If everything has a purpose then evil doesn't exist

[Mister Agenda]

Why does there have to be a test condition at all? God already knows who is going on a drug rampage and who is going to become a philanthropist. What is the point of killing children with cancer when the outcome is already known? 

Applauding the slow, painful death of children as an opportunity for their parents to serve God makes you a monster. You need to know this.

Boru

In order for God to be "fair and just" like he calls himself; such scenarios must exist and happen.
God knows the conclusion, but the drug dealer doesn't yet know the conclusion.

No. I'm not a monster. I have M.S that cripples me from driving or even having fun with friends. I'm tortured every moment by symptoms of M.S and by seeing people forgetting me and forgetting who I was. Damn sometimes I feel like a ghost.

Back to the topic:
It's all a test to see what we shall do when faced with disasters. It's like God is seeing our response to these disasters, then judge us each with their deed.

I think our point is that the child with cancer in your scenario is just a means to the end of testting their parents. In your scenario, the baby was born and got cancer in order to be a test for its parents. The idea is unconscionable.