# \#language-agnostic **URL:** https://discuss.ocaml.org/tag/language-agnostic/630.md [Latest](https://discuss.ocaml.org/latest.md) · [Categories](https://discuss.ocaml.org/categories.md) · [Tags](https://discuss.ocaml.org/tags.md) --- ## [What functions deserve tests?](https://discuss.ocaml.org/t/what-functions-deserve-tests/13268)
**Author:** [@unfode](https://discuss.ocaml.org/u/unfode)\ **Replies:** 29\ **Last updated:** [October 21, 2023, 6:47am UTC](https://discuss.ocaml.org/t/what-functions-deserve-tests/13268 "2023-10-21T06:47:57Z")
In my opinion, tests are not needed for function string\_of\_day: type day = Monday | Tuesday let string\_of\_day (day: day) : string = match day with | Monday -\> "Monday" | Tuesday -\> "Tuesday" In contrast, I feel o…