The game is scheduled to be held on June 4th. The complete schedule of the tournament will be announced on the 30th of this month.
South Africa will play three Test matches against Pakistan and two against Sri Lanka during their 2018/19.
Sri Lanka lost all three Test when the visit South Africa in 2016-17.
Cricket South Africa confirmed a two-Test tour of Sri Lanka In July along with five One-Day Internationals and a T20I on Wednesday.
Sundar also make big gains in latest ICC T20I rankings after declared Man of the series in the Nidahas Trophy.
Bangladesh beat Sri Lanka by 2 wickets and sets up final clash with India on Sunday.
