senpi QA
QA the senpi coding agent (packages/{ai,agent,coding-agent,tui}) by driving the
REAL CLI — not by reading code or trusting unit tests. Each channel runs the
agent from source via tsx in an isolated sandbox and asserts observable
behavior, so a passing run is evidence the user-facing surface actually works.
Every helper script ships a --self-test (or --self-check) that asserts its
scenario against this machine. The scripts are therefore both the QA tools and
their own regression checks.
Golden rules (read before running anything)
- Isolation is mandatory. Everything spawns the CLI with
SENPI_CODING_AGENT_DIR / SENPI_CODING_AGENT_SESSION_DIR pointed at a temp
sandbox and PI_OFFLINE=1. QA must never write into the real ~/.senpi.
scripts/lib/common.mjs does this for you — use it.
- Never read or modify the real credentials.
~/.senpi/agent/auth.json is
the user's real key store. Every script snapshots its sha256 and asserts it is
unchanged at the end. If you script a run by hand, do the same
(guardRealAuth() in common.mjs).
- Deterministic loop = mock loop. To exercise the agent loop without real
tokens, use Channel 3 (a local fake model server). Real-provider runs are for
final smoke only and must use the user's existing auth, never a new key.
- No
src/ edits from this skill. It verifies; it does not fix. If QA finds
a bug, report it with the captured evidence and let a follow-up change fix it.
- The captured artifact IS the evidence. Write it under
local-ignore/qa-evidence/<YYYYMMDD>-<slug>/. No artifact == the QA did not
happen. local-ignore/ is gitignored — never commit evidence.
Setup (once)
node scripts/devenv-setup.mjs # installs skill deps (node-pty), wires .env.local + .claude/skills
node .agents/skills/senpi-qa/scripts/lib/common.mjs --self-check # confirm the harness
common.mjs --self-check confirms the repo resolves, a sandbox is created and
auto-removed, a free port is allocatable, and the real auth file is untouched.
Router: match QA to your change
| You changed… | Run this channel | Reference |
|---|
| Agent loop, tools, sessions, provider/model resolution, RPC | Channel 1 (RPC) — and Channel 3 for a deterministic loop | references/rpc-protocol.md |
| Interactive TUI, keybindings, rendering, composer | Channel 2 (TUI smoke) | references/tui-driving.md |
| Anything where you want a full agent turn with ZERO tokens | Channel 3 (mock loop) | references/mock-loop.md |
CLI flags, --help, --print, model listing | Channel 4 (CLI smoke) | — |
Persistent terminal tools / packages/pty / PTY sessions | Channel 5 (pty-drive) | — |
| Added a provider / auth path | Channel 3 + 4, and update references/env-vars.md | references/credential-injection.md |
When in doubt, run the channel closest to your change AND Channel 3 (mock loop):
the mock loop is the cheapest end-to-end proof that the agent still completes a
turn.
Channels
All commands are run from the repo root.
Channel 1 — Remote RPC (scripts/rpc-drive.mjs)
Drives --mode rpc (JSON lines over stdio). get_state round-trips with no API
call; --prompt drives a real turn and captures the event stream.
node .agents/skills/senpi-qa/scripts/rpc-drive.mjs --self-test
node .agents/skills/senpi-qa/scripts/rpc-drive.mjs --state
node .agents/skills/senpi-qa/scripts/rpc-drive.mjs --prompt "say PONG" --provider mock --model mock-model --evidence rpc-pong
Channel 2 — TUI smoke (scripts/tui-smoke.mjs)
Boots the interactive TUI in a real pseudo-terminal, confirms it renders and a
keystroke reaches the composer, then tears it down. Uses node-pty (ConPTY on
Windows — no WSL) and falls back to tmux on POSIX.
node .agents/skills/senpi-qa/scripts/tui-smoke.mjs --self-test
node .agents/skills/senpi-qa/scripts/tui-smoke.mjs --self-test --driver tmux --evidence tui
TUI smoke proves boot/render/input, not fine-grained output. For behavioral
assertions use Channel 1 or 3.
Channel 3 — Mock loop (scripts/mock-loop.mjs)
Starts a local fake model server, registers it via a baseUrl override in an
isolated models.json, and drives a REAL turn — deterministic, zero tokens.
Covers all three wire formats senpi uses, so baseUrl override is QA'd for both
OpenAI and Anthropic (pick with --api; default openai-completions):
--api | provider overridden | path / auth |
|---|
openai-completions | mock | /v1/chat/completions · Bearer |
anthropic-messages | anthropic | /v1/messages · x-api-key |
openai-responses | openai | /v1/responses · Bearer |
--self-test (no --api) round-trips all three and exercises the three
error/retry scenarios below. --with-tool proves the full loop (model → bash tool → final text). --with-mcp-tool registers a sandbox
extension that proxies mcp_fx_tool_<n> to the local MCP stdio fixture, then
asserts the fixture call log exists and the model's second request contains the
fixture result. The loop is hermetic: provider key env vars are stripped so only
the inline mock key is ever used.
