First Test: Australia v South Africa
Venue: Perth Dates: 17-21 December Start time: 0230 GMT
Coverage: Scorecard and reports on BBC Sport website. Live on Sky Sports
Harris staked his claim for a Test berth with four wickets in Perth
Paul Harris took four wickets for South Africa as they restricted Western Australia to 280 all out on the final day of their two-day warm-up match.
The spinner boosted his Test chances with 4-94 at the Waca, while there were two wickets apiece for Dale Steyn and Lonwabo Tsotsobe in the drawn match.
AB de Villiers enjoyed his batting practice on day one in Perth, compiling 129 before retiring.
Hashim Amla was unbeaten on 59 when South Africa declared at 320-8.
"We should have a totally fit squad available for selection," said South Africa captain Graeme Smith after the game.
He also indicated he would prefer to include spinner Harris in the side rather than an additional seamer.