Program: 114852
Project: 114852
Buggy source:
@BeforeClass(alwaysRun=true) public void setEnvironment() throws Exception {
  super.init();
  apiProvider=publisherContext.getSuperTenant().getContextUser().getUserName();
  String gatewaySessionCookie=createSession(gatewayContextMgt);
  String carbonHome=System.getProperty(ServerConstants.CARBON_HOME);
  String artifactsLocation=TestConfigurationProvider.getResourceLocation() + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator;
  String apimConfigArtifactLocation=artifactsLocation + APIM_CONFIG_XML;
  String apimRepositoryConfigLocation=carbonHome + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ APIM_CONFIG_XML;
  String masterDatasourceLocation=artifactsLocation + DATASOURCE_XML;
  String masterDatasourceConfigLocation=carbonHome + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ DATASOURCE_XML;
  File apimConfSourceFile=new File(apimConfigArtifactLocation);
  File apimConfTargetFile=new File(apimRepositoryConfigLocation);
  File dsConfSourceFile=new File(masterDatasourceLocation);
  File dsConfTargetFile=new File(masterDatasourceConfigLocation);
  serverManager=new ServerConfigurationManager(gatewayContextMgt);
  loadSynapseConfigurationFromClasspath("String_Node_Str" + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str",gatewayContextMgt,gatewaySessionCookie);
  serverManager.applyConfigurationWithoutRestart(apimConfSourceFile,apimConfTargetFile,true);
  log.info("String_Node_Str" + apimConfigArtifactLocation + "String_Node_Str"+ apimRepositoryConfigLocation);
  serverManager.applyConfigurationWithoutRestart(dsConfSourceFile,dsConfTargetFile,true);
  log.info("String_Node_Str" + masterDatasourceLocation + "String_Node_Str"+ masterDatasourceConfigLocation);
  serverManager.restartGracefully();
  String publisherURLHttp=publisherUrls.getWebAppURLHttp();
  apiPublisher=new APIPublisherRestClient(publisherURLHttp);
}

Fixed version (ground truth):
@BeforeClass(alwaysRun=true) public void setEnvironment() throws Exception {
  super.init();
  apiProvider=publisherContext.getSuperTenant().getContextUser().getUserName();
  String gatewaySessionCookie=createSession(gatewayContextMgt);
  String carbonHome=System.getProperty(ServerConstants.CARBON_HOME);
  String artifactsLocation=TestConfigurationProvider.getResourceLocation() + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator;
  String apimConfigArtifactLocation=artifactsLocation + APIM_CONFIG_XML;
  String apimRepositoryConfigLocation=carbonHome + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ APIM_CONFIG_XML;
  String masterDatasourceLocation=artifactsLocation + DATASOURCE_XML;
  String masterDatasourceConfigLocation=carbonHome + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ DATASOURCE_XML;
  File apimConfSourceFile=new File(apimConfigArtifactLocation);
  File apimConfTargetFile=new File(apimRepositoryConfigLocation);
  File dsConfSourceFile=new File(masterDatasourceLocation);
  File dsConfTargetFile=new File(masterDatasourceConfigLocation);
  serverManager=new ServerConfigurationManager(gatewayContextMgt);
  loadSynapseConfigurationFromClasspath("String_Node_Str" + File.separator + "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str"+ File.separator+ "String_Node_Str",gatewayContextMgt,gatewaySessionCookie);
  serverManager.applyConfigurationWithoutRestart(apimConfSourceFile,apimConfTargetFile,true);
  log.info("String_Node_Str" + apimConfigArtifactLocation + "String_Node_Str"+ apimRepositoryConfigLocation);
  serverManager.applyConfigurationWithoutRestart(dsConfSourceFile,dsConfTargetFile,true);
  log.info("String_Node_Str" + masterDatasourceLocation + "String_Node_Str"+ masterDatasourceConfigLocation);
  serverManager.restartGracefully();
  super.init();
  String publisherURLHttp=publisherUrls.getWebAppURLHttp();
  apiPublisher=new APIPublisherRestClient(publisherURLHttp);
}