uncommon `Int` expectations handled unexpectedly

elm-explorations / test

Write unit and fuzz tests for Elm code.

BSD 3-Clause "New" or "Revised" License

236 stars 40 forks source link

Open lue-bird opened 2 years ago

lue-bird commented 2 years ago

elm-test thinks Ints are Floats with

Infinity
-Infinity
```
((1 / 0) |> round) |> Expect.equal ((1 / 0) |> round)
```
Do not use Expect.equal with floats. Use Float.within instead.

elm-test doesn't complain on

different versions of NaN (which are always correctly reported as "expectation hasn't been met")
fractions (created from n ^ -x) (this is kinda surprising)

lue-bird commented 2 years ago

(This is a really niche issue which won't provide much use being addressed)