#229 added test for microseconds

Author: FreeAndNil

src/log4net.Tests/Layout/DynamicPatternLayoutTest.cs

@@ -26,13 +26,7 @@ namespace log4net.Tests.Layout;
 /// </summary>
 public class DynamicPatternLayoutTest : PatternLayoutTest
 {
-  protected override PatternLayout NewPatternLayout()
-  {
-    return new DynamicPatternLayout();
-  }
+  protected override PatternLayout NewPatternLayout() => new DynamicPatternLayout();
 
-  protected override PatternLayout NewPatternLayout(string pattern)
-  {
-    return new DynamicPatternLayout(pattern);
-  }
+  protected override PatternLayout NewPatternLayout(string pattern) => new DynamicPatternLayout(pattern);
 }

src/log4net.Tests/Layout/PatternLayoutTest.cs

@@ -31,6 +31,7 @@
 
 using NUnit.Framework;
 using System.Diagnostics.CodeAnalysis;
+using log4net.Repository.Hierarchy;
 
 namespace log4net.Tests.Layout;
 
@@ -342,6 +343,24 @@ public void TestExceptionPattern()
 
     stringAppender.Reset();
   }
+#if NET8_0_OR_GREATER
+  [Test]
+  public void ConvertMicroSecondsPatternTest()
+  {
+    StringAppender stringAppender = new()
+    {
+      Layout = NewPatternLayout("%date{yyyyMMdd HH:mm:ss.ffffff}")
+    };
+
+    ILoggerRepository rep = LogManager.CreateRepository(Guid.NewGuid().ToString());
+    BasicConfigurator.Configure(rep, stringAppender);
+
+    ILog logger = LogManager.GetLogger(rep.Name, "TestThreadProperiesPattern");
+
+    logger.Logger.Log(new(new() { TimeStampUtc = new(2025, 02, 10, 13, 01, 02, 123, 456), Message = "test", Level = Level.Info }));
+    Assert.That(stringAppender.GetString(), Is.EqualTo("20250210 14:01:02.123456"));
+  }
+#endif
 
   [SuppressMessage("Microsoft.Performance", "CA1812:AvoidUninstantiatedInternalClasses", Justification = "Reflection")]
   private sealed class MessageAsNamePatternConverter : NamedPatternConverter