test/test-startup-race.sh

1#!/usr/bin/env bash

2# Concurrent startup on a fresh root.

3#

4# Every session starts its own folio process against the same root, and the

5# root's directories are created check-then-create. Processes starting

6# together on a root without archive/ collided and one exited with

7# "make-directory: File exists" before answering initialize: 20 of 480

8# starts on 0.2.11 native, 9 of 240 on the dev build.

9#

10# The race needs processes that really start at the same moment, which a

11# sigil test's sequential process-spawn cannot produce, so this is a shell

12# test. Trials and width are sized so that the unfixed build fails almost

13# surely: at 4% per start, 20 trials of 8 leave about a 0.2% chance of a

14# false pass.

15#

16# Exit 0 on pass, 1 on any failed start, 2 if the binary could not be found.

17set -u

19FOLIO=${FOLIO:-$(dirname "$0")/../build/release/bin/folio}

20if [ ! -x "$FOLIO" ]; then

21 FOLIO=$(dirname "$0")/../build/dev/bin/folio

22fi

23if [ ! -x "$FOLIO" ]; then

24 echo "ERROR: no folio binary at build/release/bin/folio or build/dev/bin/folio" >&2

25 exit 2

26fi

28TRIALS=${TRIALS:-20}

29WIDTH=${WIDTH:-8}

30WORK=$(mktemp -d -t folio-startup.XXXXXX)

31trap 'rm -rf "$WORK"' EXIT

32INIT='{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-11-25","capabilities":{}}}'

34dead=0

35for trial in $(seq 1 "$TRIALS"); do

36 root="$WORK/root-$trial"

37 mkdir -p "$root/notes" "$root/projects"

38 : > "$root/inbox.md"

39 for i in $(seq 1 "$WIDTH"); do

40 (echo "$INIT" | FOLIO_ROOT="$root" "$FOLIO" serve > "$WORK/out-$trial-$i" 2>&1) &

41 done

42 wait

43 for i in $(seq 1 "$WIDTH"); do

44 if ! grep -q protocolVersion "$WORK/out-$trial-$i"; then

45 dead=$((dead + 1))

46 echo " FAIL trial $trial process $i: $(tail -c 200 "$WORK/out-$trial-$i" | tr '\n' ' ')"

47 fi

48 done

49done

51total=$((TRIALS * WIDTH))

52if [ "$dead" -eq 0 ]; then

53 echo " PASS $total concurrent starts on fresh roots, all answered initialize"

54 exit 0

55fi

56echo " FAIL $dead of $total concurrent starts died"

57exit 1