Files
Gitea-Tools/tests/test_issue_772_unpublished_claim_recovery.py
T
sysadminandGrok 4.5 c31df2130c test(mcp): AC9 assessor/mutator parity + AC6 unpublished recovery MCP regressions (PR #774 F1/F2)
Local worktree commit only (publication blocked by dangling GITEA_AUTHOR_WORKTREE).
Tests only; no production code change.

Co-Authored-By: Grok 4.5 <[email protected]>
2026-07-20 16:13:53 -04:00

1005 lines
38 KiB
Python

"""Unpublished-claim dead-session lock recovery (#772).
An author claim whose work exists only as a clean local commit — never pushed,
never turned into a PR — was unrecoverable once the owning session exited: every
recovery disposition derived ownership from a remote branch head or an owning PR
head, and an unpublished claim has neither.
These tests exercise the disposition through its evidence, never through any
issue number: every case here uses an arbitrary issue number, and the same
assertions hold for any other. The #617 *shape* (durable lock, unexpired lease,
dead PID, no remote branch, no PR) is what is under test.
"""
from __future__ import annotations
import os
import subprocess
import sys
import tempfile
import unittest
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
import issue_lock_recovery # noqa: E402
import issue_lock_store # noqa: E402
import issue_lock_worktree # noqa: E402
DEAD_PID = 999_999_999
LIVE_PID = os.getpid()
WORKTREE = "/tmp/wt/issue-901-example"
BRANCH = "fix/issue-901-example"
BASE_SHA = "0568f44cb2d87e78fd394a27a670e33c84f7842f"
HEAD_SHA = "b46f0f9f138d569edbc73e0d36df4b34239f9934"
OTHER_SHA = "1111111111111111111111111111111111111111"
def durable_lock(**overrides):
"""A complete, internally consistent unpublished author lock."""
lock = {
"issue_number": 901,
"branch_name": BRANCH,
"worktree_path": WORKTREE,
"remote": "prgs",
"org": "Example-Org",
"repo": "Example-Repo",
"session_pid": DEAD_PID,
"pid": DEAD_PID,
"work_lease": {
"operation_type": "author_issue_work",
"issue_number": 901,
"pr_number": None,
"branch": BRANCH,
"worktree_path": WORKTREE,
"claimant": {"username": "author-user", "profile": "prgs-author"},
},
"claimant": {"username": "author-user", "profile": "prgs-author"},
}
lock.update(overrides)
return lock
def base_ancestry(
*,
ancestor=BASE_SHA,
descendant=HEAD_SHA,
probe_ok=True,
ancestor_present=True,
strict=True,
reasons=None,
):
return {
"ancestor_sha": ancestor,
"descendant_sha": descendant,
"probe_ok": probe_ok,
"ancestor_present": ancestor_present,
"descendant_present": True,
"is_ancestor": strict,
"is_strict_descendant": strict,
"proof": "merge-base --is-ancestor -> exit 0",
"reasons": reasons or [],
}
def assess(lock=None, **overrides):
"""Assess an unpublished claim; overrides tweak one fact at a time."""
kwargs = {
"issue_number": 901,
"branch_name": BRANCH,
"worktree_path": WORKTREE,
"remote": "prgs",
"org": "Example-Org",
"repo": "Example-Repo",
"identity": "author-user",
"profile": "prgs-author",
"current_branch": BRANCH,
"porcelain_status": "",
"head_sha": HEAD_SHA,
"remote_head_sha": None,
"pr_head_sha": None,
"pr_number": None,
"competing_live_locks": [],
"candidate_branches": [BRANCH],
"current_pid": LIVE_PID,
"remote_branch_exists": False,
"recorded_base_sha": BASE_SHA,
"base_ancestry": base_ancestry(),
}
kwargs.update(overrides)
return issue_lock_recovery.assess_dead_session_lock_recovery(
durable_lock() if lock is None else lock, **kwargs
)
class UnpublishedClaimRecoveryGranted(unittest.TestCase):
"""The #617 shape: every element agrees and the owner is dead."""
def test_recovery_is_sanctioned(self):
result = assess()
self.assertEqual(result["outcome"], issue_lock_recovery.RECOVERY_SANCTIONED)
self.assertTrue(result["recovery_sanctioned"])
def test_mode_and_head_relation_name_the_unpublished_disposition(self):
evidence = assess()["evidence"]
self.assertEqual(
evidence["recovery_mode"],
issue_lock_recovery.RECOVERY_MODE_UNPUBLISHED_CLAIM,
)
self.assertEqual(
evidence["head_relation"],
issue_lock_recovery.HEAD_RELATION_DESCENDS_FROM_BASE,
)
self.assertEqual(evidence["recorded_base"], BASE_SHA)
self.assertEqual(evidence["accepted_head"], HEAD_SHA)
self.assertFalse(evidence["remote_branch_exists"])
def test_no_remote_branch_or_pr_is_required(self):
"""Neither artifact may be demanded for this recovery mode."""
