chore: import upstream snapshot with attribution

dotnet/tests/Microsoft.Agents.AI.DurableTask.IntegrationTests/Logging/TestLogger.cs

@@ -0,0 +1,49 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Collections.Concurrent;
+using Microsoft.Extensions.Logging;
+
+namespace Microsoft.Agents.AI.DurableTask.IntegrationTests.Logging;
+
+internal sealed class TestLogger(string category, ITestOutputHelper output) : ILogger
+{
+    private readonly string _category = category;
+    private readonly ITestOutputHelper _output = output;
+    private readonly ConcurrentQueue<LogEntry> _entries = new();
+
+    public IReadOnlyCollection<LogEntry> GetLogs() => this._entries;
+
+    public void ClearLogs() => this._entries.Clear();
+
+    IDisposable? ILogger.BeginScope<TState>(TState state) => null;
+
+    bool ILogger.IsEnabled(LogLevel logLevel) => true;
+
+    void ILogger.Log<TState>(
+        LogLevel logLevel,
+        EventId eventId,
+        TState state,
+        Exception? exception,
+        Func<TState, Exception?, string> formatter)
+    {
+        LogEntry entry = new(
+            category: this._category,
+            level: logLevel,
+            eventId: eventId,
+            exception: exception,
+            message: formatter(state, exception),
+            state: state,
+            contextProperties: []);
+
+        this._entries.Enqueue(entry);
+
+        try
+        {
+            this._output.WriteLine(entry.ToString());
+        }
+        catch (InvalidOperationException)
+        {
+            // Expected when tests are shutting down
+        }
+    }
+}