Updated

dotnet/src/Microsoft.Agents.AI/Compaction/CompactingChatClient.cs

@@ -64,7 +64,7 @@ internal sealed class CompactingChatClient : DelegatingChatClient
         [EnumeratorCancellation] CancellationToken cancellationToken = default)
     {
         IEnumerable<ChatMessage> compactedMessages = await this.ApplyCompactionAsync(messages, cancellationToken).ConfigureAwait(false);
-        await foreach (var update in base.GetStreamingResponseAsync(compactedMessages, options, cancellationToken).ConfigureAwait(false))
+        await foreach (ChatResponseUpdate update in base.GetStreamingResponseAsync(compactedMessages, options, cancellationToken).ConfigureAwait(false))
         {
             yield return update;
         }

dotnet/src/Microsoft.Agents.AI/Compaction/CompactionTriggers.cs

@@ -15,7 +15,7 @@ namespace Microsoft.Agents.AI.Compaction;
 public static class CompactionTriggers
 {
     /// <summary>
-    /// Always triger compaction, regardless of the message index state.
+    /// Always trigger compaction, regardless of the message index state.
     /// </summary>
     public static readonly CompactionTrigger Always =
         _ => true;

dotnet/src/Microsoft.Agents.AI/Compaction/MessageIndex.cs

@@ -240,8 +240,6 @@ public sealed class MessageIndex
     /// <returns>A list of all <see cref="ChatMessage"/> instances, in order.</returns>
     public IEnumerable<ChatMessage> GetAllMessages() => this.Groups.SelectMany(group => group.Messages);
 
-    #region Total aggregates (all groups, including excluded)
-
     /// <summary>
     /// Gets the total number of groups, including excluded ones.
     /// </summary>
@@ -262,10 +260,6 @@ public sealed class MessageIndex
     /// </summary>
     public int TotalTokenCount => this.Groups.Sum(g => g.TokenCount);
 
-    #endregion
-
-    #region Included aggregates (non-excluded groups only)
-
     /// <summary>
     /// Gets the total number of groups that are not excluded.
     /// </summary>
@@ -286,10 +280,6 @@ public sealed class MessageIndex
     /// </summary>
     public int IncludedTokenCount => this.Groups.Where(g => !g.IsExcluded).Sum(g => g.TokenCount);
 
-    #endregion
-
-    #region Turn aggregates
-
     /// <summary>
     /// Gets the total number of user turns across all groups (including those with excluded groups).
     /// </summary>
@@ -308,8 +298,6 @@ public sealed class MessageIndex
     public IEnumerable<MessageGroup> GetTurnGroups(int turnIndex) =>
         this.Groups.Where(g => g.TurnIndex == turnIndex);
 
-    #endregion
-
     /// <summary>
     /// Computes the UTF-8 byte count for a set of messages.
     /// </summary>

dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/CompactionTriggersTests.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using Microsoft.Agents.AI.Compaction;
 using Microsoft.Extensions.AI;
@@ -11,7 +11,7 @@ namespace Microsoft.Agents.AI.UnitTests.Compaction;
 public class CompactionTriggersTests
 {
     [Fact]
-    public void TokensExceed_ReturnsTrueWhenAboveThreshold()
+    public void TokensExceedReturnsTrueWhenAboveThreshold()
     {
         // Arrange — use a long message to guarantee tokens > 0
         CompactionTrigger trigger = CompactionTriggers.TokensExceed(0);
@@ -22,7 +22,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void TokensExceed_ReturnsFalseWhenBelowThreshold()
+    public void TokensExceedReturnsFalseWhenBelowThreshold()
     {
         CompactionTrigger trigger = CompactionTriggers.TokensExceed(999_999);
         MessageIndex index = MessageIndex.Create([new ChatMessage(ChatRole.User, "Hi")]);
@@ -31,7 +31,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void MessagesExceed_ReturnsExpectedResult()
+    public void MessagesExceedReturnsExpectedResult()
     {
         CompactionTrigger trigger = CompactionTriggers.MessagesExceed(2);
         MessageIndex small = MessageIndex.Create(
@@ -51,7 +51,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void TurnsExceed_ReturnsExpectedResult()
+    public void TurnsExceedReturnsExpectedResult()
     {
         CompactionTrigger trigger = CompactionTriggers.TurnsExceed(1);
         MessageIndex oneTurn = MessageIndex.Create(
@@ -71,7 +71,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void GroupsExceed_ReturnsExpectedResult()
+    public void GroupsExceedReturnsExpectedResult()
     {
         CompactionTrigger trigger = CompactionTriggers.GroupsExceed(2);
         MessageIndex index = MessageIndex.Create(
@@ -85,7 +85,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void HasToolCalls_ReturnsTrueWhenToolCallGroupExists()
+    public void HasToolCallsReturnsTrueWhenToolCallGroupExists()
     {
         CompactionTrigger trigger = CompactionTriggers.HasToolCalls();
         MessageIndex index = MessageIndex.Create(
@@ -99,7 +99,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void HasToolCalls_ReturnsFalseWhenNoToolCallGroup()
+    public void HasToolCallsReturnsFalseWhenNoToolCallGroup()
     {
         CompactionTrigger trigger = CompactionTriggers.HasToolCalls();
         MessageIndex index = MessageIndex.Create(
@@ -112,7 +112,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void All_RequiresAllConditions()
+    public void AllRequiresAllConditions()
     {
         CompactionTrigger trigger = CompactionTriggers.All(
             CompactionTriggers.TokensExceed(0),
@@ -125,7 +125,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void Any_RequiresAtLeastOneCondition()
+    public void AnyRequiresAtLeastOneCondition()
     {
         CompactionTrigger trigger = CompactionTriggers.Any(
             CompactionTriggers.TokensExceed(999_999),
@@ -138,7 +138,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void All_EmptyTriggers_ReturnsTrue()
+    public void AllEmptyTriggersReturnsTrue()
     {
         CompactionTrigger trigger = CompactionTriggers.All();
         MessageIndex index = MessageIndex.Create([new ChatMessage(ChatRole.User, "A")]);
@@ -146,7 +146,7 @@ public class CompactionTriggersTests
     }
 
     [Fact]
-    public void Any_EmptyTriggers_ReturnsFalse()
+    public void AnyEmptyTriggersReturnsFalse()
     {
         CompactionTrigger trigger = CompactionTriggers.Any();
         MessageIndex index = MessageIndex.Create([new ChatMessage(ChatRole.User, "A")]);

dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/MessageIndexTests.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System.Collections.Generic;
 using Microsoft.Agents.AI.Compaction;
@@ -12,7 +12,7 @@ namespace Microsoft.Agents.AI.UnitTests.Compaction;
 public class MessageIndexTests
 {
     [Fact]
-    public void Create_EmptyList_ReturnsEmptyGroups()
+    public void CreateEmptyListReturnsEmptyGroups()
     {
         // Arrange
         List<ChatMessage> messages = [];
@@ -25,7 +25,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_SystemMessage_CreatesSystemGroup()
+    public void CreateSystemMessageCreatesSystemGroup()
     {
         // Arrange
         List<ChatMessage> messages =
@@ -43,7 +43,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_UserMessage_CreatesUserGroup()
+    public void CreateUserMessageCreatesUserGroup()
     {
         // Arrange
         List<ChatMessage> messages =
@@ -60,7 +60,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_AssistantTextMessage_CreatesAssistantTextGroup()
+    public void CreateAssistantTextMessageCreatesAssistantTextGroup()
     {
         // Arrange
         List<ChatMessage> messages =
@@ -77,7 +77,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_ToolCallWithResults_CreatesAtomicToolCallGroup()
+    public void CreateToolCallWithResultsCreatesAtomicToolCallGroup()
     {
         // Arrange
         ChatMessage assistantMessage = new(ChatRole.Assistant, [new FunctionCallContent("call1", "get_weather", new Dictionary<string, object?> { ["city"] = "Seattle" })]);
@@ -97,7 +97,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_MixedConversation_GroupsCorrectly()
+    public void CreateMixedConversationGroupsCorrectly()
     {
         // Arrange
         ChatMessage systemMsg = new(ChatRole.System, "You are helpful.");
@@ -121,7 +121,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_MultipleToolResults_GroupsAllWithAssistant()
+    public void CreateMultipleToolResultsGroupsAllWithAssistant()
     {
         // Arrange
         ChatMessage assistantToolCall = new(ChatRole.Assistant, [
@@ -143,7 +143,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void GetIncludedMessages_ExcludesMarkedGroups()
+    public void GetIncludedMessagesExcludesMarkedGroups()
     {
         // Arrange
         ChatMessage msg1 = new(ChatRole.User, "First");
@@ -163,7 +163,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void GetAllMessages_IncludesExcludedGroups()
+    public void GetAllMessagesIncludesExcludedGroups()
     {
         // Arrange
         ChatMessage msg1 = new(ChatRole.User, "First");
@@ -180,7 +180,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void IncludedGroupCount_ReflectsExclusions()
+    public void IncludedGroupCountReflectsExclusions()
     {
         // Arrange
         MessageIndex groups = MessageIndex.Create(
@@ -198,7 +198,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_SummaryMessage_CreatesSummaryGroup()
+    public void CreateSummaryMessageCreatesSummaryGroup()
     {
         // Arrange
         ChatMessage summaryMessage = new(ChatRole.Assistant, "[Summary of earlier conversation]: key facts...");
@@ -216,7 +216,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_SummaryAmongOtherMessages_GroupsCorrectly()
+    public void CreateSummaryAmongOtherMessagesGroupsCorrectly()
     {
         // Arrange
         ChatMessage systemMsg = new(ChatRole.System, "You are helpful.");
@@ -237,7 +237,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void MessageGroup_StoresPassedCounts()
+    public void MessageGroupStoresPassedCounts()
     {
         // Arrange & Act
         MessageGroup group = new(MessageGroupKind.User, [new ChatMessage(ChatRole.User, "Hello")], byteCount: 5, tokenCount: 2);
@@ -249,7 +249,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void MessageGroup_MessagesAreImmutable()
+    public void MessageGroupMessagesAreImmutable()
     {
         // Arrange
         IReadOnlyList<ChatMessage> messages = [new ChatMessage(ChatRole.User, "Hello")];
@@ -261,7 +261,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_ComputesByteCount_Utf8()
+    public void CreateComputesByteCountUtf8()
     {
         // Arrange — "Hello" is 5 UTF-8 bytes
         MessageIndex groups = MessageIndex.Create([new ChatMessage(ChatRole.User, "Hello")]);
@@ -271,7 +271,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_ComputesByteCount_MultiByteChars()
+    public void CreateComputesByteCountMultiByteChars()
     {
         // Arrange — "café" has a multi-byte 'é' (2 bytes in UTF-8) → 5 bytes total
         MessageIndex groups = MessageIndex.Create([new ChatMessage(ChatRole.User, "café")]);
@@ -281,7 +281,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_ComputesByteCount_MultipleMessagesInGroup()
+    public void CreateComputesByteCountMultipleMessagesInGroup()
     {
         // Arrange — ToolCall group: assistant (tool call, null text) + tool result "OK" (2 bytes)
         ChatMessage assistantMsg = new(ChatRole.Assistant, [new FunctionCallContent("call1", "fn")]);
@@ -295,7 +295,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_DefaultTokenCount_IsHeuristic()
+    public void CreateDefaultTokenCountIsHeuristic()
     {
         // Arrange — "Hello world test data!" = 22 UTF-8 bytes → 22 / 4 = 5 estimated tokens
         MessageIndex groups = MessageIndex.Create([new ChatMessage(ChatRole.User, "Hello world test data!")]);
@@ -306,7 +306,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_NullText_HasZeroCounts()
+    public void CreateNullTextHasZeroCounts()
     {
         // Arrange — message with no text (e.g., pure function call)
         ChatMessage msg = new(ChatRole.Assistant, [new FunctionCallContent("call1", "get_weather")]);
@@ -320,7 +320,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void TotalAggregates_SumAllGroups()
+    public void TotalAggregatesSumAllGroups()
     {
         // Arrange
         MessageIndex groups = MessageIndex.Create(
@@ -339,7 +339,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void IncludedAggregates_ExcludeMarkedGroups()
+    public void IncludedAggregatesExcludeMarkedGroups()
     {
         // Arrange
         MessageIndex groups = MessageIndex.Create(
@@ -363,7 +363,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void ToolCallGroup_AggregatesAcrossMessages()
+    public void ToolCallGroupAggregatesAcrossMessages()
     {
         // Arrange — tool call group with assistant "Ask" (3 bytes) + tool result "OK" (2 bytes)
         ChatMessage assistantMsg = new(ChatRole.Assistant, [new FunctionCallContent("call1", "fn")]);
@@ -380,7 +380,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_AssignsTurnIndices_SingleTurn()
+    public void CreateAssignsTurnIndicesSingleTurn()
     {
         // Arrange — System (no turn), User + Assistant = turn 1
         MessageIndex groups = MessageIndex.Create(
@@ -399,7 +399,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_AssignsTurnIndices_MultiTurn()
+    public void CreateAssignsTurnIndicesMultiTurn()
     {
         // Arrange — 3 user turns
         MessageIndex groups = MessageIndex.Create(
@@ -423,7 +423,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void Create_TurnSpansToolCallGroups()
+    public void CreateTurnSpansToolCallGroups()
     {
         // Arrange — turn 1 includes User, ToolCall, AssistantText
         ChatMessage assistantToolCall = new(ChatRole.Assistant, [new FunctionCallContent("call1", "get_weather")]);
@@ -446,7 +446,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void GetTurnGroups_ReturnsGroupsForSpecificTurn()
+    public void GetTurnGroupsReturnsGroupsForSpecificTurn()
     {
         // Arrange
         MessageIndex groups = MessageIndex.Create(
@@ -472,7 +472,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void IncludedTurnCount_ReflectsExclusions()
+    public void IncludedTurnCountReflectsExclusions()
     {
         // Arrange — 2 turns, exclude all groups in turn 1
         MessageIndex groups = MessageIndex.Create(
@@ -492,7 +492,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void TotalTurnCount_ZeroWhenNoUserMessages()
+    public void TotalTurnCountZeroWhenNoUserMessages()
     {
         // Arrange — only system messages
         MessageIndex groups = MessageIndex.Create(
@@ -506,7 +506,7 @@ public class MessageIndexTests
     }
 
