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OUnit is a unit test framework for OCaml. It allows one to easily createunit-tests for OCaml code. It is loosely based onHUnit, a unit testingframework for Haskell. It is similar toJUnit, and other XUnit testingframeworks.

Features:

• colored output
• JUnit report generation
• HTML report generation

The recommended way to install ounit is via theopam package manager:

$ opam install ounit2

API documentation isavailable online.

• From the examples/ directory of ounit:
  • test_list.ml
  • test_stack.ml
• External projects:
  • OASIS tests

In the past OUnit used the ocamlfind package name "oUnit". It is uncommon touse uppercase letters in ocamlfind package name. It caused some problems duringthe transition to "dune". It was also not the same name as the OPAM package. Asof version 2.2, the opam package ounit and the ocamlfind package oUnit arerenamed to ounit2 (the same for both the ocamlfind and opam packages).

To do the transition for your own tests:

• in OPAM, the library should now depends on "ounit2" or "ounit2-lwt"
• in dune files/OASIS/Makefile/pkg.ml replace "oUnit" by "ounit2" and"ounit-lwt" to "ounit2-lwt".

We will keep OPAM packages "ounit"/"ounit-lwt" for the transition.