I understand your point, and I understand that it must have been difficult for you to go through such an experience. I genuinely appreciate your willingness to share this part of your life. However, I believe that testing a relationship doesn’t solve the difficulty of letting go. In fact, don’t you think it delays the decision even more? Because it adds another step to the process: the test, and then you have to wait for the results, evaluate, and decide. In any case, it seems like a dangerous recipe to me; you could easily get trapped in a manipulation game worthy of years of therapy. For example, let’s say you already have doubts about a relationship, you’d like to end it, but you’re finding it hard to let go. You decide to test the relationship and wait… but what if the other person has already noticed your insecurity about ending it and decides to give you exactly what you want to make the relationship last, not because they genuinely care about you, but because they deliberately want you within their asymmetrical system? And you, by waiting for the result of the test, are only giving them the opportunity to hurt you more.
Haha that‘s really deep tactical thinking
I tend to do that now and then as well.
I think only a few People are actually that smart in being manipulative.
I‘d say these are the Narcissists.
But most people who manipulate don‘t even realize it. It‘s their own normal, because they learned it this way. They run on Auto Pilot. Their subconscious dictates their whole life.
It‘s a tough topic. In the end it might be necessary for the one who is being manipulated to go through that and learn a valuable lesson.
Sometimes more than just once. Some People tend to repeat the same mistakes, because they don‘t learn.
So idk which way is the best.
Now, as someone who has learned to value themselves, I wouldn‘t need this test. I can see how someone acts when I‘m around and wether they really enjoy my company, or are trying to use me in some way.
I have acquired the mental Smarts, because I learned from my mistakes.
Everyone has their own way of doing things, and maybe this is just mine 
I‘m not perfect lol, and there is still some Trauma etc. That I‘m discovering, but I belive a critical threshold has been crossed already, where manipulations that used to work easily, now don‘t work at all.
You already have your answer, and I find it wonderfully insightful. An old habit has surfaced to fill a void in your system. Habits don’t disappear; rather, they are replaced by other habits. I hope you soon find a hobby that brings you joy and pleasure. But while you’re searching for this hobby, you can adopt the mind of an explorer and rejoice in the quest. There are as many possibilities out there as there are hobbies.
And one more thing:
I think you are misunderstanding the testing.
I‘m not talking about making some random stuff up like becoming bankrupt and then seeing if someone is still loyal to you.
It‘s about Things that you used to do for someone, because you felt it was necessary to be approved. After gaining some self respect, People don‘t want to keep doing things they don‘t like.
So you literally just stop doing that thing and see how the other person reacts.
That‘s the Test 
“Until you make your unconscious conscious, it will direct your life and you will call it fate.” - Carl Jung
Exactly
Let’s raise a glass to a world with fewer tests (we already had plenty of those in school).
That is the beauty of life and, at the same time, our great misfortune, because every problem has two sides: you can either let it overwhelm you or use it as a mechanism for growth. In my philosophy of life, it is best to face difficulties as soon as they arise.
Oh yeah that‘s a premium Philosophy.
There is now way to grow faster than to overcome a challenge.
It‘s such a great feeling to conquer ones own fears for example.
Yesterday I went climbing in a forest. It‘s with gear and safety etc.
But I still made a challenge to cross some platforms without using my hands for balance.
The Fear consumed me at first. My Legs literally shaking with Fear. But I took that first step and the Fear Factor went down by 50% in an instant
That‘s how powerful facing difficulties head on is
That’s right , I consider it a very useful method because you can apply it to all areas of life. Problems cause us stress and discomfort not only because of the situation itself, but also because we often lack confidence in our ability to overcome difficulties. Uncertainty is fertile ground where fear or hope can grow; we decide what to sow. Having hope and faith in both life and ourselves requires courage, and courage gives us the strength to face our fears and take that leap of faith, just like you did on the platforms.