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Torture harness: a shared-cache lock reported as HTTP 400 is the documented P12 case

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwkLo2rJWidpkDVT3HkvNv
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Claude 2026-10-04 09:36:03 +00:00
commit 06fb75cc28
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9
tests/connection_torture.py
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@ -607,14 +607,17 @@ class Torture:
# 404: data or the database page during an external change
self.count(f"http {response.status_code} (expected)")
return
if response.status_code == 500 and (
if response.status_code in (400, 500) and (
"schema is locked" in response.text
or "table is locked" in response.text
):
# SQLITE_LOCKED from the shared-cache in-memory database: it
# does not wait for locks (documented, the same on main)
# does not wait for locks (documented, the same on main). The
# table page reports it as a 400 "Invalid SQL" (P45)
with self.lock:
self.expected_errors["http 500: shared-cache lock"] += 1
self.expected_errors[
f"http {response.status_code}: shared-cache lock"
] += 1
return
self.problem(
"http", f"GET {path} -> {response.status_code}: {response.text[:300]}"