there is a list of 6 possible countries there

With Israel as the most likely country that did the test with SA permission. It's very unlikely that the Soviet, Pakistan, India or France to do nuclear test there.

"most likely" is very bad evidence.

Just read the wiki entry man, it lists plenty of evidence that Israel did it. It's just Israel and SA wouldn't confirm it officially.

articles lists a lot of "conclusions made by people" and no evidence