I am trying to test my IAPs. It seems to not work for me. WHY!!!
Unfortunately that is not possible. IAP purchases require communication with Apple's servers that is not possible without compiling a game.
You can fake it to some extent by having keycommands to "simulate" responses from Apple, but it'll never be a perfect test.
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You need to push a build to TestFlight and test it that way when testing IAPs. You can also use an ad hoc and a testing account, but I recommend TestFlight and a real account for the more reliable results.
I want to test the results in GameSalad Viewer so I can make quick adjustments to them in my application.