We'll start simple. Get a large supply of water and a diuretic (such as soda, coffee, tea, or water tablets). Bring a towel and spare clothes. Go pee before you move on.

  This won't take me long
  I brought over 1 litre of drink, and a diuretic option
  I brought over 2 litres of drink and a diuretic option
  I didn't even bring a towel. Tons to drink though :P
  I'm not even going to try lmao

Simple as it goes: drink.

  250ml of drink, and wait 30 minutes
  500ml of drink, and wait 45 minutes
  1 litre of drink, and wait 75 minutes

We're going to get that water moving through you. Like air bending, but with... yanno.

  Walk around for 5 minutes
  Walk around for 10 minutes
  Walk around for 15 minutes, with a couple of sips of drink
  Already peeing :c

Phew. All that cleansing is thirsty work!

  Drink 250ml and wait 15 minutes, tapping your bladder occasionally
  Drink 500ml and wait 30 minutes, tapping your bladder occasionally
  Drink 500ml, wait 40 minutes, and push your bladder strongly with your hands every 10 minutes
  I peed during this :c

Whatever you passed the time with, you now need a break.

  Stretch vigorously, and walk about for 5 minutes
  Stretch vigorously, walk about for 10 minutes
  Stretch vigorously, walk about for 10 minutes, and tap on your bladder frequently
  Peeeeeeeing

Lustful thoughts cloud your mind

  Discreetly play with yourself for a few second, before realising it's WRONG!
  Play with yourself a little. Enough to get aroused, but not enough to go anywhere
  Watch a pornographic video for 5-10 minutes. But *don't* touch yourself.
  Peepee pants :E

Probably handwashing time again...

  Quick rinse in cold water
  Cold water, for 30 seconds, in whichever sink is NOT closest
  Cold water, for 60 seconds, in whichever sink is furthest from you. If people are nearby, wait until they aren't.
  PeEeEeEeEing

Water is getting boring, take a diuretic. Either a water tablet with some water, or something like tea, coffee, or soda.

  Small drink (up to 330ml), and wait 20 minutes
  Medium drink (up to 500ml), and wait 40 minutes
  Large drink (up to 1 litre), and wait 80 minutes
  Whichever option was initially tried, I dun peepee'd

Now for a real challenge.

  Find a table edge, or the back of a chair, or similar, and push your bladder into it for 20 seconds
  Rapidly push against your bladder (like you're pumping it), using alternating hands, for 40 seconds
  Have a conversation with someone (preferably by voice, preferably in-person)
  Psssssssss is the sound inside my pants right now

You're taking the bus to somewhere. You can choose the route, but you must also drink. You may not leave your seat. You cannot hold yourself.

  250ml of drink, and travel for 20 minutes
  500ml of drink, and travel for 30 minutes
  500ml of drink, and travel for 60 minutes
  Should have brought adult diapers... (or did I...?)

Check your bladder bulge in the mirror, if you have either.

  A quick observation. Long enough to take a photo.
  A good look from multiple angles. Pressing the bladder to check its fullness.
  Pushing the bladder against the mirror, as though hugging the reflection for more than 20 seconds.
  My reflection is making a puddle

I'm sure your urges are getting to you now. Let's make it "easier".

  Stand at the toilet for a few seconds, but don't use it. Flush it and wash your hands when done.
  As above, but let out a short 2-3 second spurt while standing there. The pee goes wherever you like.
  Oh god, wetting myself! At least it's in the bathroom!

Take another diuretic.

  Small drink (up to 330ml), and wait 20 minutes
  Medium drink (up to 500ml), and wait 40 minutes
  Large drink (up to 1 litre), and wait 80 minutes
  I cant take this any more (peeee tiiiime)

Story time. Imagine you are Sammy. Sammy woke up this morning, with a very full bladder. Sammy went over to the bathroom, but found the toilet was broken. Sammy was concerned, but knew there was a public toilet nearby. Sammy got dressed, taking care not to stress their bladder, took a refreshing drink of water to cleanse their mouth from the night, and set off.

As Sammy walked, their bladder pulsated with each step. The weather was as a cool summer's morning. But the air was dry. On the way to the toilet, located in the local park, Sammy passed a water fountain. Knowing the toilet was nearby, Sammy risked a drink. A few minutes later, Sammy reached the toilets, but found them locked.

Though the day was pleasant, and Sammy would have loved to water some plants here, the space was too open to pubic view. So Sammy walked on, looking for someplace to pee.

Sammy passed over a rushing river, through breezy walkways, and past many people enjoying the day. All the while, Sammy's bladder pulsed, and ached, and pushed against their waistband.

  Oof, I can relate. Not peeing yet, but can relate.
  If I was Sammy, I'd just slowly wet myself and have it dry off in this weather. Like I did in my pants just now. (lose)

Congrats on getting this far, if you did. As a treat, go watch a video about peeing. Any sort, but it must involve peeing.

  Video was under 5 minutes
  Video was 5-10 minutes
  Video was 10-15 minutes
  Peed while trying to watch

Return trip on the bus. It's two ways, my friend. You must make the same choice as last time. If it causes you to pee before the trip is over - too bad!

Remember: Don't leave your seat, and don't hold yourself.

  250ml of drink, and travel for 20 minutes
  500ml of drink, and travel for 30 minutes
  500ml of drink, and travel for 60 minutes
  Should have brought adult diapers... (or did I...?)

Time for a stretch, and a walkabouts

  Stretch vigorously, and walk about for 5 minutes
  Stretch vigorously, walk about for 10 minutes
  Stretch vigorously, walk about for 10 minutes, and tap on your bladder frequently
  Peeeeeeeing

Time for another toilet break ;)

  Stand at the toilet for a few seconds, but don't use it. Flush it and wash your hands when done.
  As above, but let out a short 2-3 second spurt while standing there. The pee goes wherever you like.
  Oh god, wetting myself! At least it's in the bathroom!

Technically this only counts as the second challenge

  Find a table edge, or the back of a chair, or similar, and push your bladder into it for 30 seconds
  Rapidly push against your bladder (like you're pumping it), using alternating hands, for 60 seconds
  Have a conversation with someone (preferably by voice, preferably in-person)
  I peed during this :c

Well done! You've made it to the last question. Be sure to read all of this. Out loud, if it helps to concentrate.

By now you will have answered many, if not all the questions above. On each question, the last option was in case you did a wee during the question. For each question after you lost control, respond as though you peed in THAT question. This will give you an accurate score.

If you had a stronger bladder, you will have lost control much later. And for that I congratulate you. If you got ambitious, and took the harder challenges (which were usually the later options), you will have a higher score even for the same number of questions completed.

If you made it this far without peeing, you have my permission to pee. Or to go over the test again, until you do wet yourself. We'll call that a "prestige run".

No matter your result, you can always try again later. Try to reach higher questions, and/or try to complete the harder challenges. Improve your score, and have fun!

  I wet myself early lol (does not affect your score)
  I wet myself in later questions, but still... (does not affect your score)
  I haven't wet myself, but will definitely go peepee now! (does not affect your score)
  I haven't wet myself, but may try a prestige run (does not affect your score)
  I've done all the hardest challenges, and still haven't wet myself. Make a harder test! (does not affect your score)