feat(#6): startup session picker for bare TUI mode

v1 coverage-audit slice b2. The audit found list_sessions had no
caller — the startup session picker (design-brief §4) was never built;
bare TUI mode was a hard usage error. Add SessionPickerApp (mirrors
AgentPickerApp) and resolve bare mode in _resolve_then_run.

- Bare TUI mode (no --session/--new) now valid → session picker.
  Resolution: 0 sessions -> [no_sessions] exit 14 (resume-only per
  §4 "no in-app creation, --new only"); exactly 1 -> auto-resume
  (§4 "picker only when >1"); >=2 -> SessionPickerApp -> resume pick
  (Esc/Ctrl-D -> exit 0).
- cli._parse: bare TUI valid; --send still requires one flag; --agent
  forbidden in bare mode. run_tui PRE-002 xor -> mutually-exclusive.
- Contract #6 amended (SessionPickerApp + bare-mode resolution) +
  validated. TDD: 3 picker pilot tests + 5 resolution tests + 3 cli
  validation tests. Suite 528 green; touched code ruff-clean.

Design note: bare + 0 sessions errors (honors §4's no-in-app-creation
clause); the friendlier auto-fall-through-to-new is deferred pending
operator preference.
This commit is contained in:
vh
2026-06-30 22:05:14 -07:00
parent 2ba4244e9e
commit 5c1b9816d4
8 changed files with 483 additions and 14 deletions
+222
View File
@@ -2945,3 +2945,225 @@ class TestTuiBifrostBind:
err = capsys.readouterr().err
assert "bifrost: status=bound" in err
assert "plane=memory" in err
class TestSessionPickerApp:
"""docs/contracts/issues/6.contract.md FN SessionPickerApp (amendment slice b2)."""
@staticmethod
def _two():
from ratatoskr.sessions import SessionInfo
return [
SessionInfo(
session_id="s-first-0001", agent_id="mimir", created_at="t0",
last_active="t1", metadata={}, message_count=3, name=None,
archived=False, tags=[],
),
SessionInfo(
session_id="s-second-002", agent_id="echo", created_at="t0",
last_active="t2", metadata={}, message_count=None, name="probe",
archived=False, tags=[],
),
]
def test_pick_returns_session_id(self) -> None:
"""pick_returns_session_id [happy,tracer]: idx 1 + Enter → exit value == that session_id."""
from ratatoskr.tui import SessionPickerApp
app = SessionPickerApp(self._two())
async def drive() -> str | None:
async with app.run_test() as pilot:
from textual.widgets import ListView
lv = app.query_one("#session-list", ListView)
lv.index = 1
await pilot.pause()
await pilot.press("enter")
await pilot.pause()
return app.return_value
import asyncio
assert asyncio.run(drive()) == "s-second-002"
def test_esc_returns_none(self) -> None:
"""esc_returns_none [happy]: Esc → exit value is None (dismiss, resume nothing)."""
from ratatoskr.tui import SessionPickerApp
app = SessionPickerApp(self._two())
async def drive() -> str | None:
async with app.run_test() as pilot:
await pilot.press("escape")
await pilot.pause()
return app.return_value
import asyncio
assert asyncio.run(drive()) is None
def test_ctrl_d_returns_none(self) -> None:
"""ctrl_d_returns_none [adversarial]: Ctrl-D → None."""
from ratatoskr.tui import SessionPickerApp
app = SessionPickerApp(self._two())
async def drive() -> str | None:
async with app.run_test() as pilot:
await pilot.press("ctrl+d")
await pilot.pause()
return app.return_value
import asyncio
assert asyncio.run(drive()) is None
class TestBareSessionPicker:
"""docs/contracts/issues/6.contract.md amendment (slice b2): _resolve_then_run bare mode."""
@staticmethod
def _bare_args() -> ParsedArgs:
return ParsedArgs(
send_content=None, session_id=None, new=False, agent_id=None,
api_key="k", server_url="https://w.example", raw=False,
end_user_id=None, bifrost=None, bifrost_plane=None, consumer_key=None,
)
@staticmethod
def _sess(sid: str, agent: str = "mimir"):
from ratatoskr.sessions import SessionInfo
return SessionInfo(
session_id=sid, agent_id=agent, created_at="t0", last_active="t1",