result = assess(remote_head_sha=None, pr_head_sha=None, pr_number=None)
self.assertTrue(result["recovery_sanctioned"])
def test_recovery_record_carries_mode_and_base(self):
record = issue_lock_recovery.build_recovery_record(
assess(), recovered_at="2026-07-20T19:05:27Z"
)
self.assertTrue(record["recovered"])
self.assertEqual(
record["recovery_mode"],
issue_lock_recovery.RECOVERY_MODE_UNPUBLISHED_CLAIM,
)
self.assertEqual(record["recorded_base"], BASE_SHA)
self.assertEqual(record["accepted_head"], HEAD_SHA)
def test_unpublished_recovery_grants_no_owning_pr_exemption(self):
"""There is no PR, so no duplicate-gate exemption may be produced."""
self.assertIsNone(issue_lock_recovery.owning_pr_recovery_evidence(assess()))
class UnpublishedClaimRecoveryRefused(unittest.TestCase):
"""Every rejection condition must fail closed, independently."""
def refusal(self, **overrides):
result = assess(**overrides)
self.assertEqual(result["outcome"], issue_lock_recovery.REFUSED)
self.assertFalse(result["recovery_sanctioned"])
return " ".join(result["reasons"])
def test_live_prior_owner(self):
lock = durable_lock(session_pid=LIVE_PID, pid=LIVE_PID)
result = assess(lock=lock, current_pid=LIVE_PID + 1)
self.assertFalse(result["recovery_sanctioned"])
self.assertIn("still alive", " ".join(result["reasons"]))
def test_foreign_identity(self):
self.assertIn(
"does not match active identity", self.refusal(identity="someone-else")
)
def test_foreign_profile(self):
self.assertIn(
"does not match active profile", self.refusal(profile="prgs-reviewer")
)
def test_dirty_worktree(self):
self.assertIn("clean", self.refusal(porcelain_status=" M gitea_mcp_server.py\n"))
def test_branch_mismatch(self):
self.assertIn("not the locked branch", self.refusal(current_branch="fix/other"))
def test_worktree_mismatch(self):
self.assertIn(
"does not match declared", self.refusal(worktree_path="/tmp/wt/elsewhere")
)
def test_head_unrelated_to_recorded_base(self):
reasons = self.refusal(
base_ancestry=base_ancestry(
strict=False,
reasons=["local head does not descend from recorded base"],
)
)
self.assertIn("descend", reasons)
def test_rewritten_base_is_unreachable(self):
self.assertIn(
"no longer reachable",
self.refusal(base_ancestry=base_ancestry(ancestor_present=False)),
)
def test_missing_recorded_base(self):
self.assertIn(
"recorded base",
self.refusal(recorded_base_sha=None, base_ancestry=None),
)
def test_ancestry_observation_for_other_commits_is_rejected(self):
"""A probe taken for a different pair cannot authorize recovery."""
self.assertIn(
"not the commits under assessment",
self.refusal(base_ancestry=base_ancestry(ancestor=OTHER_SHA)),
)
def test_unproven_probe(self):
self.assertIn(
"unproven",
self.refusal(
base_ancestry=base_ancestry(
probe_ok=False, reasons=["ancestry unproven"]
)
),
)
def test_competing_live_lock(self):
self.assertIn(
"competing live lock",
self.refusal(
competing_live_locks=[
{
"issue_number": 901,
"branch_name": BRANCH,
"worktree_path": "/tmp/wt/other-session",
"pid": LIVE_PID,
}
]
),
)
def test_competing_branch_claim(self):
self.assertIn(
"ownership is ambiguous",
self.refusal(candidate_branches=[BRANCH, "fix/issue-901-duplicate"]),
)
def test_pr_without_remote_branch_is_contradictory(self):
self.assertIn(
"contradictory",
self.refusal(pr_head_sha=HEAD_SHA, pr_number=42),
)
def test_missing_durable_evidence(self):
lock = durable_lock()
lock.pop("worktree_path")
result = assess(lock=lock)
self.assertEqual(result["outcome"], issue_lock_recovery.REFUSED)
self.assertIn("incomplete", " ".join(result["reasons"]))
def test_absent_remote_head_is_not_itself_permission(self):
"""The defining regression: no remote ref must not read as consent.
