How can i run multipe MS unit tests with different configurations

I have a unit test initializer:

[TestClass]
    public class TestMain
    {
        [AssemblyInitialize]
        public static void Init(TestContext context)
        {
            if (Game.LogIn("xxxxx@gmail.com", "xxxxxxx"))
            {
                //get all entities from db
            }
        }
    }

then, run test checks the integrity of the user entities. How can i run this tests with different parameters (login/password)?