProvider).FullName!))
             .Returns(this._loggerMock.Object);
 
+        this._loggerMock
+            .Setup(f => f.IsEnabled(It.IsAny<LogLevel>()))
+            .Returns(true);
+
         this._vectorStoreCollectionMock = new(MockBehavior.Strict);
         this._vectorStoreMock = new(MockBehavior.Strict);
 
@@ -218,8 +222,8 @@ public class ChatHistoryMemoryProviderTests
     [Theory]
     [InlineData(false, false, 0)]
     [InlineData(true, false, 0)]
-    [InlineData(false, true, 1)]
-    [InlineData(true, true, 1)]
+    [InlineData(false, true, 2)]
+    [InlineData(true, true, 2)]
     public async Task InvokedAsync_LogsUserIdBasedOnEnableSensitiveTelemetryDataAsync(bool enableSensitiveTelemetryData, bool requestThrows, int expectedLogInvocations)
     {
         // Arrange
@@ -259,6 +263,11 @@ public class ChatHistoryMemoryProviderTests
         Assert.Equal(expectedLogInvocations, this._loggerMock.Invocations.Count);
         foreach (var logInvocation in this._loggerMock.Invocations)
         {
+            if (logInvocation.Method.Name == nameof(ILogger.IsEnabled))
+            {
+                continue;
+            }
+
             var state = Assert.IsType<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2], exactMatch: false);
             var userIdValue = state.First(kvp => kvp.Key == "UserId").Value;
             Assert.Equal(enableSensitiveTelemetryData ? "user1" : "<redacted>", userIdValue);
@@ -385,10 +394,10 @@ public class ChatHistoryMemoryProviderTests
     }
 
     [Theory]
-    [InlineData(false, false, 1)]
-    [InlineData(true, false, 1)]
-    [InlineData(false, true, 1)]
-    [InlineData(true, true, 1)]
+    [InlineData(false, false, 2)]
+    [InlineData(true, false, 2)]
+    [InlineData(false, true, 2)]
+    [InlineData(true, true, 2)]
     public async Task InvokingAsync_LogsUserIdBasedOnEnableSensitiveTelemetryDataAsync(bool enableSensitiveTelemetryData, bool requestThrows, int expectedLogInvocations)
     {
         // Arrange
@@ -442,7 +451,12 @@ public class ChatHistoryMemoryProviderTests
         Assert.Equal(expectedLogInvocations, this._loggerMock.Invocations.Count);
         foreach (var logInvocation in this._loggerMock.Invocations)
         {
-            var state = Assert.IsAssignableFrom<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2]);
+            if (logInvocation.Method.Name == nameof(ILogger.IsEnabled))
+            {
+                continue;
+            }
+
+            var state = Assert.IsType<IReadOnlyList<KeyValuePair<string, object?>>>(logInvocation.Arguments[2], exactMatch: false);
             var userIdValue = state.First(kvp => kvp.Key == "UserId").Value;
             Assert.Equal(enableSensitiveTelemetryData ? "user1" : "<redacted>", userIdValue);
 

dotnet/tests/Microsoft.Agents.AI.Workflows.UnitTests/TestEchoAgent.cs

@@ -57,7 +57,7 @@ internal class TestEchoAgent(string? id = null, string? name = null, string? pre
 
     protected virtual IEnumerable<ChatMessage> GetEpilogueMessages(AgentRunOptions? options = null)
     {
-        return Enumerable.Empty<ChatMessage>();
+        return [];
     }
 
     public override Task<AgentRunResponse> RunAsync(IEnumerable<ChatMessage> messages, AgentThread? thread = null, AgentRunOptions? options = null, CancellationToken cancellationToken = default)