how do I test the waters to see if I can come out?

To any parents that might read this: this is why you need to be clear that you would accept them, and be explicit. "I would still accept you and love you if you were gay or trans or queer"

Thing is, my father was clear that he would be accepting. Not Sir eif I can trust that tho. My mum not so much
- I guess what I mean to say then is that a parent should do everything they can to demonstrate that their child could really trust them in this. I totally get what you mean though, parents can often say one thing not actually expecting it to happen and then when it does get all huffy.
  
  To clarify further: many probably do think they've done this, but don't know that their child still feels like you do, OP. I would imagine because their actions and behaviors that you've observed doesn't align with his statements?

There’s no real way to know how they will react until you actually come out,not unless they’ve already made their position clear one way or another, and baiting them into such a discussion likely won’t produce the answers you seek.

They don't seem to be very bad. One of them is actually accepting. Its just religion is a big thing in the family. Is there any way to bait an answer?
- I'm not sure how religious they are, but it's better to be safe than sorry. If you are even remotely worried, I'd prepare the following secretly,
  
  a go bag with clothes, supplies and extra medication
  
  a friend you can spend the night with
  
  new passwords on your email, social media, laptops and phone. Encrypt your laptop and phone.
  
  new bank account your parents don't know about
  
  cash
  
  If possible, leave stuff like clothes and laptops at your friend's house.
  
  I may sound paranoid, but it's one of those situations where paranoid and wrong is better than the alternative. I've seen teens (relatives) get seriously fucked over this stuff.
  
  Parents who were seemingly open minded and rational installed spy software on their children's laptops and phone. Then they didn't allow them to go to college and they had to stay home until they "fixed their behavior". Denied access to money and jobs too.
- It depends a lot on the religion. A few are probably positive signs (but then you probably wouldn't be asking), many are real wildcards that are hard to generalize and some are strong negative signs.

I've seen some people try watching a show/movie/etc that has queer rep together with their parents, to see how they react? Like "oh hey, this show is getting really good reviews right now, want to watch it?" as if it's a total coincidence there's queer rep in it. But sometimes parents react completely differently when it's their own kid, in either direction, so it's maybe not that reliable.

The TV show approach worked well for me. It was a secondary character who wasn't strictly a token, and so it was easy to bring them up in conversation without asking hard questions directly. But I was always pretty sure my family was cool.

As others have noted, I don't think you can bait any relevant information from them. And this works both ways: some people are okay with homosexuality (or whatever) in the abstract but "don't think it could happen to them," if you catch my meaning; other people, love for their relatives overcomes homophobia.

Incidentally, this was part of why Pride became what it is: since it's easier to hate Someone Else than your own family, coming out en masse forces people to confront homosexuality as a tangible rather than abstract thing, in the context of people they love.

I don't have any particular advice for you. I can only say that I don't regret having come out.

I found this helpful when I was in your position

Could you frame a conversation with them as seeking advice about someone other than yourself? "One of my classmates is coming out and I want to support them, what do you recommend?"

Their reaction and advice could paint a pretty good picture without putting yourself in their crosshairs. Worst case, you can refuse to name the person and maybe get grounded for protecting someone imaginary.

But yea, that won't give you a complete answer to how they would react if their own child came out.