- pty.mjs: narrow the BSD argv set to {darwin, freebsd}. Grouping every
BSD together was wrong — NetBSD's `script` takes the command through
`-c`, so the argv form fails at `script` startup, which this smoke would
then report as a TUI crash. Rather than add an unverified `-c` branch
for netbsd/openbsd, they fall through to `null` and the smoke skips with
the reason: a guessed invocation turns a clean skip into a false failure
while looking like support.
- pty.test.mjs: "supported unless Windows" would fail `test:scripts` on
aix/sunos/netbsd/openbsd, where a null wrapper is correct and the smoke
skips by design. State the policy once (SUPPORTED_PLATFORMS) and branch
on it, keeping the real-probe teeth that catch a `script` missing from
PATH. Pin netbsd/openbsd/aix/sunos to null in scriptFlavorFor's tests
so "unsupported" reads as the default, not a win32 special case.
- render-smoke.mjs: the @returns contract claimed a close guarantee the
code does not give — both drain give-up branches resolve after only a
warning, so output can be truncated and the child may still hold the
work dir. Document the bounded fallback and name the required cleanup
shape (removeSafe, not rmSync), since a caller "tightening" cleanup on
the old wording would reintroduce #1801 exactly where it doesn't hold.
- AGENTS.md, clients/launcher/README.md: drop the pre-#2111 claim that the
smokes build test-servers "on demand if it is missing". ensureTestServers
rebuilds unconditionally, once per process — presence is not freshness.
- .github/copilot-instructions.md: mirror the survival rule, per the
same-PR mirroring requirement. One bullet, generalized past this fix:
a smoke must assert the thing survives, not that it started, and the
started-then-died branch belongs in a scripts/lib test against a stub.
Signed-off-by: Cliff Hall <cliff@futurescale.com>
Signed-off-by: cliffhall <cliff@futurescale.com>
`smoke:tui` spawned the launcher with `stdio: ["ignore", …]`, waited for
"MCP Servers" in the output, printed OK, and SIGTERMed. It never looked at
the child again.
The child was already dead. Ink mounts `useInput`, `useInput` needs raw
mode, and raw mode is a property of the file descriptor — with stdin on
/dev/null the TUI painted one frame and exited 1 about 40ms later with
"Raw mode is not supported on the current process.stdin". Measured here:
first frame at 396ms, exit 1 at 433ms. The smoke won that race and
reported success, so what it asserted was *first paint*, not survival —
contradicting its own header ("boots and renders without crashing").
This is not environment-specific: `stdio: ["ignore", …]` makes the child's
stdin /dev/null whether or not the developer's terminal is a TTY, so this
smoke has never verified a running TUI on any machine. And the race cut
both ways — an `exit` processed first failed the run, which reads as flake
rather than as the standing defect.
Two pieces:
- `scripts/lib/pty.mjs` gives the child a real terminal via `script(1)`,
no dependency. The three flavors are not interchangeable (BSD takes
argv; util-linux takes one shell string plus `-e`; busybox that string
without `-e`), so the invocation is built and unit-tested rather than
written inline. A platform with no `script(1)` skips loudly instead of
running without one, which would be a guaranteed failure rather than a
weaker check.
- `scripts/lib/render-smoke.mjs` is the fix: the child must still be
running `surviveMs` (default 2s) after first paint. Without that, a
future harness change reintroduces the same false green and nothing
notices — which is why it lives in a module `test:scripts` drives
against a stub that paints the marker and immediately exits. Today's
harness passes that stub; this one fails it, with a diagnostic that
distinguishes "died after painting" from "died before painting".
The smoke additionally fails if the raw-mode error appears in a passing
run, so a future Ink that degrades to a warning instead of throwing can't
ship a TUI with no keyboard input past this gate.
Verified end to end: with a `script` shim that allocates no pty, the smoke
now fails with "it painted one frame, it did not run"; with the real one
the TUI is still running 2s after its first frame and never logs the
raw-mode error.
The `process.env.CI` skip stays, but its comment is corrected: the PTY
removes the technical blocker it used to cite, so the smoke is local-only
by decision now, not by capability. Whether it joins GitHub CI is out of
scope here (#2146 is keeping the other local-only smokes out on purpose).
Signed-off-by: Cliff Hall <cliff@futurescale.com>
Signed-off-by: cliffhall <cliff@futurescale.com>
cliffhall