The haskell tests are totally broken; there are several solutions that just return a static string that succeed. Please fix!

Honestly pretty disappointed that the tests only accept a certian tree for pass1. I really like the way I implemented it with the tree going the other way but now I have to refactor everything to get it going the other way and I'm having a really tough time of it.

for example 1+2+3+4

right: Add (Add (Add (Imm 1) (Imm 2)) (Imm 3)) (Imm 4)

wrong: Add (Imm 1) (Add (Imm 2) (Add (Imm 3) (Imm 4)))

Old version

I just finished my solution and I have a habit of working on these without even looking at the function definition. I was surprised when I saw it using Text instead of String but ultimately it was very easy to adapt my solution to use Text instead. Text also has a few more useful functions than String, but I had to install the package to work with it on my machine. For what it's worth, I think Text is fine.

That's a bit rude, but not really. I'm a beginner to haskell and this is the solution that made sense to me. It just means I have more to learn :)