I just got bitten by a weird issue where the test I expected to run
was ignored, and never appeared in test runs. I just forgot the final
`()` parameter to the `test` function, and `foo;;` was perfectly happy
to accept an input of non-unit type. Now using explicits `let () =` to
avoid that issue in the future.
git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@14136 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02