### Question:
RangerNiFiAuthorizer implements Authorizer, AuthorizationAuditor { @Override public void onConfigured(AuthorizerConfigurationContext configurationContext) throws AuthorizerCreationException { try { if (nifiPlugin == null) { logger.info("RangerNiFiAuthorizer(): initializing base plugin"); final PropertyValue securityConfigValue = configurationContext.getProperty(RANGER_SECURITY_PATH_PROP); addRequiredResource(RANGER_SECURITY_PATH_PROP, securityConfigValue); final PropertyValue auditConfigValue = configurationContext.getProperty(RANGER_AUDIT_PATH_PROP); addRequiredResource(RANGER_AUDIT_PATH_PROP, auditConfigValue); final String rangerKerberosEnabledValue = getConfigValue(configurationContext, RANGER_KERBEROS_ENABLED_PROP, Boolean.FALSE.toString()); rangerKerberosEnabled = rangerKerberosEnabledValue.equals(Boolean.TRUE.toString()) ? true : false; if (rangerKerberosEnabled) { final Configuration securityConf = new Configuration(); securityConf.set(HADOOP_SECURITY_AUTHENTICATION, KERBEROS_AUTHENTICATION); UserGroupInformation.setConfiguration(securityConf); final String nifiPrincipal = nifiProperties.getKerberosServicePrincipal(); final String nifiKeytab = nifiProperties.getKerberosServiceKeytabLocation(); if (StringUtils.isBlank(nifiPrincipal) || StringUtils.isBlank(nifiKeytab)) { throw new AuthorizerCreationException("Principal and Keytab must be provided when Kerberos is enabled"); } UserGroupInformation.loginUserFromKeytab(nifiPrincipal.trim(), nifiKeytab.trim()); } final String serviceType = getConfigValue(configurationContext, RANGER_SERVICE_TYPE_PROP, DEFAULT_SERVICE_TYPE); final String appId = getConfigValue(configurationContext, RANGER_APP_ID_PROP, DEFAULT_APP_ID); nifiPlugin = createRangerBasePlugin(serviceType, appId); nifiPlugin.init(); defaultAuditHandler = new RangerDefaultAuditHandler(); rangerAdminIdentity = getConfigValue(configurationContext, RANGER_ADMIN_IDENTITY_PROP, null); } else { logger.info("RangerNiFiAuthorizer(): base plugin already initialized"); } } catch (Throwable t) { throw new AuthorizerCreationException("Error creating RangerBasePlugin", t); } }  @Override void initialize(AuthorizerInitializationContext initializationContext); @Override void onConfigured(AuthorizerConfigurationContext configurationContext); @Override AuthorizationResult authorize(final AuthorizationRequest request); @Override void auditAccessAttempt(final AuthorizationRequest request, final AuthorizationResult result); @Override void preDestruction(); @AuthorizerContext void setNiFiProperties(final NiFiProperties properties);  }### Answer:
@Test public void testOnConfigured() { verify(rangerBasePlugin, times(1)).init(); assertEquals(appId, authorizer.mockRangerBasePlugin.getAppId()); assertEquals(serviceType, authorizer.mockRangerBasePlugin.getServiceType()); }