adding

LCU.API.Internal.Document/OwnerNumberMigrationTest/TestDoubles/FakeLogger.cs

@@ -0,0 +1,25 @@
+using Microsoft.Extensions.Logging;
+
+namespace OwnerNumberMigrationTest.TestDoubles;
+
+public record Log(LogLevel LogLevel, Exception? Exception, string Message);
+
+public class FakeLogger : ILogger
+{
+    public IList<Log> Logs { get; }= new List<Log>();
+
+    public IDisposable BeginScope<TState>(TState state)
+    {
+        throw new NotImplementedException();
+    }
+
+    public bool IsEnabled(LogLevel logLevel)
+    {
+        throw new NotImplementedException();
+    }
+
+    public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception?, string> formatter)
+    {
+        Logs.Add(new Log(logLevel, exception, formatter(state, exception)));
+    }
+}