content: /**
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.
   */
  
  package org.apache.atlas.utils;
  
  import org.apache.commons.configuration.Configuration;
  import org.apache.commons.configuration.PropertiesConfiguration;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.security.alias.CredentialProvider;
  import org.apache.hadoop.security.alias.CredentialProviderFactory;
  import org.apache.hadoop.security.alias.JavaKeyStoreProvider;
  import org.apache.kafka.common.config.SaslConfigs;
  import org.apache.kafka.common.config.types.Password;
  import org.apache.kafka.common.security.JaasContext;
  import org.mockito.MockedStatic;
  import org.mockito.Mockito;
  import org.testng.annotations.Test;
  
  import java.io.IOException;
  import java.nio.file.Files;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Properties;
  
  import static org.testng.Assert.assertNull;
  import static org.testng.Assert.assertTrue;
  import static org.testng.Assert.fail;
  
  public class KafkaUtilsTest {
      protected static final String JAAS_MASKED_PASSWORD = "keypass";
  
      protected Path   jksPath;
      protected String providerUrl;
  
      @Test
      public void testSetKafkaJAASPropertiesForAllProperValues() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleName        = "com.sun.security.auth.module.Krb5LoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "true";
          final String optionServiceName      = "kafka";
  
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
  
          KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
          String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
          assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
          assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
          assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
          assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
          assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
          assertJaaSConfigLoadable(newPropertyValue);
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForMissingControlFlag() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleName        = "com.sun.security.auth.module.Krb5LoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "true";
          final String optionServiceName      = "kafka";
  
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
  
          KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
          String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
          assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
          assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
          assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
          assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
          assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
          assertJaaSConfigLoadable(newPropertyValue);
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForMissingLoginModuleName() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "true";
          final String optionServiceName      = "kafka";
  
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
  
          KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
          String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
          assertNull(newPropertyValue);
      }
  
      @Test
      public void testSetKafkaJAASPropertiesWithSpecialCharacters() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleName        = "com.sun.security.auth.module.Krb5LoginModule";
          final String loginModuleControlFlag = "required";
          final String optionKeyTabPath       = "/path/to/file.keytab";
          final String optionPrincipal        = "test/_HOST@EXAMPLE.COM";
  
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.keyTabPath", optionKeyTabPath);
          configuration.setProperty("atlas.jaas.KafkaClient.option.principal", optionPrincipal);
  
          try {
              KafkaUtils.setKafkaJAASProperties(configuration, properties);
              String newPropertyValue      = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
              String updatedPrincipalValue = org.apache.hadoop.security.SecurityUtil.getServerPrincipal(optionPrincipal, (String) null);
  
              assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
              assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
              assertTrue(newPropertyValue.contains("keyTabPath=\"" + optionKeyTabPath + "\""));
              assertTrue(newPropertyValue.contains("principal=\"" + updatedPrincipalValue + "\""));
              assertJaaSConfigLoadable(newPropertyValue);
          } catch (IOException e) {
              fail("Failed while getting updated principal value with exception : " + e.getMessage());
          }
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForTicketBasedLoginConfig() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleName        = "com.sun.security.auth.module.Krb5LoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "true";
          final String optionServiceName      = "kafka";
  
          configuration.setProperty("atlas.kafka.bootstrap.servers", "localhost:9100");
          configuration.setProperty("atlas.jaas.ticketBased-KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.ticketBased-KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.ticketBased-KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.ticketBased-KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.ticketBased-KafkaClient.option.serviceName", optionServiceName);
  
          try (MockedStatic<KafkaUtils> mockedKafkaUtilsClass = Mockito.mockStatic(KafkaUtils.class)) {
              mockedKafkaUtilsClass.when(KafkaUtils::isLoginKeytabBased).thenReturn(false);
              mockedKafkaUtilsClass.when(KafkaUtils::isLoginTicketBased).thenReturn(true);
              mockedKafkaUtilsClass.when(() -> KafkaUtils.surroundWithQuotes(Mockito.anyString())).thenCallRealMethod();
              mockedKafkaUtilsClass.when(() -> KafkaUtils.setKafkaJAASProperties(configuration, properties)).thenCallRealMethod();
  
              KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
              String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
              assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
              assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
              assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
              assertJaaSConfigLoadable(newPropertyValue);
          }
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForTicketBasedLoginFallback() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleName        = "com.sun.security.auth.module.Krb5LoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "true";
          final String optionServiceName      = "kafka";
  
