diff options
Diffstat (limited to 'test/cli.t')
| -rw-r--r-- | test/cli.t | 32 |
1 files changed, 31 insertions, 1 deletions
@@ -17,7 +17,7 @@ A year outside the supported domain is rejected (exit 2): No/garbage arguments give a usage error (exit 2): $ colitur - colitur: usage: colitur easter <year> | colitur temporal <year> | colitur day <year> | colitur readings <year> + colitur: usage: colitur easter <year> | colitur temporal <year> | colitur day <year> | colitur readings <year> (try: colitur --help) [2] The EF temporal cycle for a year, one line per day: @@ -211,3 +211,33 @@ with a confusing per-file error. (Exercised directly in the task, by creating _build/default/share/colitur/ef and confirming the year still resolves; not reproduced here because the cram sandbox's own exe path makes the layout awkward to stage without asserting on dune internals.) + +Help and usage are different things, and the difference is the Unix +convention rather than a preference. Asking for help is a request that +SUCCEEDED: it goes to standard output and exits 0, so it can be piped into a +pager or grepped. Being invoked wrongly is an error: a one-liner to standard +error, exit 2, leaving stdout clean for whatever the caller was really trying +to capture. + + $ colitur --help | head -1 + colitur -- deterministic liturgical calendar engine (Roman rite, 1962) + + $ colitur -h | head -1 + colitur -- deterministic liturgical calendar engine (Roman rite, 1962) + + $ colitur --help > /dev/null + $ colitur -h > /dev/null + +Nothing on stderr, and exit 0 (an exit other than 0 would print a [N] line): + + $ colitur --help 2>&1 >/dev/null + +The error path is the mirror image -- nothing on stdout, exit 2: + + $ colitur bogus 2>/dev/null + [2] + +Every command the help lists is a command the binary actually accepts. This +is the check that catches help text drifting away from the dispatch: + + $ for c in easter temporal day readings; do colitur $c 2026 > /dev/null || echo "$c FAILED"; done |