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --self-test
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --self-test --api anthropic-messages
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --with-tool --api openai-responses
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --with-mcp-tool mcp_fx_tool_1 --tool-args '{"value":"ok"}'
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --with-eval-hard-limit --evidence eval-hard-limit
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --scenario transient-recover
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --scenario budget-exhaust
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --scenario long-retry-after
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --run "summarize this repo" --evidence mock-summary
Channel 4 — CLI smoke (scripts/cli-smoke.mjs)
Fast, no model: --help, --version, offline --list-models, unknown-flag
handling.
node .agents/skills/senpi-qa/scripts/cli-smoke.mjs --self-test
Channel 5 — Persistent terminal / PTY (scripts/pty-drive.mjs)
Drives the real @earendil-works/pi-pty runtime that backs the built-in terminal
tools (bash / bash_output / bash_input / bash_resize / kill_bash) through the
canonical scenarios: background command + monitor-style line watch and peek, stdin
steering, screen snapshot + resize reflow, and registry teardown with no orphans. Uses native PTY when a host
prebuild is present, else the pipe fallback (--force-pipe forces it).
node .agents/skills/senpi-qa/scripts/pty-drive.mjs --self-test --evidence terminal
node .agents/skills/senpi-qa/scripts/pty-drive.mjs --self-test --force-pipe
Scripts index (each is its own regression test)
| Script | --self-test / --self-check asserts |
|---|
scripts/lib/common.mjs --self-check | repo + tsx resolve; sandbox created and auto-removed; free port; real auth.json unchanged |
scripts/lib/fake-model-server.mjs --self-test | OpenAI SSE contract: scripted text streams back, [DONE] sent, request recorded |
scripts/rpc-drive.mjs --self-test | get_state returns the documented RpcSessionState, no API call, auth unchanged |
scripts/mock-loop.mjs --self-test | scripted marker returns through the real loop via the mock provider; retry error injection proves same-model recovery, retry-budget fallback, and long-retry-after fallback; zero real calls; auth unchanged |
scripts/mock-loop.mjs --with-tool | full loop: two model turns served, bash tool ran, final text returned |
scripts/mock-loop.mjs --with-mcp-tool <tool> | full loop with a registered sandbox MCP stdio fixture proxy; fails if the requested mcp_fx_tool_<n> is not registered, invoked, and fed back to the model |
scripts/mock-loop.mjs --with-eval-hard-limit | full loop where a never-returning eval cell is killed by its wall-clock hard limit and the kill is reported back to the model |
scripts/eval-hard-limit-rpc-qa.mjs --self-test | RPC channel: a DETACHED eval cell killed by the hard limit injects its <system-reminder> kill notice into the model's next request (print mode cannot show this) |
scripts/tui-smoke.mjs --self-test | TUI boots, renders, accepts a keystroke, tears down; auth unchanged |
scripts/cli-smoke.mjs --self-test | --help/--version/--list-models work offline; unknown flag reported; auth unchanged |
scripts/pty-drive.mjs --self-test | PTY runtime backing the terminal tools: background line watch + peek, stdin steering, screen snapshot + resize, registry teardown (no orphans); auth unchanged |
Run the whole suite:
for s in lib/common.mjs:--self-check lib/fake-model-server.mjs:--self-test \
rpc-drive.mjs:--self-test mock-loop.mjs:--self-test \
tui-smoke.mjs:--self-test cli-smoke.mjs:--self-test; do
node ".agents/skills/senpi-qa/scripts/${s%%:*}" "${s##*:}" || echo "FAILED: $s"
done
Capturing evidence
ev="local-ignore/qa-evidence/$(date +%Y%m%d)-senpi-qa-<slug>"; mkdir -p "$ev"
node .agents/skills/senpi-qa/scripts/mock-loop.mjs --self-test | tee "$ev/mock-loop.txt"
node .agents/skills/senpi-qa/scripts/rpc-drive.mjs --prompt "say PONG" \
--provider mock --model mock-model --evidence senpi-qa-<slug>
Most channels accept --evidence <slug> and write artifacts to
local-ignore/qa-evidence/<date>-<slug>/ themselves.
References
references/rpc-protocol.md — RPC command/response catalog, turn completion, examplesreferences/tui-driving.md — node-pty vs tmux, keybindings files, fragility, isolationreferences/mock-loop.md — fake server, custom-provider models.json shape, in-process faux alternativereferences/credential-injection.md — per-harness credential injection + maskingreferences/env-vars.md — provider keys + isolation env vars