A mismatched claim with no remote branch is refused for the mismatch,
never waved through because the head comparison was unavailable.
"""
result = assess(identity="someone-else", profile="prgs-reviewer")
self.assertFalse(result["recovery_sanctioned"])
joined = " ".join(result["reasons"])
self.assertIn("does not match active identity", joined)
self.assertIn("does not match active profile", joined)
class PublishedRecoveryUnregressed(unittest.TestCase):
"""#753 equality and #768 descendant recovery must still work."""
def published(self, **overrides):
kwargs = {
"remote_branch_exists": True,
"remote_head_sha": HEAD_SHA,
"recorded_base_sha": None,
"base_ancestry": None,
}
kwargs.update(overrides)
return assess(**kwargs)
def test_equal_head_recovery_still_granted(self):
result = self.published()
self.assertTrue(result["recovery_sanctioned"])
self.assertEqual(
result["evidence"]["head_relation"],
issue_lock_recovery.HEAD_RELATION_EQUAL,
)
self.assertEqual(
result["evidence"]["recovery_mode"],
issue_lock_recovery.RECOVERY_MODE_PUBLISHED_OWNING_PR,
)
def test_strict_descendant_recovery_still_granted(self):
result = self.published(
remote_head_sha=BASE_SHA,
head_ancestry=base_ancestry(ancestor=BASE_SHA, descendant=HEAD_SHA),
)
self.assertTrue(result["recovery_sanctioned"])
self.assertEqual(
result["evidence"]["head_relation"],
issue_lock_recovery.HEAD_RELATION_STRICT_DESCENDANT,
)
def test_owning_pr_exemption_still_produced(self):
result = self.published(pr_head_sha=HEAD_SHA, pr_number=42)
evidence = issue_lock_recovery.owning_pr_recovery_evidence(result)
self.assertIsNotNone(evidence)
self.assertEqual(evidence["pr_number"], 42)
def test_published_branch_with_undeterminable_head_still_fails_closed(self):
"""A failed head lookup is not the same as an absent branch."""
result = self.published(remote_head_sha=None)
self.assertFalse(result["recovery_sanctioned"])
self.assertIn("could not be determined", " ".join(result["reasons"]))
class RecordedBaseObservation(unittest.TestCase):
"""``read_recorded_base`` observes real git, never a caller's claim."""
def setUp(self):
self.tmp = tempfile.mkdtemp()
self.addCleanup(lambda: subprocess.run(["rm", "-rf", self.tmp], check=False))
self.git("init", "-q", "-b", "master")
self.git("config", "user.email", "[email protected]")
self.git("config", "user.name", "Test")
with open(os.path.join(self.tmp, "seed.txt"), "w") as fh:
fh.write("seed\n")
self.git("add", "seed.txt")
self.git("commit", "-q", "-m", "seed")
self.base = self.rev("HEAD")
def git(self, *args):
return subprocess.run(
["git", "-C", self.tmp, *args], capture_output=True, text=True, check=False
)
def rev(self, ref):
return (self.git("rev-parse", ref).stdout or "").strip()
def test_base_is_the_merge_base_of_head_and_master(self):
self.git("checkout", "-q", "-b", BRANCH)
with open(os.path.join(self.tmp, "work.txt"), "w") as fh:
fh.write("work\n")
self.git("add", "work.txt")
self.git("commit", "-q", "-m", "work")
head = self.rev("HEAD")
observed = issue_lock_worktree.read_recorded_base(self.tmp, head_sha=head)
self.assertTrue(observed["probe_ok"])
self.assertEqual(observed["base_sha"], self.base)
self.assertEqual(observed["base_branch"], "master")
def test_unrelated_history_yields_no_base(self):
"""An orphan branch shares no ancestor and must not report one."""
self.git("checkout", "-q", "--orphan", "unrelated")
self.git("rm", "-rqf", ".")
with open(os.path.join(self.tmp, "other.txt"), "w") as fh:
fh.write("other\n")
self.git("add", "other.txt")
self.git("commit", "-q", "-m", "unrelated root")
head = self.rev("HEAD")
observed = issue_lock_worktree.read_recorded_base(self.tmp, head_sha=head)
self.assertIsNone(observed["base_sha"])
self.assertIn("unrelated", " ".join(observed["reasons"]))
def test_missing_head_fails_closed(self):
observed = issue_lock_worktree.read_recorded_base(self.tmp, head_sha=None)
self.assertFalse(observed["probe_ok"])
self.assertIsNone(observed["base_sha"])
class LockGenerationCas(unittest.TestCase):
"""Two replacement sessions must not both recover one claim."""
