The problem with looking at your situation as a test of who God is, is that we lack the wisdom and the perspective to see what God has for our lives. What may to us appear simply as a broken relationship, cancer, or the death of a loved one, although painful, is not purposeless.
"The unpopular truth of the Gospel message is that joy is always connected to suffering of some kind."
The unpopular truth of the Gospel message is that joy is always connected to suffering of some kind. The old saying, "The safest place to be is in the center of God's will," is not only ridiculous, it's downright dangerous. What that statement supposes is that God cares more about our comfort than he does our becoming whole and restored.
While a bit absurd, take a hot rod for example: If any old classic car could feel, you would be quick to hear that it's restoration caused a great deal of pain. Stripping away what has rotted and rusted is not an easy process, but that doesn't mean the Restorer isn't good.
I can't trust Christians that haven't endured pain and walked through dark hours in their journey with Christ. Hebrews 4:14-16 gives me the reason I can trust Christ; He endured much and now knows our afflictions and troubles well as our sympathetic High Priest.