1#!/usr/bin/env bash
2# Checks launch.sh the way a client meets it: a bare environment, scripted
3# stdio, timed. Runs against a scratch copy of the layout, so the real
4# run/bin is never moved (a live client may be reconnecting through it).
5set -euo pipefail
6
7REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
8scratch="$(mktemp -d)"
9trap 'rm -rf "$scratch"' EXIT
10mkdir -p "$scratch/tools/mcp" "$scratch/run"
11cp "$REPO_ROOT/tools/mcp/launch.sh" "$scratch/tools/mcp/"
12
13INIT='{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"test","version":"0"}}}'
14READY='{"jsonrpc":"2.0","method":"notifications/initialized"}'
15LIST='{"jsonrpc":"2.0","id":2,"method":"tools/list"}'
16failed=0
17
18# $1 = case name, $2 = the id the last line must answer, $3 = what it must hold
19check() {
20    local name="$1" id="$2" want="$3" start reply ms
21    start="$EPOCHREALTIME"
22    coproc LAUNCH { env -i HOME="$HOME" PATH=/usr/bin:/bin "$scratch/tools/mcp/launch.sh" 2>/dev/null; }
23    printf '%s\n' "$INIT" >&"${LAUNCH[1]}"
24    [[ "$id" == 2 ]] && IFS= read -r -t 5 reply <&"${LAUNCH[0]}" && printf '%s\n%s\n' "$READY" "$LIST" >&"${LAUNCH[1]}"
25    reply=""
26    IFS= read -r -t 5 reply <&"${LAUNCH[0]}" || true
27    ms=$(( (${EPOCHREALTIME/./} - ${start/./}) / 1000 ))
28    kill "$LAUNCH_PID" 2>/dev/null || true
29    wait "$LAUNCH_PID" 2>/dev/null || true
30    if [[ "$reply" == *"\"id\":$id"* && "$reply" == *"$want"* && "$ms" -lt 1000 ]]; then
31        echo "ok   $name (${ms} ms)"
32    else
33        echo "FAIL $name (${ms} ms): ${reply:-no reply}"
34        failed=1
35    fi
36}
37
38check "no binary: initialize gets an error naming install.sh" 1 'install.sh'
39
40if [[ -x "$REPO_ROOT/run/bin/native" ]]; then
41    ln -s "$REPO_ROOT/run/bin" "$scratch/run/bin"
42    check "installed: tools/list answers" 2 '"result":{"tools":'
43else
44    echo "skip installed case: no run/bin/native (run tools/mcp/install.sh)"
45fi
46exit "$failed"