Also why The Wall blocks your way has no full stop but You do not have a ship to cross this sea.

Almost seven hundred feet high it stood, three times the height of the tallest tower in the stronghold it sheltered. His uncle said the top was wide enough for a dozen armored knights to ride abreast. The gaunt outlines of huge catapults and monstrous wooden cranes stood sentry up there, like the skeletons of great birds, and among them walked men in black as small as ants.

-Jon Snow's first impression of the Wall

Jon Snow glanced up at the Wall, towering over them like a cliff of ice. A hundred leagues from end to end, and seven hundred feet high. The strength of the Wall was its height; the length of the Wall was its weakness.

-thoughts of Jon Snow

Nice kata, but I wonder why considering the wall only on the north side.

done.

This is not resolved.

You're relying on randomness to get you off the map. If all numbers generated are too small, the test won't work.

Add a fixed test.

Done. I created another group of random tests that include directions with higher numbers
Thanks so much for all your help!

Simple. Add a fixed test with something like "N10 S10", and check that you're running into the wall, and do not get back to where you started.

I just realised my solution breaks for distances over single digits.

locales was. But you cured that fly by shooting it (with a cannon).

( I think it should have been a constant but was actually a variable BTW. )

Ah I see. I'll have to figure out a way to test for that.

I wasn't sure what users could see. I've removed everything from preloaded now
thanks
Where are there constants in my code?

Thanks for the feedback.
I've removed everything from the preloaded section.
I wasn't sure what the user could see.

Constants should have names in ALL_CAPS. Also, take your reference solution out of Preloaded and put it in Tests where it belongs.

There is no point putting locales in user solutions again since it's already pre-defined. You should also mentioned that it's pre-defined too.

Yes, by checking intermediate results I meant leaving the array temporarily, then coming back into it.

That still isn't tested.