Files
orchestrator/tests/test_orch073_pr_classify.py
claude-bot aff334e82b fix(merge-gate): SHA-in-main as sole merge-verify criterion + main regression guard
Root-cause fix for main erosion (phantom merge): code of ORCH-067/069 reached
`done` while absent from origin/main (only their auto docs-PRs landed).

- FR-1: verify_merged_to_main confirms merge ONLY by `git merge-base
  --is-ancestor <validated_sha> origin/main`; the OR-branch pr_already_merged is
  removed (a merged PR no longer confirms). Empty SHA / git error -> False.
- FR-2: pr_already_merged demoted to merge_pr idempotency-guard; counts a PR only
  when merged & head.ref==<branch> & base.ref=="main" (explicit in-loop filter).
- FR-3: merge_pr selects the open code-PR by head==<branch> AND base==main.
- FR-5: new deterministic check_main_regression in _handle_merge_verify (after
  confirmed SHA-in-main, before done) verifies MAIN_REGRESSION_MARKERS still in
  origin/main; deterministic count==0 -> alert "main regressed" + HOLD (NOT done,
  no rollback); git error of the grep -> fail-open. Kill-switch
  ORCH_REGRESSION_GUARD_ENABLED; non-self -> no-op.
- FR-4: root .gitattributes `CHANGELOG.md merge=union` so Unreleased edits
  auto-merge on rebase without conflict (branch not rolled back).

Invariants unchanged (STAGE_TRANSITIONS, QG_CHECKS, deploy-status, merge-gate,
image-freshness, DB schema, external HTTP API); non-self repos no-op (INV-5);
never-raise (INV-1); merge only via Gitea PR-API (INV-2).

Docs: CHANGELOG, .env.example (README/ADR updated by architect). Tests:
tests/test_orch073_*.py (TC-01..18); existing merge-gate tests updated for the
new code-PR filter.

Refs: ORCH-073

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-06-08 16:30:46 +03:00

79 lines
3.1 KiB
Python

"""ORCH-073 FR-2 — pr_already_merged distinguishes code-PR from docs-PR.
Covers TC-05..07. pr_already_merged is now an idempotency-guard: it counts a PR as
"merged" ONLY when it carries the code of THIS feature-branch into main
(merged & head.ref==branch & base.ref=="main"), excluding auto docs-PRs. Gitea HTTP
is mocked; never-raise -> False (INV-1).
"""
import httpx
import pytest
from src import merge_gate
BRANCH = "feature/ORCH-073-x"
class _Resp:
def __init__(self, status_code, payload=None):
self.status_code = status_code
self._payload = payload if payload is not None else []
def json(self):
return self._payload
@pytest.fixture(autouse=True)
def _settings(monkeypatch):
monkeypatch.setattr(merge_gate.settings, "gitea_url", "http://gitea.test")
monkeypatch.setattr(merge_gate.settings, "gitea_owner", "admin")
monkeypatch.setattr(merge_gate.settings, "gitea_token", "tok")
# ---------------------------------------------------------------------------
# TC-05: a merged docs-PR (head=docs/*, base=main) is NOT counted as code-merge.
# ---------------------------------------------------------------------------
def test_tc05_merged_docs_pr_not_counted(monkeypatch):
payload = [
{"merged": True, "head": {"ref": "docs/ORCH-073-staging-log"}, "base": {"ref": "main"}},
{"merged": False, "head": {"ref": BRANCH}, "base": {"ref": "main"}},
]
monkeypatch.setattr(httpx, "get", lambda *a, **k: _Resp(200, payload))
assert merge_gate.pr_already_merged("orchestrator", BRANCH) is False
# ---------------------------------------------------------------------------
# TC-06: a merged code-PR (head==branch, base==main) IS recognised.
# ---------------------------------------------------------------------------
def test_tc06_merged_code_pr_recognised(monkeypatch):
payload = [
{"merged": True, "head": {"ref": BRANCH}, "base": {"ref": "main"}},
]
monkeypatch.setattr(httpx, "get", lambda *a, **k: _Resp(200, payload))
assert merge_gate.pr_already_merged("orchestrator", BRANCH) is True
def test_tc06_merged_code_pr_onto_non_main_base_not_counted(monkeypatch):
# Right head but a foreign base (not main) must NOT count.
payload = [
{"merged": True, "head": {"ref": BRANCH}, "base": {"ref": "develop"}},
]
monkeypatch.setattr(httpx, "get", lambda *a, **k: _Resp(200, payload))
assert merge_gate.pr_already_merged("orchestrator", BRANCH) is False
# ---------------------------------------------------------------------------
# TC-07: HTTP error / non-200 -> False (never-raise, conservative).
# ---------------------------------------------------------------------------
def test_tc07_non_200_is_false(monkeypatch):
monkeypatch.setattr(httpx, "get", lambda *a, **k: _Resp(500, []))
assert merge_gate.pr_already_merged("orchestrator", BRANCH) is False
def test_tc07_http_exception_is_false(monkeypatch):
def boom(*a, **k):
raise httpx.ConnectError("gitea unreachable")
monkeypatch.setattr(httpx, "get", boom)
assert merge_gate.pr_already_merged("orchestrator", BRANCH) is False