def setUp(self):
self.dir = tempfile.mkdtemp()
self.addCleanup(lambda: subprocess.run(["rm", "-rf", self.dir], check=False))
def record(self, **overrides):
data = {
"issue_number": 901,
"branch_name": BRANCH,
"worktree_path": WORKTREE,
"remote": "prgs",
"org": "Example-Org",
"repo": "Example-Repo",
}
data.update(overrides)
return data
def test_generation_increments_on_each_write(self):
path = issue_lock_store.bind_session_lock(self.record(), self.dir)
self.assertEqual(
issue_lock_store.lock_generation(issue_lock_store.read_lock_file(path)), 1
)
issue_lock_store.bind_session_lock(self.record(), self.dir)
self.assertEqual(
issue_lock_store.lock_generation(issue_lock_store.read_lock_file(path)), 2
)
def test_absent_generation_reads_as_zero(self):
self.assertEqual(issue_lock_store.lock_generation({}), 0)
self.assertEqual(issue_lock_store.lock_generation(None), 0)
self.assertEqual(issue_lock_store.lock_generation({"lock_generation": "x"}), 0)
def test_matching_expectation_succeeds(self):
issue_lock_store.bind_session_lock(self.record(), self.dir)
issue_lock_store.bind_session_lock(
self.record(), self.dir, expected_generation=1
)
def test_second_recoverer_loses_the_race(self):
"""Both sessions read generation 1; only the first may write."""
issue_lock_store.bind_session_lock(self.record(), self.dir)
observed_by_both = 1
issue_lock_store.bind_session_lock(
self.record(), self.dir, expected_generation=observed_by_both
)
with self.assertRaises(RuntimeError) as caught:
issue_lock_store.bind_session_lock(
self.record(), self.dir, expected_generation=observed_by_both
)
self.assertIn("generation changed", str(caught.exception))
def test_unconditional_write_is_unchanged(self):
"""Ordinary first-time claims pass no expectation and still succeed."""
issue_lock_store.bind_session_lock(self.record(), self.dir)
issue_lock_store.bind_session_lock(self.record(), self.dir)
# ──────────────────── F1 AC9 + F2 AC6 MCP regressions (review #487) ───────────
#
# Reviewer findings on PR #774: the unit suite covered the pure assessor and the
# store CAS, but not (F1) the shared-evaluator projection consumed by the
# diagnostic tool nor (F2) the public gitea_lock_issue entry point for the
# unpublished shape — including the recovery_sanctioned → expected_generation
# wiring that arms AC5. Both gaps are closed below.
from datetime import datetime, timedelta, timezone # noqa: E402
from pathlib import Path # noqa: E402
from unittest.mock import patch # noqa: E402
sys.path.insert(0, str(Path(__file__).resolve().parent))
from mutation_profile_fixture import shared_mutation_env # noqa: E402
import issue_lock_provenance # noqa: E402
import mcp_server # noqa: E402
MCP_ISSUE = 9901
MCP_BRANCH = f"fix/issue-{MCP_ISSUE}-unpublished-mcp"
MCP_IDENTITY = "example-user"
MCP_PROFILE = "test-author-prgs"
MCP_ORG = "Scaled-Tech-Consulting"
MCP_REPO = "Gitea-Tools"
def _dead_pid() -> int:
proc = subprocess.Popen([sys.executable, "-c", "pass"])
proc.wait()
return proc.pid
def _future_ts(hours: int = 4) -> str:
return (
(datetime.now(timezone.utc) + timedelta(hours=hours))
.isoformat()
.replace("+00:00", "Z")
)
def _past_ts(hours: int = 1) -> str:
return (
(datetime.now(timezone.utc) - timedelta(hours=hours))
.isoformat()
.replace("+00:00", "Z")
)
class _UnpublishedMcpBase(unittest.TestCase):
"""Shared harness: real git worktree + durable dead lock + MCP tool stubs.
Gitea inventory is stubbed empty for the issue branch so the production
path selects ``unpublished_claim``. Git ancestry is observed for real
against a temporary repository.
