Albert Adomah says was delighted to leave Villa Park with a win on Saturday after another pre-season work out.
Boro were trailing 1-0 at the break to Aston Villa at the weekend, but a spirted second half comeback saw Aitor Karanka's side flip the score on its head to win 3-1.
"This was a test for us playing a team like Aston Villa," said Adomah. "That's the whole plan for the manager - to test the players and obviously it worked out for us to win, it's a good feeling.
"They've got a new manager so some of the players will be working to impress him and it showed - they've still got that Premier League class.
"They played well but unfortunately for them we turned up and showed our class, so hopefully we can keep that up.
"They are pre-season games but you still want to win and have that feel-good factor.
"If you lose then you're disappointed and yes you can get over it, but winning builds up your confidence and momentum going into the Premier League season."
Alvaro Negredo made his first appearance on English soil for Boro, making it with a goal - his second in two starts - and Adomah believes the new signings are starting to take shape in Karanka's squad.
"When you sign players you have to get time in with them training and in games which we're doing," he said.
"For the players it helps them getting to know their teammates and Saturday showed we're linking up.
"Like George [Friend] and Viktor [Fischer]. Then there's obviously Emilo [Nsue] and me who have been together for a long time now.
"There are things we need to work on but it will work out for the best gradually."