Add empty-team validation to MagenticWorkflowBuilder.Build() and E2E test

Agent-Logs-Url: https://github.com/microsoft/agent-framework/sessions/e490fdf7-f107-4fde-ba1f-efdfd9a729c6

Co-authored-by: lokitoth <6936551+lokitoth@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2026-05-14 01:32:44 +00:00
committed by GitHub
co-authored by lokitoth
parent 9cd4f2dc49
commit d5bbf4ec9c
2 changed files with 28 additions and 1 deletions
@@ -1,5 +1,6 @@
// Copyright (c) Microsoft. All rights reserved.
using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Threading.Tasks;
@@ -140,7 +141,15 @@ public class MagenticWorkflowBuilder(AIAgent managerAgent)
}
/// <inheritdoc cref="WorkflowBuilder.Build"/>
public Workflow Build() => this.ReduceToWorkflowBuilder().Build();
public Workflow Build()
{
if (this._team.Count == 0)
{
throw new InvalidOperationException("At least one participant must be added before building a Magentic workflow.");
}
return this.ReduceToWorkflowBuilder().Build();
}
private TaskLimits Limits => new(
MaxRoundCount: this._maxRounds,