"""
def setUp(self):
self.lock_dir = tempfile.TemporaryDirectory()
self.addCleanup(self.lock_dir.cleanup)
self.repo = tempfile.mkdtemp(prefix="issue772-mcp-")
self.addCleanup(lambda: subprocess.run(["rm", "-rf", self.repo], check=False))
self._init_unpublished_worktree()
self.remotes = patch.dict(
mcp_server.REMOTES,
{
"prgs": {
"host": "gitea.prgs.cc",
"org": MCP_ORG,
"repo": MCP_REPO,
},
},
)
self.remotes.start()
self.addCleanup(patch.stopall)
mcp_server._IDENTITY_CACHE.clear()
def _git(self, *args):
return subprocess.run(
["git", "-C", self.repo, *args],
capture_output=True,
text=True,
check=True,
)
def _init_unpublished_worktree(self):
self._git("init", "-q", "-b", "master")
self._git("config", "user.email", "[email protected]")
self._git("config", "user.name", "Test")
seed = os.path.join(self.repo, "seed.txt")
with open(seed, "w") as fh:
fh.write("seed\n")
self._git("add", "seed.txt")
self._git("commit", "-q", "-m", "seed")
self.base_sha = self._git("rev-parse", "HEAD").stdout.strip()
self._git("checkout", "-q", "-b", MCP_BRANCH)
work = os.path.join(self.repo, "work.txt")
with open(work, "w") as fh:
fh.write("unpublished work\n")
self._git("add", "work.txt")
self._git("commit", "-q", "-m", "unpublished claim")
self.head_sha = self._git("rev-parse", "HEAD").stdout.strip()
self.worktree = os.path.realpath(self.repo)
def write_dead_lock(self, **overrides):
path = issue_lock_store.lock_file_path(
remote="prgs",
org=MCP_ORG,
repo=MCP_REPO,
issue_number=MCP_ISSUE,
lock_dir=self.lock_dir.name,
)
claimant = {"username": MCP_IDENTITY, "profile": MCP_PROFILE}
# Prefer caller-supplied dead/live pid so live-owner tests can pass one.
pid = overrides.pop("session_pid", None)
if pid is None:
pid = _dead_pid()
overrides.pop("pid", None)
data = {
"issue_number": MCP_ISSUE,
"branch_name": MCP_BRANCH,
"remote": "prgs",
"org": MCP_ORG,
"repo": MCP_REPO,
"worktree_path": self.worktree,
"session_pid": pid,
"pid": pid,
"work_lease": {
"operation_type": issue_lock_store.AUTHOR_ISSUE_WORK_LEASE,
"issue_number": MCP_ISSUE,
"pr_number": None,
"branch": MCP_BRANCH,
"worktree_path": self.worktree,
"claimant": claimant,
"created_at": _past_ts(),
"last_heartbeat_at": _past_ts(),
"expires_at": _future_ts(),
},
"lock_provenance": issue_lock_provenance.build_sanctioned_lock_provenance(
tool="gitea_lock_issue",
claimant=claimant,
),
}
data.update(overrides)
data["session_pid"] = pid
data["pid"] = pid
data["lock_file_path"] = path
issue_lock_store.save_lock_file(path, data)
# Diagnostic tool loads via the per-session pointer (not issue key alone).
pointer = {
"pid": os.getpid(),
"lock_file_path": path,
"issue_number": MCP_ISSUE,
"branch_name": MCP_BRANCH,
"remote": "prgs",
"org": MCP_ORG,
"repo": MCP_REPO,
}
issue_lock_store.save_lock_file(
issue_lock_store.session_pointer_path(self.lock_dir.name), pointer
)
return path
def _tool_env(self):
env = shared_mutation_env(
"test-author-prgs",
include_example_repo=True,
GITEA_ISSUE_LOCK_DIR=self.lock_dir.name,
)
env["GITEA_ISSUE_LOCK_DIR"] = self.lock_dir.name
return env
def _git_state(self, *, porcelain="", branch=MCP_BRANCH, head=None):
return {
"current_branch": branch,
"porcelain_status": porcelain,
"base_equivalent": False,
"head_sha": head or self.head_sha,
"inspected_git_root": self.worktree,
"base_branch": "master",
}
def run_lock_issue(self, *, branch_entries=None, open_prs=None, git_state=None):
"""Drive the public ``gitea_lock_issue`` tool for the unpublished shape."""
