Harden LogFormatSpec (#7429)

close #7421

src/core/Akka.API.Tests/LogFormatSpec.cs

@@ -107,19 +107,28 @@ await AwaitConditionAsync(() =>
         // need to sanitize the thread id
         text = SanitizeDateTime(text);
         text = SanitizeThreadNumber(text);
+        // to resolve https://github.com/akkadotnet/akka.net/issues/7421
+        text = SanitizeTestEventListener(text);
 
         await Verifier.Verify(text);
     }
+
+    private static string SanitizeTestEventListener(string logs)
+    {
+        var pattern = @"^.*Akka\.TestKit\.TestEventListener.*$";
+        var result = Regex.Replace(logs, pattern, string.Empty, RegexOptions.Multiline);
+        return result;
+    }
 
-    static string SanitizeThreadNumber(string log)
+    private static string SanitizeThreadNumber(string log)
     {
-        string pattern = @"(\[Thread )\d+(\])";
-        string replacement = "[Thread 0001]";
-        string result = Regex.Replace(log, pattern, replacement);
+        var pattern = @"(\[Thread )\d+(\])";
+        var replacement = "[Thread 0001]";
+        var result = Regex.Replace(log, pattern, replacement);
         return result;
     }
 
-    static string SanitizeDateTime(string logs, string replacement = "DateTime")
+    private static string SanitizeDateTime(string logs, string replacement = "DateTime")
     {
         // Regular expression to match the datetime
         string pattern = @"\[\d{2}/\d{2}/\d{4} \d{2}:\d{2}:\d{2}\.\d{3}Z\]";