Tests between these countries are not a s frequent as one may think, even after you consider that they started playing in early 1992. In fact, the West Indies were the first to host the returning SA team in a Test. (India was the first to host them in an ODI series in 1991).
Only 28 Tests have been played between these sides before now. Two Tests are scheduled, both at the Darren Sammy Stadium at Gros Islet on St Lucia. They are scheduled for Jun 10-14 and Jun 18-22. As I write, the series has got off to a fiery start with WI 97 and SA 128/4.
Of the 28 Tests, WI have won 3 and SA 18 with 7 drawn.
In WI, the 13 Tests have SA leading 6-2 with 5 draws
In SA, the 15 Tests have SA leading 12-1 with 2 draws.
The only 3 tests WI have won are the inaugural one at Bridgetown in 1991-92, at Kingston in 2000-01 and at Port Elizabeth in 2007-08. SA recorded a 5-0 sweep in 1998-99
A quick overview of statistics:
Most runs: 2356 by Kallis, 1715 by Lara.
Most centuries: 8 by Kallis, 7 by GC Smith. Most by WI: 5 by Chanderpaul.
Most 50+ scores: 20 by Kallis, 13 by Chanderpaul and Lara.
Highest scores: 317 by Gayle in 2005, 213 by WW Hinds also in 2005.
By SA: 208 by Amla in 2014-15. By SA in WI: 178 by AB de Villiers in 2005.
Highest batting averages (Minimum 20 innings):
84.18 by AB de Villiers. For WI 49.00 by Lara.
Highest strike rates (Minimum 1000 balls faced):
60.21 by Gayle, for SA 59.17 by GC Smith.
Most wickets: 70 by Pollock. For WI, 51 by Walsh.
Best innings bowling: 7-37 by Ntini in 2005
For WI: 7-84 by FA Rose in 1998-99
Best match bowling: 13-132 by Ntini in 2005 and 10-88 by Nel in 2005. These are the only 10-fors in these Tests.
For WI: 8-79 by Ambrose in 1998-99.
Most dismissals: 77 by Boucher, for WI 51 by Jacobs.
Most by a non-keeper: 33 by Kallis
Highest dismissal rate (Minimum 20 innings fielded): 1.89 by Jacobs.
For a non-keeper 0.95 by Cullinan.
Kallis 2356 runs and 52 wickets
Pollock 551 runs and 70 wickets.
In a match: Kallis 110 and 88* besides 7-124 in 1998-99.