问要在独木舟中使用TestModules获得最佳输出，应遵循哪种正确的代码结构？

EN

void MainTest()
{
TestModuleTitle ("ECU DIAGNOSTICS TEST");
TestModuleDescription ("Basic Diagnostics Test");

TestGroupBegin("ECU Extended session", "ReadPartNubmers");
ExtendedDiagnosticSession_Start();
//testcase 
//testcase 
//...
//testcase n
TestGroupEnd();

TestGroupBegin("ECU Identification", "ReadPartNubmers");
ReadSerialPartNumber();
//testcase eg  ReadSerialPartNumber()... 
//testcase 
//...
//testcase 
TestGroupEnd();  
}

testcase  ReadSerialPartNumber()
{
diagRequest ABS_ESP.Serial_Number_Read req; //Service from CDD

TestCaseTitle("TEST 1 ReadPartNumber", "Read Serial Part Number");

diagSendRequest(req);

if (TestWaitForDiagResponse(req, 2000)== 1)
{
  testReportWriteDiagResponse(req);

  if(DiagGetLastResponseCode(req) == -1) // Positive response
  {
    byte DataBuffer[50];

    diagGetRespParameterRaw(req,"SerialNumber",DataBuffer,20);// get data from response

      if(DataBuffer[0] == 0xAA)//dummy response verification
      {
         TestStepPass("Serial Number is correct");
      }
      else
      {
         TestStepFail("Wrong Part number ");
      }
  }
  else if(DiagGetLastResponseCode(req) > 0)//Negative response 
  {
    TestStepFail("Negative response received");
  }

}
else
{
  TestStepFail("No answer from ECU!");
}
}

testcase ExtendedDiagnosticSession_Start()
{
  diagRequest ABS_ESP.ExtendedDiagnosticSession_Start req; //Service from CDD, 

 TestCaseTitle("Test no 1", "Set Extended session");

diagSendRequest(req);

if (TestWaitForDiagResponse(req, 2000)== 1)
{
  testReportWriteDiagResponse(req);

  if(DiagGetLastResponseCode(req) == -1) // Positive response
  {

   TestStepPass("Positive");

  }
  else if(DiagGetLastResponseCode(req) > 0)//Negative response 
  {

    TestStepFail("ExtendedDiagnosticSession","Negative response received");
  }

}
else
{
  TestStepFail("ExtendedDiagnosticSession","No answer from ECU!");
}

}