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    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
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   */
  
  package org.apache.hc.client5.http.ssl;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import java.security.cert.X509Certificate;
  
  import javax.net.ssl.SSLEngine;
  import javax.net.ssl.SSLParameters;
  import javax.net.ssl.SSLSession;
  import javax.security.auth.x500.X500Principal;
  
  import org.apache.hc.core5.reactor.ssl.SSLBufferMode;
  import org.apache.hc.core5.reactor.ssl.TlsDetails;
  import org.apache.hc.core5.ssl.SSLContexts;
  import org.junit.jupiter.api.Test;
  
  class AbstractClientTlsStrategyTest {
  
      @Test
      void testToEscapedString_withControlCharacters() {
          // Create a X500Principal with control characters
          final X500Principal principal = new X500Principal("CN=Test\b\bName\n,O=TestOrg");
  
          // Create a mock subclass of AbstractClientTlsStrategy
          final AbstractClientTlsStrategy tlsStrategy = new AbstractClientTlsStrategy(
                  SSLContexts.createDefault(),
                  null, null, SSLBufferMode.STATIC,
                  HostnameVerificationPolicy.BUILTIN,
                  HttpsSupport.getDefaultHostnameVerifier()) {
              @Override
              void applyParameters(final SSLEngine sslEngine, final SSLParameters sslParameters, final String[] appProtocols) {
                  // No-op for test
              }
  
              @Override
              TlsDetails createTlsDetails(final SSLEngine sslEngine) {
                  return null;  // No-op for test
              }
          };
  
          // Call the toEscapedString method
          final String escaped = tlsStrategy.toEscapedString(principal);
  
          // Assert that control characters are properly escaped
          assertEquals("CN=Test\\x08\\x08Name\\x0a,O=TestOrg", escaped);
      }
  
      @Test
      void testVerifySession_escapedPeerAndIssuer() throws Exception {
          // Mock SSLSession and X509Certificate
          final SSLSession mockSession = mock(SSLSession.class);
          final X509Certificate mockCert = mock(X509Certificate.class);
  
          // Create a mock X500Principal with control characters
          final X500Principal peerPrincipal = new X500Principal("CN=Peer\bName,O=PeerOrg");
          final X500Principal issuerPrincipal = new X500Principal("CN=Issuer\bName,O=IssuerOrg");
  
          when(mockSession.getPeerCertificates()).thenReturn(new X509Certificate[]{mockCert});
          when(mockCert.getSubjectX500Principal()).thenReturn(peerPrincipal);
          when(mockCert.getIssuerX500Principal()).thenReturn(issuerPrincipal);
  
          // Create a mock subclass of AbstractClientTlsStrategy
          final AbstractClientTlsStrategy tlsStrategy = new AbstractClientTlsStrategy(
                  SSLContexts.createDefault(),
                  null, null, SSLBufferMode.STATIC,
                  HostnameVerificationPolicy.BUILTIN,
                  HttpsSupport.getDefaultHostnameVerifier()) {
              @Override
              void applyParameters(final SSLEngine sslEngine, final SSLParameters sslParameters, final String[] appProtocols) {
                  // No-op for test
             }
 
             @Override
             TlsDetails createTlsDetails(final SSLEngine sslEngine) {
                 return null;  // No-op for test
             }
         };
 
         // Test the verifySession method
         tlsStrategy.verifySession("localhost", mockSession, null);
 
     }
 
 
 }