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
  
          try (MockedStatic<KafkaUtils> mockedKafkaUtilsClass = Mockito.mockStatic(KafkaUtils.class)) {
              mockedKafkaUtilsClass.when(KafkaUtils::isLoginKeytabBased).thenReturn(false);
              mockedKafkaUtilsClass.when(KafkaUtils::isLoginTicketBased).thenReturn(true);
              mockedKafkaUtilsClass.when(() -> KafkaUtils.surroundWithQuotes(Mockito.anyString())).thenCallRealMethod();
              mockedKafkaUtilsClass.when(() -> KafkaUtils.setKafkaJAASProperties(configuration, properties)).thenCallRealMethod();
  
              KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
              String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
              assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
              assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
              assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
              assertJaaSConfigLoadable(newPropertyValue);
          }
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForTokenAuthConfig() {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          final String loginModuleName        = "org.apache.kafka.common.security.scram.ScramLoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "false";
          final String optionServiceName      = "kafka";
          final String optionTokenAuth        = "true";
          final String optionUsername         = "30CQ4q1hQMy0dB6X0eXfxQ";
          final String optionPassword         = "KdaUQ4FlKWlDxwQrAeFGUVbb6sR0P+zoqOZDZjtIRP1wseXbSbhiTjz3QI9Ur9o4LTYZSv8TE1QqUC4FSwnoTA==";
  
          configuration.setProperty("atlas.kafka.bootstrap.servers", "localhost:9100");
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
          configuration.setProperty("atlas.jaas.KafkaClient.option.tokenauth", optionTokenAuth);
          configuration.setProperty("atlas.jaas.KafkaClient.option.username", optionUsername);
          configuration.setProperty("atlas.jaas.KafkaClient.option.password", optionPassword);
  
          try (MockedStatic<KafkaUtils> mockedKafkaUtilsClass = Mockito.mockStatic(KafkaUtils.class)) {
              mockedKafkaUtilsClass.when(() -> KafkaUtils.surroundWithQuotes(Mockito.anyString())).thenCallRealMethod();
              mockedKafkaUtilsClass.when(() -> KafkaUtils.setKafkaJAASProperties(configuration, properties)).thenCallRealMethod();
  
              KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
              String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
              assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
              assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
              assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("tokenauth=\"" + optionTokenAuth + "\""), "tokenauth not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("username=\"" + optionUsername + "\""), "username not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("password=\"" + optionPassword + "\""), "password not present in new property or value doesn't match");
              assertJaaSConfigLoadable(newPropertyValue);
          }
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForClearTextPassword() throws Exception {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          setupCredentials();
  
          final String loginModuleName        = "org.apache.kafka.common.security.scram.ScramLoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "false";
          final String optionServiceName      = "kafka";
          final String optionTokenAuth        = "true";
          final String optionUsername         = "30CQ4q1hQMy0dB6X0eXfxQ";
          final String optionPassword         = "admin123";
  
          configuration.setProperty("atlas.kafka.bootstrap.servers", "localhost:9100");
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
          configuration.setProperty("atlas.jaas.KafkaClient.option.tokenauth", optionTokenAuth);
          configuration.setProperty("atlas.jaas.KafkaClient.option.username", optionUsername);
          configuration.setProperty("atlas.jaas.KafkaClient.option.password", optionPassword);
          configuration.setProperty("hadoop.security.credential.provider.path", providerUrl);
  
          try (MockedStatic<KafkaUtils> mockedKafkaUtilsClass = Mockito.mockStatic(KafkaUtils.class)) {
              mockedKafkaUtilsClass.when(() -> KafkaUtils.surroundWithQuotes(Mockito.anyString())).thenCallRealMethod();
              mockedKafkaUtilsClass.when(() -> KafkaUtils.setKafkaJAASProperties(configuration, properties)).thenCallRealMethod();
  
              KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
              String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
              assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
              assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
              assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("tokenauth=\"" + optionTokenAuth + "\""), "tokenauth not pres////.ent in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("username=\"" + optionUsername + "\""), "username not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("password=\"" + optionPassword + "\""), "password not present in new property or value doesn't match");
              assertJaaSConfigLoadable(newPropertyValue);
          }
      }
  
