chore: import upstream snapshot with attribution

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

@@ -0,0 +1,51 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.Collections.Concurrent;
+using Microsoft.Extensions.Logging;
+
+namespace Microsoft.Agents.AI.DurableTask.IntegrationTests.Logging;
+
+internal sealed class TestLoggerProvider(ITestOutputHelper output) : ILoggerProvider
+{
+    private readonly ITestOutputHelper _output = output ?? throw new ArgumentNullException(nameof(output));
+    private readonly ConcurrentDictionary<string, TestLogger> _loggers = new(StringComparer.OrdinalIgnoreCase);
+
+    public bool TryGetLogs(string category, out IReadOnlyCollection<LogEntry> logs)
+    {
+        if (this._loggers.TryGetValue(category, out TestLogger? logger))
+        {
+            logs = logger.GetLogs();
+            return true;
+        }
+
+        logs = [];
+        return false;
+    }
+
+    public IReadOnlyCollection<LogEntry> GetAllLogs()
+    {
+        return this._loggers.Values
+            .OfType<TestLogger>()
+            .SelectMany(logger => logger.GetLogs())
+            .ToList()
+            .AsReadOnly();
+    }
+
+    public void Clear()
+    {
+        foreach (TestLogger logger in this._loggers.Values.OfType<TestLogger>())
+        {
+            logger.ClearLogs();
+        }
+    }
+
+    ILogger ILoggerProvider.CreateLogger(string categoryName)
+    {
+        return this._loggers.GetOrAdd(categoryName, _ => new TestLogger(categoryName, this._output));
+    }
+
+    void IDisposable.Dispose()
+    {
+        // no-op
+    }
+}