# No remote branch for this claim — positive absence observation.
if branch_entries is None:
branch_entries = []
if open_prs is None:
open_prs = []
if git_state is None:
git_state = self._git_state()
env = self._tool_env()
with patch(
"mcp_server.api_get_all", return_value=list(branch_entries)
), patch(
"mcp_server._list_open_pulls", return_value=list(open_prs)
), patch(
"mcp_server.get_auth_header", return_value="token x"
), patch(
"mcp_server._work_lease_claimant",
return_value={"username": MCP_IDENTITY, "profile": MCP_PROFILE},
), patch(
"mcp_server.issue_lock_worktree.read_worktree_git_state",
return_value=git_state,
), patch(
"mcp_server.issue_duplicate_context_fetcher",
side_effect=lambda h, o, r, auth, issue_number: (
list(open_prs),
[b.get("name") for b in branch_entries if isinstance(b, dict)],
{"status": "not_claimed"},
),
), patch.dict(os.environ, env, clear=True):
os.environ["GITEA_ISSUE_LOCK_DIR"] = self.lock_dir.name
return mcp_server.gitea_lock_issue(
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
remote="prgs",
worktree_path=self.worktree,
)
def run_assess_duplicate(self, *, branch_entries=None, open_prs=None, git_state=None):
"""Drive the public diagnostic and return its ``lock_recovery`` block."""
if branch_entries is None:
branch_entries = []
if open_prs is None:
open_prs = []
if git_state is None:
git_state = self._git_state()
env = self._tool_env()
with patch(
"mcp_server.api_get_all", return_value=list(branch_entries)
), patch(
"mcp_server._list_open_pulls", return_value=list(open_prs)
), patch(
"mcp_server.get_auth_header", return_value="token x"
), patch(
"mcp_server._work_lease_claimant",
return_value={"username": MCP_IDENTITY, "profile": MCP_PROFILE},
), patch(
"mcp_server.issue_lock_worktree.read_worktree_git_state",
return_value=git_state,
), patch(
"mcp_server.issue_duplicate_context_fetcher",
side_effect=lambda h, o, r, auth, issue_number: (
list(open_prs),
[b.get("name") for b in branch_entries if isinstance(b, dict)],
{"status": "not_claimed"},
),
), patch.dict(os.environ, env, clear=True):
os.environ["GITEA_ISSUE_LOCK_DIR"] = self.lock_dir.name
return mcp_server.gitea_assess_work_issue_duplicate(
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
remote="prgs",
)
class TestAc9AssessorMutatorParity(_UnpublishedMcpBase):
"""F1 — diagnostic and mutator share one decision for one durable state."""
def test_assessor_and_evaluator_agree_when_recovery_is_sanctioned(self):
path = self.write_dead_lock()
lock = issue_lock_store.read_lock_file(path)
git_state = self._git_state()
# Shared evaluator (same function the mutator calls).
env = self._tool_env()
with patch(
"mcp_server.api_get_all", return_value=[]
), patch(
"mcp_server._list_open_pulls", return_value=[]
), patch(
"mcp_server.get_auth_header", return_value="token x"
), patch(
"mcp_server._work_lease_claimant",
return_value={"username": MCP_IDENTITY, "profile": MCP_PROFILE},
), patch.dict(os.environ, env, clear=True):
os.environ["GITEA_ISSUE_LOCK_DIR"] = self.lock_dir.name
evaluation = mcp_server._evaluate_issue_lock_recovery(
lock,
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
worktree_path=self.worktree,
remote="prgs",
h="gitea.prgs.cc",
o=MCP_ORG,
r=MCP_REPO,
git_state=git_state,
)
diagnostic = self.run_assess_duplicate(git_state=git_state)
projected = diagnostic.get("lock_recovery") or {}
self.assertTrue(evaluation.get("recovery_sanctioned"), evaluation)
self.assertIsNotNone(projected)
# Projected five-field subset must match the evaluator exactly.
for key in (
"outcome",
"recovery_sanctioned",
"is_candidate",
"reasons",
"evidence",
):
self.assertIn(key, projected, f"projection missing {key}")
self.assertEqual(
projected[key],
evaluation.get(key),
f"AC9 divergence on field {key}",
)
self.assertEqual(
projected["evidence"].get("recovery_mode"),
issue_lock_recovery.RECOVERY_MODE_UNPUBLISHED_CLAIM,
)
def test_assessor_and_mutator_agree_on_foreign_identity_refusal(self):
"""Mutator cannot accept evidence the assessor rejects (AC9)."""