      @Test
      public void testSetKafkaJAASPropertiesForPasswordEncryption() throws Exception {
          Properties    properties    = new Properties();
          Configuration configuration = new PropertiesConfiguration();
  
          setupCredentials();
  
          final String loginModuleName        = "org.apache.kafka.common.security.scram.ScramLoginModule";
          final String loginModuleControlFlag = "required";
          final String optionUseKeyTab        = "false";
          final String optionStoreKey         = "false";
          final String optionServiceName      = "kafka";
          final String optionTokenAuth        = "true";
          final String optionUsername         = "30CQ4q1hQMy0dB6X0eXfxQ";
          final String optionPassword         = "********";
  
          configuration.setProperty("atlas.kafka.bootstrap.servers", "localhost:9100");
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleName", loginModuleName);
          configuration.setProperty("atlas.jaas.KafkaClient.loginModuleControlFlag", loginModuleControlFlag);
          configuration.setProperty("atlas.jaas.KafkaClient.option.useKeyTab", optionUseKeyTab);
          configuration.setProperty("atlas.jaas.KafkaClient.option.storeKey", optionStoreKey);
          configuration.setProperty("atlas.jaas.KafkaClient.option.serviceName", optionServiceName);
          configuration.setProperty("atlas.jaas.KafkaClient.option.tokenauth", optionTokenAuth);
          configuration.setProperty("atlas.jaas.KafkaClient.option.username", optionUsername);
          configuration.setProperty("atlas.jaas.KafkaClient.option.password", optionPassword);
          configuration.setProperty("hadoop.security.credential.provider.path", providerUrl);
  
          try (MockedStatic<KafkaUtils> mockedKafkaUtilsClass = Mockito.mockStatic(KafkaUtils.class)) {
              mockedKafkaUtilsClass.when(() -> KafkaUtils.surroundWithQuotes(Mockito.anyString())).thenCallRealMethod();
              mockedKafkaUtilsClass.when(() -> KafkaUtils.setKafkaJAASProperties(configuration, properties)).thenCallRealMethod();
  
              KafkaUtils.setKafkaJAASProperties(configuration, properties);
  
              String newPropertyValue = properties.getProperty(KafkaUtils.KAFKA_SASL_JAAS_CONFIG_PROPERTY);
  
              assertTrue(newPropertyValue.contains(loginModuleName), "loginModuleName not present in new property");
              assertTrue(newPropertyValue.contains(loginModuleControlFlag), "loginModuleControlFlag not present in new property");
              assertTrue(newPropertyValue.contains("useKeyTab=\"" + optionUseKeyTab + "\""), "useKeyTab not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("storeKey=\"" + optionStoreKey + "\""), "storeKey not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("serviceName=\"" + optionServiceName + "\""), "serviceName not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("tokenauth=\"" + optionTokenAuth + "\""), "tokenauth not pres////.ent in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("username=\"" + optionUsername + "\""), "username not present in new property or value doesn't match");
              assertTrue(newPropertyValue.contains("password=\"" + JAAS_MASKED_PASSWORD + "\""), "password not present in new property or value doesn't match");
              assertJaaSConfigLoadable(newPropertyValue);
          }
      }
  
      protected void setupCredentials() throws Exception {
          jksPath     = new Path(Files.createTempDirectory("tempproviders").toString(), "kafka.jceks");
          providerUrl = JavaKeyStoreProvider.SCHEME_NAME + "://file/" + jksPath.toUri();
  
          org.apache.hadoop.conf.Configuration conf = new org.apache.hadoop.conf.Configuration(false);
  
          conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, providerUrl);
  
          CredentialProvider provider = CredentialProviderFactory.getProviders(conf).get(0);
  
          // create new aliases
          try {
              provider.createCredentialEntry("atlas.jaas.KafkaClient.option.password", JAAS_MASKED_PASSWORD.toCharArray());
  
              // write out so that it can be found in checks
              provider.flush();
          } catch (Exception e) {
              e.printStackTrace();
              throw e;
          }
      }
  
      private void assertJaaSConfigLoadable(String jaasConfig) {
          // Ensure that JaaS config can be loaded
          Map<String, Password> jaasConfigs = new HashMap<>();
  
          jaasConfigs.put(SaslConfigs.SASL_JAAS_CONFIG, new Password(jaasConfig));
  
          try {
              JaasContext.loadClientContext(jaasConfigs);
          } catch (IllegalArgumentException e) {
              fail(String.format("JaaS config '%s' can not be loaded", jaasConfig), e);
          }
      }
  }
  