Skip to content

.NET: Fix ReasoningSummary passthrough in GitHub Copilot resume config #6441

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
chandramouleswaran wants to merge 5 commits into
base: main
Choose a base branch
from
+28 −0
Open

.NET: Fix ReasoningSummary passthrough in GitHub Copilot resume config #6441

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
94b9606
.NET: Fix ReasoningSummary passthrough in GitHub Copilot resume config
chandramouleswaran Jun 10, 2026
2a03da5
Merge branch 'main' into chanravi-microsoft/fix-reasoningsummary-resu…
chandramouleswaran Jun 10, 2026
e98bb28
.NET: Assert ReasoningSummary/ContextTier defaults in null-source res…
chandramouleswaran Jun 10, 2026
014f4f5
Merge branch 'main' into chanravi-microsoft/fix-reasoningsummary-resu…
chandramouleswaran Jun 10, 2026
bfce265
Merge branch 'main' into chanravi-microsoft/fix-reasoningsummary-resu…
chandramouleswaran Jun 10, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions dotnet/src/Microsoft.Agents.AI.GitHub.Copilot/GitHubCopilotAgent.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -291,6 +291,8 @@ internal static ResumeSessionConfig CopyResumeSessionConfig(SessionConfig? sourc
{
Model = source?.Model,
ReasoningEffort = source?.ReasoningEffort,
ReasoningSummary = source?.ReasoningSummary,
ContextTier = source?.ContextTier,
Tools = source?.Tools,
SystemMessage = source?.SystemMessage,
AvailableTools = source?.AvailableTools,
Expand Down
26 changes: 26 additions & 0 deletions dotnet/tests/Microsoft.Agents.AI.GitHub.Copilot.UnitTests/GitHubCopilotAgentTests.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -167,6 +167,8 @@ public void CopyResumeSessionConfig_CopiesAllProperties()
{
Model = "gpt-4o",
ReasoningEffort = "high",
ReasoningSummary = ReasoningSummary.Detailed,
ContextTier = ContextTier.LongContext,
Tools = tools,
SystemMessage = systemMessage,
AvailableTools = ["tool1", "tool2"],
Expand All @@ -187,6 +189,8 @@ public void CopyResumeSessionConfig_CopiesAllProperties()
// Assert
Assert.Equal("gpt-4o", result.Model);
Assert.Equal("high", result.ReasoningEffort);
Assert.Equal(ReasoningSummary.Detailed, result.ReasoningSummary);
Assert.Equal(ContextTier.LongContext, result.ContextTier);
Assert.Same(tools, result.Tools);
Assert.Same(systemMessage, result.SystemMessage);
Assert.Equal(new List<string> { "tool1", "tool2" }, result.AvailableTools);
Expand All @@ -211,6 +215,8 @@ public void CopyResumeSessionConfig_WithNullSource_ReturnsDefaults()
// Assert
Assert.Null(result.Model);
Assert.Null(result.ReasoningEffort);
Assert.Null(result.ReasoningSummary);
Assert.Null(result.ContextTier);
Assert.Null(result.Tools);
Assert.Null(result.SystemMessage);
Assert.Null(result.OnPermissionRequest);
Expand All @@ -221,6 +227,26 @@ public void CopyResumeSessionConfig_WithNullSource_ReturnsDefaults()
Assert.True(result.Streaming);
Comment thread
chandramouleswaran marked this conversation as resolved.
}

[Fact]
public void CopyResumeSessionConfig_RoundTripsReasoningSummary()
Comment thread
chandramouleswaran marked this conversation as resolved.
{
// Regression: ReasoningSummary controls whether the model returns readable
// extended-thinking summaries. It must round-trip onto resumed turns, just like
// ReasoningEffort, otherwise callers lose readable reasoning after the first turn.
var source = new SessionConfig
{
ReasoningEffort = "high",
ReasoningSummary = ReasoningSummary.Detailed,
};

// Act
ResumeSessionConfig result = GitHubCopilotAgent.CopyResumeSessionConfig(source);

// Assert
Assert.Equal(ReasoningSummary.Detailed, result.ReasoningSummary);
Assert.Equal("high", result.ReasoningEffort);
}

[Fact]
public void ConvertToAgentResponseUpdate_AssistantMessageEvent_DoesNotEmitTextContent()
{
Expand Down
Loading