     [Fact]
-    public void IncludedTurnCount_PartialExclusion_StillCountsTurn()
+    public void IncludedTurnCountPartialExclusionStillCountsTurn()
     {
         // Arrange — turn 1 has 2 groups, only one excluded
         MessageIndex groups = MessageIndex.Create(

dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/PipelineCompactionStrategyTests.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System;
 using System.Collections.Generic;
@@ -15,7 +15,7 @@ namespace Microsoft.Agents.AI.UnitTests.Compaction;
 public class PipelineCompactionStrategyTests
 {
     [Fact]
-    public async Task CompactAsync_ExecutesAllStrategiesInOrderAsync()
+    public async Task CompactAsyncExecutesAllStrategiesInOrderAsync()
     {
         // Arrange
         List<string> executionOrder = [];
@@ -44,7 +44,7 @@ public class PipelineCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_ReturnsFalse_WhenNoStrategyCompactsAsync()
+    public async Task CompactAsyncReturnsFalseWhenNoStrategyCompactsAsync()
     {
         // Arrange
         TestCompactionStrategy strategy1 = new(_ => false);
@@ -60,7 +60,7 @@ public class PipelineCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_ReturnsTrue_WhenAnyStrategyCompactsAsync()
+    public async Task CompactAsyncReturnsTrueWhenAnyStrategyCompactsAsync()
     {
         // Arrange
         TestCompactionStrategy strategy1 = new(_ => false);
@@ -77,7 +77,7 @@ public class PipelineCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_ContinuesAfterFirstCompaction_WhenEarlyStopDisabledAsync()
+    public async Task CompactAsyncContinuesAfterFirstCompactionAsync()
     {
         // Arrange
         TestCompactionStrategy strategy1 = new(_ => true);
@@ -95,7 +95,7 @@ public class PipelineCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_ComposesStrategies_EndToEndAsync()
+    public async Task CompactAsyncComposesStrategiesEndToEndAsync()
     {
         // Arrange — pipeline: first exclude oldest 2 non-system groups, then exclude 2 more
         static void ExcludeOldest2(MessageIndex index)
@@ -154,7 +154,7 @@ public class PipelineCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_EmptyPipeline_ReturnsFalseAsync()
+    public async Task CompactAsyncEmptyPipelineReturnsFalseAsync()
     {
         // Arrange
         PipelineCompactionStrategy pipeline = new(new List<CompactionStrategy>());

dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/SlidingWindowCompactionStrategyTests.cs

@@ -1,4 +1,4 @@
-// Copyright (c) Microsoft. All rights reserved.
+// Copyright (c) Microsoft. All rights reserved.
 
 using System.Collections.Generic;
 using System.Threading.Tasks;
@@ -13,7 +13,7 @@ namespace Microsoft.Agents.AI.UnitTests.Compaction;
 public class SlidingWindowCompactionStrategyTests
 {
     [Fact]
-    public async Task CompactAsync_BelowMaxTurns_ReturnsFalseAsync()
+    public async Task CompactAsyncBelowMaxTurnsReturnsFalseAsync()
     {
         // Arrange
         SlidingWindowCompactionStrategy strategy = new(maximumTurns: 3);
@@ -33,7 +33,7 @@ public class SlidingWindowCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_ExceedsMaxTurns_ExcludesOldestTurnsAsync()
+    public async Task CompactAsyncExceedsMaxTurnsExcludesOldestTurnsAsync()
     {
         // Arrange — keep 2 turns, conversation has 3
         SlidingWindowCompactionStrategy strategy = new(maximumTurns: 2);
@@ -63,7 +63,7 @@ public class SlidingWindowCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreservesSystemMessagesAsync()
+    public async Task CompactAsyncPreservesSystemMessagesAsync()
     {
         // Arrange
         SlidingWindowCompactionStrategy strategy = new(maximumTurns: 1);
@@ -87,7 +87,7 @@ public class SlidingWindowCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreservesToolCallGroupsInKeptTurnsAsync()
+    public async Task CompactAsyncPreservesToolCallGroupsInKeptTurnsAsync()
     {
         // Arrange
         SlidingWindowCompactionStrategy strategy = new(maximumTurns: 1);
@@ -114,7 +114,7 @@ public class SlidingWindowCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_CustomTrigger_OverridesDefaultAsync()
+    public async Task CompactAsyncCustomTriggerOverridesDefaultAsync()
     {
         // Arrange — custom trigger: only compact when tokens exceed threshold
         SlidingWindowCompactionStrategy strategy = new(maximumTurns: 99);
@@ -134,7 +134,7 @@ public class SlidingWindowCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_IncludedMessages_ContainOnlyKeptTurnsAsync()
+    public async Task CompactAsyncIncludedMessagesContainOnlyKeptTurnsAsync()
     {
         // Arrange
         SlidingWindowCompactionStrategy strategy = new(maximumTurns: 1);

dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/ToolResultCompactionStrategyTests.cs