metadata={}, message_count=1, name=None, archived=False, tags=[],
)
def test_bare_zero_sessions_errors(
self, monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
) -> None:
"""bare_zero_sessions_errors [error]: 0 sessions → exit 14 [no_sessions]; App not opened."""
import ratatoskr.tui as tui_mod
from ratatoskr.sessions import SessionPage
async def fake_list(client, **kw):
return SessionPage(items=[], next_cursor=None)
monkeypatch.setattr(tui_mod, "list_sessions", fake_list)
opened: list[int] = []
async def spy(self, *a, **k):
opened.append(1)
return 0
monkeypatch.setattr(RatatoskrApp, "run_async", spy)
rc = run_tui(self._bare_args())
assert rc == 14
assert "[no_sessions]" in capsys.readouterr().err
assert not opened
def test_bare_one_session_auto_resumes(self, monkeypatch: pytest.MonkeyPatch) -> None:
"""bare_one_session_auto_resumes: exactly 1 → auto-resume, no picker (§4 >1 rule)."""
import ratatoskr.tui as tui_mod
from ratatoskr.sessions import SessionPage
from ratatoskr.tui import SessionPickerApp
async def fake_list(client, **kw):
return SessionPage(items=[self._sess("s-solo")], next_cursor=None)
monkeypatch.setattr(tui_mod, "list_sessions", fake_list)
picker_used: list[int] = []
async def spy_picker(self, *a, **k):
picker_used.append(1)
return None
monkeypatch.setattr(SessionPickerApp, "run_async", spy_picker)
snap: dict = {}
async def cap(self, *a, **k):
snap["sid"] = self.session_id
return 0
monkeypatch.setattr(RatatoskrApp, "run_async", cap)
rc = run_tui(self._bare_args())
assert rc == 0
assert snap["sid"] == "s-solo"
assert not picker_used
def test_bare_multi_opens_picker(self, monkeypatch: pytest.MonkeyPatch) -> None:
"""bare_multi_opens_picker [scenario,tracer]: >1 → picker; its choice resumes."""
import ratatoskr.tui as tui_mod
from ratatoskr.sessions import SessionPage
from ratatoskr.tui import SessionPickerApp
async def fake_list(client, **kw):
return SessionPage(items=[self._sess("s-a"), self._sess("s-b")], next_cursor=None)
monkeypatch.setattr(tui_mod, "list_sessions", fake_list)
async def pick_b(self, *a, **k):
return "s-b"
monkeypatch.setattr(SessionPickerApp, "run_async", pick_b)
snap: dict = {}
async def cap(self, *a, **k):
snap["sid"] = self.session_id
return 0
monkeypatch.setattr(RatatoskrApp, "run_async", cap)
rc = run_tui(self._bare_args())
assert rc == 0
assert snap["sid"] == "s-b"
def test_bare_picker_dismiss_exits_zero(self, monkeypatch: pytest.MonkeyPatch) -> None:
"""bare_picker_dismiss_exits_zero [scenario]: picker None → exit 0; App not opened."""
import ratatoskr.tui as tui_mod
from ratatoskr.sessions import SessionPage
from ratatoskr.tui import SessionPickerApp
async def fake_list(client, **kw):
return SessionPage(items=[self._sess("s-a"), self._sess("s-b")], next_cursor=None)
monkeypatch.setattr(tui_mod, "list_sessions", fake_list)
async def pick_none(self, *a, **k):
return None
monkeypatch.setattr(SessionPickerApp, "run_async", pick_none)
opened: list[int] = []
async def spy(self, *a, **k):
opened.append(1)
return 0
monkeypatch.setattr(RatatoskrApp, "run_async", spy)
rc = run_tui(self._bare_args())
assert rc == 0
assert not opened
def test_bare_list_sessions_api_failure(
self, monkeypatch: pytest.MonkeyPatch, capsys: pytest.CaptureFixture[str]
) -> None:
"""bare_list_sessions_api_failure [error]: list_sessions 500 → exit 20; App not opened."""
import ratatoskr.tui as tui_mod
from ratatoskr.sessions import SessionApiFailed
async def fake_list(client, **kw):
raise SessionApiFailed(status=500, body=b"boom")
monkeypatch.setattr(tui_mod, "list_sessions", fake_list)
opened: list[int] = []
async def spy(self, *a, **k):
opened.append(1)
return 0
monkeypatch.setattr(RatatoskrApp, "run_async", spy)
rc = run_tui(self._bare_args())
assert rc == 20
assert "[session_api_failed]" in capsys.readouterr().err
assert not opened