Is it possible to put a condition to TestNG to run the test if that is member of two groups?

Question

I know you can define in your xml which groups that you want to run, but I want to know whether it is possible to say run these methods if they are both member of groups A &

Answer 1

You can create a listener implementing IMethodInterceptor interface. Which will give you an ability to access groups list from your @Test and manage your "tests to execute list" as you need. At same time ITestContext parameter allows you to access the data from testNg xml. So, you can set groups to run in default testNg manner (suite xml file); but run them depending on algorithm you implement. Something like:

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.testng.IMethodInstance;
import org.testng.IMethodInterceptor;
import org.testng.ITestContext;
import org.testng.annotations.Test;

public class Interceptor implements IMethodInterceptor
{

    @Override
    public List intercept(List methods, ITestContext context)
    {
        int methCount = methods.size();
        List result = new ArrayList();

        for (int i = 0; i < methCount; i++)
        {
            IMethodInstance instns = methods.get(i);
            List grps = Arrays.asList(instns.getMethod().getConstructorOrMethod().getMethod().getAnnotation(Test.class).groups());
//get these groups from testng.xml via context method parameter                         
            if (grps.contains("A") && grps.contains("B"))
            {
                result.add(instns);
            }                       
        }                       
        return result;
    }
}