Fix failing CertificateValidationRemoteServer.ConnectWithRevocation_WithCallback test (dotnet#99915)

* Don't add empty Organization to Subject string

* Make sure testName is populated when creating test PKI

* Minor changes

Author: rzikm

src/libraries/Common/tests/System/Security/Cryptography/X509Certificates/CertificateAuthority.cs

@@ -179,7 +179,7 @@ internal X509Certificate2 CreateOcspSigner(string subject, RSA publicKey)
                 subject,
                 publicKey,
                 TimeSpan.FromSeconds(1),
-                new X509ExtensionCollection() { s_eeConstraints, s_eeKeyUsage, s_ocspResponderEku},
+                new X509ExtensionCollection() { s_eeConstraints, s_eeKeyUsage, s_ocspResponderEku },
                 ocspResponder: true);
         }
 
@@ -950,12 +950,10 @@ private static string BuildSubject(
             PkiOptions pkiOptions,
             bool includePkiOptions)
         {
-            if (includePkiOptions)
-            {
-                return $"CN=\"{cn}\", O=\"{testName}\", OU=\"{pkiOptions}\"";
-            }
+            string testNamePart = !string.IsNullOrWhiteSpace(testName) ? $", O=\"{testName}\"" : "";
+            string pkiOptionsPart = includePkiOptions ? $", OU=\"{pkiOptions}\"" : "";
 
-            return $"CN=\"{cn}\", O=\"{testName}\"";
+            return $"CN=\"{cn}\"" + testNamePart + pkiOptionsPart;
         }
     }
 }

src/libraries/System.Net.Security/tests/FunctionalTests/CertificateValidationRemoteServer.cs

@@ -7,6 +7,7 @@
 using System.Net.Sockets;
 using System.Net.Test.Common;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using System.Security.Cryptography.X509Certificates;
 using System.Security.Cryptography.X509Certificates.Tests.Common;
@@ -188,7 +189,8 @@ static bool CertificateValidationCallback(
         private async Task ConnectWithRevocation_WithCallback_Core(
             X509RevocationMode revocationMode,
             bool? offlineContext = false,
-            bool noIntermediates = false)
+            bool noIntermediates = false,
+            [CallerMemberName] string testName = null)
         {
             string offlinePart = offlineContext.HasValue ? offlineContext.GetValueOrDefault().ToString().ToLower() : "null";
             string serverName = $"{revocationMode.ToString().ToLower()}.{offlinePart}.server.example";
@@ -201,6 +203,7 @@ private async Task ConnectWithRevocation_WithCallback_Core(
                 out CertificateAuthority rootAuthority,
                 out CertificateAuthority[] intermediateAuthorities,
                 out X509Certificate2 serverCert,
+                testName: testName,
                 intermediateAuthorityCount: noIntermediates ? 0 : 1,
                 subjectName: serverName,
                 keySize: 2048,

src/libraries/System.Net.Security/tests/FunctionalTests/SslStreamCertificateContextTests.cs

@@ -24,6 +24,7 @@ public static async Task Create_OcspDoesNotReturnOrCacheInvalidStapleData()
                 out CertificateAuthority rootAuthority,
                 out CertificateAuthority[] intermediateAuthorities,
                 out X509Certificate2 serverCert,
+                testName: nameof(Create_OcspDoesNotReturnOrCacheInvalidStapleData),
                 intermediateAuthorityCount: 1,
                 subjectName: serverName,
                 keySize: 2048,