1. Don't tell me how to answer questions when you ask me for an answer.
I'll tell you when your answer is logically inconsistent, as it was in this case.
2. We are being "tested" because of the original sin. (Adam and Eve). And the wages of sin is death. Jesus was put here to pay for the sins of humans. He is the only human (if you can call him fully human) to never have sinned. He is the son of God. God sacrificed his only son so that way not burn in hell for all the sins human commit. BUT, you must believe that he is the son of God and accept him as your Lord and Savior.
Why do we need to be tested at all? It's not for God's benefit - since he knows what the end result of the "test" will be. And it's not for our benefit, since regardless of what the "test" will be, our fate is sealed.
As for Original Sin, leave it up to the God of love and mercy to punish and hold generation after generation of people accountable for something two people did thousands of years ago. That's very loving and very merciful.
I won't even get into the fact that the concept of Original sin is a sham. A sin cannot happen without volition, and birth isn't something we choose. It's something that happens - no different than the sun rising.
3. I knew you'd say what you'd say in your last sentence which is why I explained it before. It is still free will. Since God is all knowing, it means exactly that, he's all knowing. He created everything. Obviously he's going to know the answer to everything, even before it happens. He is the Alpha and the Omega. That doesn't take away that you still have free will that he happens to know the answer to.
You can call it free will if you want, but that doesn't make it free will. If it's free will, you must be the one who decides and the outcome of your actions cannot be already fixed. A bit of friendly advice: Don't even bother trying to make this argument. People a lot smarter than you have tried, and failed. It's not even an argument, really.