@@ -14,7 +14,7 @@ namespace Microsoft.Agents.AI.UnitTests.Compaction;
 public class ToolResultCompactionStrategyTests
 {
     [Fact]
-    public async Task CompactAsync_TriggerNotMet_ReturnsFalseAsync()
+    public async Task CompactAsyncTriggerNotMetReturnsFalseAsync()
     {
         // Arrange — trigger requires > 1000 tokens
         ToolResultCompactionStrategy strategy = new(CompactionTriggers.TokensExceed(1000));
@@ -37,7 +37,7 @@ public class ToolResultCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_CollapsesOldToolGroupsAsync()
+    public async Task CompactAsyncCollapsesOldToolGroupsAsync()
     {
         // Arrange — always trigger
         ToolResultCompactionStrategy strategy = new(
@@ -67,7 +67,7 @@ public class ToolResultCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreservesRecentToolGroupsAsync()
+    public async Task CompactAsyncPreservesRecentToolGroupsAsync()
     {
         // Arrange — protect 2 recent non-system groups (the tool group + Q2)
         ToolResultCompactionStrategy strategy = new(
@@ -90,7 +90,7 @@ public class ToolResultCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreservesSystemMessagesAsync()
+    public async Task CompactAsyncPreservesSystemMessagesAsync()
     {
         // Arrange
         ToolResultCompactionStrategy strategy = new(
@@ -115,7 +115,7 @@ public class ToolResultCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_ExtractsMultipleToolNamesAsync()
+    public async Task CompactAsyncExtractsMultipleToolNamesAsync()
     {
         // Arrange — assistant calls two tools
         ToolResultCompactionStrategy strategy = new(
@@ -148,7 +148,7 @@ public class ToolResultCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_NoToolGroups_ReturnsFalseAsync()
+    public async Task CompactAsyncNoToolGroupsReturnsFalseAsync()
     {
         // Arrange — trigger fires but no tool groups to collapse
         ToolResultCompactionStrategy strategy = new(
@@ -169,7 +169,7 @@ public class ToolResultCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_CompoundTrigger_RequiresTokensAndToolCallsAsync()
+    public async Task CompactAsyncCompoundTriggerRequiresTokensAndToolCallsAsync()
     {
         // Arrange — compound: tokens > 0 AND has tool calls
         ToolResultCompactionStrategy strategy = new(

dotnet/tests/Microsoft.Agents.AI.UnitTests/Compaction/TruncationCompactionStrategyTests.cs

@@ -15,7 +15,7 @@ public class TruncationCompactionStrategyTests
     private static readonly CompactionTrigger s_alwaysTrigger = _ => true;
 
     [Fact]
-    public async Task CompactAsync_AlwaysTrigger_CompactsToPreserveRecentAsync()
+    public async Task CompactAsyncAlwaysTriggerCompactsToPreserveRecentAsync()
     {
         // Arrange — always-trigger means always compact
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 1);
@@ -35,7 +35,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_TriggerNotMet_ReturnsFalseAsync()
+    public async Task CompactAsyncTriggerNotMetReturnsFalseAsync()
     {
         // Arrange — trigger requires > 1000 tokens, conversation is tiny
         TruncationCompactionStrategy strategy = new(
@@ -57,7 +57,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_TriggerMet_ExcludesOldestGroupsAsync()
+    public async Task CompactAsyncTriggerMetExcludesOldestGroupsAsync()
     {
         // Arrange — trigger on groups > 2
         TruncationCompactionStrategy strategy = new(
@@ -86,7 +86,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreservesSystemMessagesAsync()
+    public async Task CompactAsyncPreservesSystemMessagesAsync()
     {
         // Arrange
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 1);
@@ -114,7 +114,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreservesToolCallGroupAtomicityAsync()
+    public async Task CompactAsyncPreservesToolCallGroupAtomicityAsync()
     {
         // Arrange
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 1);
@@ -138,7 +138,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_SetsExcludeReasonAsync()
+    public async Task CompactAsyncSetsExcludeReasonAsync()
     {
         // Arrange
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 1);
@@ -157,7 +157,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_SkipsAlreadyExcludedGroupsAsync()
+    public async Task CompactAsyncSkipsAlreadyExcludedGroupsAsync()
     {
         // Arrange
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 1);
@@ -180,7 +180,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_PreserveRecentGroups_KeepsMultipleAsync()
+    public async Task CompactAsyncPreserveRecentGroupsKeepsMultipleAsync()
     {
         // Arrange — keep 2 most recent
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 2);
@@ -204,7 +204,7 @@ public class TruncationCompactionStrategyTests
     }
 
     [Fact]
-    public async Task CompactAsync_NothingToRemove_ReturnsFalseAsync()
+    public async Task CompactAsyncNothingToRemoveReturnsFalseAsync()
     {
         // Arrange — preserve 5 but only 2 groups
         TruncationCompactionStrategy strategy = new(s_alwaysTrigger, preserveRecentGroups: 5);