[TestMethod]
public void TestConnectionCopyPastedFromAtlas36Style()
{
    string conn = "mongodb+srv://xxx:xxx@m10-dev-dgtt4.mongodb.net/test?retryWrites=true&w=majority&serverSelectionTimeoutMS=5000";
    
    var client = new MongoClient(conn);
    var database = client.GetDatabase("test");
    database.RunCommandAsync((Command<BsonDocument>)"{ping:1}").Wait();
}

[TestMethod]
public void TestConnectionCopyPastedFromAtlas34Style()
{    
    string conn = "mongodb://xxx:xxx@m10-dev-shard-00-00-dgtt4.mongodb.net:27017,m10-dev-shard-00-01-dgtt4.mongodb.net:27017,m10-dev-shard-00-02-dgtt4.mongodb.net:27017/test?ssl=true&replicaSet=m10-dev-shard-0&authSource=admin&retryWrites=true&w=majority";
    
    var client = new MongoClient(conn);
    var database = client.GetDatabase("test");
    database.RunCommandAsync((Command<BsonDocument>)"{ping:1}").Wait();
}