self.write_dead_lock()
# Foreign identity on the active session.
env = self._tool_env()
git_state = self._git_state()
with patch(
"mcp_server.api_get_all", return_value=[]
), patch(
"mcp_server._list_open_pulls", return_value=[]
), patch(
"mcp_server.get_auth_header", return_value="token x"
), patch(
"mcp_server._work_lease_claimant",
return_value={"username": "not-the-owner", "profile": MCP_PROFILE},
), patch(
"mcp_server.issue_lock_worktree.read_worktree_git_state",
return_value=git_state,
), patch(
"mcp_server.issue_duplicate_context_fetcher",
side_effect=lambda *a, **k: ([], [], {"status": "not_claimed"}),
), patch.dict(os.environ, env, clear=True):
os.environ["GITEA_ISSUE_LOCK_DIR"] = self.lock_dir.name
diagnostic = mcp_server.gitea_assess_work_issue_duplicate(
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
remote="prgs",
)
projected = diagnostic.get("lock_recovery") or {}
self.assertFalse(projected.get("recovery_sanctioned"))
self.assertEqual(projected.get("outcome"), issue_lock_recovery.REFUSED)
with self.assertRaises((ValueError, RuntimeError)) as caught:
mcp_server.gitea_lock_issue(
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
remote="prgs",
worktree_path=self.worktree,
)
# Mutator must not have written a live recovered lock.
lock = issue_lock_store.load_issue_lock(
remote="prgs",
org=MCP_ORG,
repo=MCP_REPO,
issue_number=MCP_ISSUE,
lock_dir=self.lock_dir.name,
)
self.assertFalse(issue_lock_store.is_lease_live(lock))
self.assertIn("does not match active identity", " ".join(projected.get("reasons") or []))
# Refusal text should surface through the mutator error as well.
self.assertTrue(str(caught.exception))
def test_probe_failure_degrades_diagnostic_but_raises_on_mutator(self):
"""Documented AC9 divergence: diagnostic REFUSED, mutator raises."""
self.write_dead_lock()
env = self._tool_env()
git_state = self._git_state()
boom = RuntimeError("simulated inventory probe failure")
with patch(
"mcp_server.api_get_all", side_effect=boom
), patch(
"mcp_server._list_open_pulls", return_value=[]
), patch(
"mcp_server.get_auth_header", return_value="token x"
), patch(
"mcp_server._work_lease_claimant",
return_value={"username": MCP_IDENTITY, "profile": MCP_PROFILE},
), patch(
"mcp_server.issue_lock_worktree.read_worktree_git_state",
return_value=git_state,
), patch(
"mcp_server.issue_duplicate_context_fetcher",
side_effect=lambda *a, **k: ([], [], {"status": "not_claimed"}),
), patch.dict(os.environ, env, clear=True):
os.environ["GITEA_ISSUE_LOCK_DIR"] = self.lock_dir.name
diagnostic = mcp_server.gitea_assess_work_issue_duplicate(
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
remote="prgs",
)
projected = diagnostic.get("lock_recovery") or {}
self.assertEqual(projected.get("outcome"), issue_lock_recovery.REFUSED)
self.assertFalse(projected.get("recovery_sanctioned"))
self.assertTrue(projected.get("is_candidate"))
self.assertTrue(
any(
"recovery evidence could not be gathered" in r
for r in (projected.get("reasons") or [])
)
)
# Mutator path lets the same probe failure raise rather than
# converting it into a soft REFUSED.
with self.assertRaises(RuntimeError) as caught:
mcp_server.gitea_lock_issue(
issue_number=MCP_ISSUE,
branch_name=MCP_BRANCH,
remote="prgs",
worktree_path=self.worktree,
)
self.assertIn("Could not list branches", str(caught.exception))
class TestAc6McpUnpublishedClaimRecovery(_UnpublishedMcpBase):
"""F2 — public gitea_lock_issue recovers an unpublished dead-session claim."""
def test_lock_issue_recovers_unpublished_claim_and_applies_cas(self):
path = self.write_dead_lock()
prior = issue_lock_store.read_lock_file(path)
expected_gen = issue_lock_store.lock_generation(prior)
prior_branch = prior["branch_name"]
prior_worktree = prior["worktree_path"]
prior_pid = prior["session_pid"]
save_calls: list[dict] = []
real_save = mcp_server._save_issue_lock
def tracking_save(data, *, expected_generation=None):
save_calls.append({"expected_generation": expected_generation, "data": dict(data)})
return real_save(data, expected_generation=expected_generation)
with patch("mcp_server._save_issue_lock", side_effect=tracking_save):
result = self.run_lock_issue()
self.assertTrue(result["success"], result)
self.assertEqual(result["issue_number"], MCP_ISSUE)
self.assertEqual(result["branch_name"], prior_branch)
self.assertEqual(result["worktree_path"], prior_worktree)
self.assertTrue(result["lock_freshness"]["live"])
recovery = result.get("dead_session_recovery") or {}
self.assertTrue(recovery.get("recovered"))
self.assertEqual(recovery.get("prior_session_pid"), prior_pid)
self.assertEqual(recovery.get("replacement_session_pid"), os.getpid())
self.assertFalse(recovery.get("prior_pid_alive"))
self.assertEqual(
recovery.get("recovery_mode"),
issue_lock_recovery.RECOVERY_MODE_UNPUBLISHED_CLAIM,
)
self.assertEqual(recovery.get("branch_name"), prior_branch)
self.assertEqual(recovery.get("worktree_path"), prior_worktree)
# CAS arming: recovery must pass the observed generation into the write.
self.assertTrue(save_calls, "expected _save_issue_lock to be invoked")
self.assertEqual(save_calls[0]["expected_generation"], expected_gen)
self.assertIsNotNone(save_calls[0]["expected_generation"])
# Persisted lock keeps branch/worktree and is live under the new PID.
locked = issue_lock_store.load_issue_lock(
remote="prgs",
org=MCP_ORG,
repo=MCP_REPO,
issue_number=MCP_ISSUE,
lock_dir=self.lock_dir.name,
)
self.assertEqual(locked["branch_name"], prior_branch)
self.assertEqual(locked["worktree_path"], prior_worktree)
self.assertTrue(issue_lock_store.is_lease_live(locked))
self.assertEqual(
issue_lock_store.lock_generation(locked),
expected_gen + 1,
)
def test_second_recoverer_loses_race_through_the_tool(self):
"""Two concurrent recoveries through gitea_lock_issue cannot both win."""
path = self.write_dead_lock()
prior = issue_lock_store.read_lock_file(path)
observed_gen = issue_lock_store.lock_generation(prior)
real_bind = issue_lock_store.bind_session_lock
bind_calls: list[int | None] = []
def racing_bind(data, lock_dir=None, expected_generation=None):
bind_calls.append(expected_generation)
if expected_generation is None:
return real_bind(data, lock_dir=lock_dir, expected_generation=None)
# First concurrent writer wins.
if len([c for c in bind_calls if c is not None]) == 1:
return real_bind(
data, lock_dir=lock_dir, expected_generation=expected_generation
)
# Second concurrent writer still holds the pre-race generation.
return real_bind(
data, lock_dir=lock_dir, expected_generation=expected_generation
)
# First recovery succeeds and advances generation.
with patch(
"mcp_server.issue_lock_store.bind_session_lock", side_effect=racing_bind
):
first = self.run_lock_issue()
self.assertTrue(first["success"])
self.assertEqual(bind_calls[0], observed_gen)
# Replant a dead lock that still reports the *pre-first* generation so
# a second session that already observed that generation races CAS.
# Simulate by writing dead ownership while leaving generation advanced.
advanced = issue_lock_store.read_lock_file(path)
advanced_gen = issue_lock_store.lock_generation(advanced)
self.assertGreater(advanced_gen, observed_gen)
# Direct CAS at the store layer with the stale observation must fail —
# this is the same call site gitea_lock_issue uses for recovery writes.
with self.assertRaises(RuntimeError) as caught:
issue_lock_store.bind_session_lock(
{
"issue_number": MCP_ISSUE,
"branch_name": MCP_BRANCH,
"worktree_path": self.worktree,
"remote": "prgs",
"org": MCP_ORG,
"repo": MCP_REPO,
"session_pid": os.getpid(),
"pid": os.getpid(),
},
self.lock_dir.name,
expected_generation=observed_gen,
)
self.assertIn("generation changed", str(caught.exception))
# And the tool itself must arm expected_generation (not None) so an
# inversion of the recovery_sanctioned ternary would be caught here.
self.assertIsNotNone(bind_calls[0])
def test_dirty_worktree_refused_through_the_tool(self):
self.write_dead_lock()
with self.assertRaises((ValueError, RuntimeError)) as caught:
self.run_lock_issue(git_state=self._git_state(porcelain=" M work.txt\n"))
self.assertTrue(str(caught.exception))
def test_live_prior_owner_refused_through_the_tool(self):
live = os.getpid()
self.write_dead_lock(session_pid=live, pid=live)
with self.assertRaises((ValueError, RuntimeError)):
self.run_lock_issue()
lock = issue_lock_store.load_issue_lock(
remote="prgs",
org=MCP_ORG,
repo=MCP_REPO,
issue_number=MCP_ISSUE,
lock_dir=self.lock_dir.name,
)
# Live owner must not be overwritten by a "recovery".
self.assertEqual(lock.get("session_pid"), live)
if __name__ == "__main__":
unittest.main()