Files
simple/pysim_simple_server/test_scripts.py
T
catarrh 152878062f v3.18.2: review fixes - sticky event-JSON error, store keep-on-load, write queue
The four findings from the review of the 3.15-3.18 batch:

- The event step's `_eventFieldsError` flag is cleared at the start of each
  collect: fixing malformed JSON used to leave the save refused until the
  editor was closed and reopened.  Regression test covers invalid -> fixed.
- The script store keeps an entry that no longer validates on load (a
  tightened engine rule or a hand edit): it is served, fails at run start with
  the validator's message and can be fixed in the editor, instead of being
  dropped from memory and erased by the next save.  Mutation paths still
  refuse it.  (The presets store already had this behaviour.)
- Writebacks are serialized per script (`_testWriteChains`): two quick saves
  of an unsaved draft no longer create two server-side scripts - the window
  could be minutes while a RAM operation holds the card lock.  Regression
  test asserts one create + one update.
- Deleting a script cancels its pending debounced save and marks it deleted,
  so a queued writeback never resurrects it; a create already in flight is
  undone with a delete.  Regression test covers the pending-save case.
- The event vectors moved to a shared fixture
  (frontend/tests/event_vectors.json) asserted by BOTH suites - a one-sided
  builder change now fails the other suite instead of drifting silently.

Tests: 816 frontend + 716 Python; sw cache simple-v383.
2026-10-04 18:27:04 +03:00

298 lines
12 KiB
Python

"""Server-side test script store: the card test scripts the runner executes.
Test scripts used to live in the browser's localStorage, although the runner
that executes them is server-side - the store makes the bench state one unit
(next to the card presets), lets every browser (or a plain API client) manage
the same set, and validates a script before it is saved, so what is stored is
what the runner accepts. A load keeps an entry that no longer validates - a
tightened rule (or a hand edit) must never destroy a stored script; it is
served, fails at run start with the validator's message, and can be fixed in
the editor, while the next save rewrites the file with it intact.
A stored script is the script JSON (``name`` + ``steps``, the same shape the
PWA exports) plus a stable uuid and timestamps::
{"version": 1, "scripts": [
{"id": "...", "name": "applet RFM update", "steps": [...],
"created": 1690000000.0, "updated": 1690000000.0}]}
Validation runs on every mutation: the basic shape always, and - when the
server passes its ``validator`` - the full ``testscript.normalise_script``
pass (the same one the runner uses at start). Import accepts the old
localStorage shape (an array of ``{name, steps}``); there is no automatic
migration - export/import is the path.
Layout (``--test-scripts`` overrides the file; ``Path.home()`` resolves the
same way on Linux, macOS and Windows)::
~/.pysim-simple-server/test_scripts.json
Writes are atomic (temp file + fsync + ``os.replace``) and every mutation
holds an ``RLock``. Scripts carry a stable uuid - never array indices.
"""
import copy
import json
import os
import re
import sys
import tempfile
import threading
import time
import uuid
from pathlib import Path
DEFAULT_DIR = '.pysim-simple-server'
DEFAULT_FILENAME = 'test_scripts.json'
SCHEMA_VERSION = 1
def default_path():
"""The default store: ``~/.pysim-simple-server/test_scripts.json``."""
return Path.home() / DEFAULT_DIR / DEFAULT_FILENAME
class TestScriptError(Exception):
"""A refused mutation (validation, unknown id, ...)."""
class TestScriptStore:
"""The test script store. All public methods are thread-safe and return
copies - callers can never mutate the store's own state."""
def __init__(self, path=None, validator=None):
self.path = Path(path) if path else default_path()
self._validator = validator
self._lock = threading.RLock()
self._scripts = []
self._load()
# ------------------------------------------------------------------ disk
def _load(self):
try:
raw = self.path.read_text(encoding='utf-8')
except FileNotFoundError:
self._scripts = []
return
except OSError as e:
sys.stderr.write('TESTSCRIPTS: cannot read %s: %s\n' % (self.path, e))
self._scripts = []
return
try:
data = json.loads(raw)
except ValueError as e:
# Never silently overwrite an unreadable store: keep the file for
# the user, start empty (the next save would destroy it).
bad = self.path.with_name(self.path.name + '.bad-%s'
% time.strftime('%Y%m%d-%H%M%S'))
try:
self.path.replace(bad)
sys.stderr.write('TESTSCRIPTS: %s is not valid JSON (%s) - kept as '
'%s, starting empty\n' % (self.path, e, bad))
except OSError:
sys.stderr.write('TESTSCRIPTS: %s is not valid JSON (%s)\n'
% (self.path, e))
self._scripts = []
return
items = data.get('scripts') if isinstance(data, dict) else None
if not isinstance(items, list):
items = []
loaded = []
for entry in items:
try:
s = self._normalise(entry, keep_meta=True, validate=False)
except TestScriptError as e:
sys.stderr.write('TESTSCRIPTS: dropping an unreadable entry: %s\n' % e)
continue
if self._validator is not None:
try:
self._validator(copy.deepcopy({'name': s['name'],
'steps': s['steps']}))
except Exception as e:
# Keep it: a tightened rule (or a hand edit) must never
# destroy a stored script - it is served, fails at run start
# with the validator's message, and can be fixed in the
# editor. A later save rewrites the file WITH this entry.
sys.stderr.write('TESTSCRIPTS: keeping %r - it does not '
'validate now: %s\n'
% (s['name'] or '(unnamed)', e))
loaded.append(s)
self._scripts = loaded
def _save(self):
data = {'version': SCHEMA_VERSION, 'scripts': self._scripts}
self.path.parent.mkdir(parents=True, exist_ok=True)
tmp_fd, tmp_name = tempfile.mkstemp(prefix=self.path.name + '.',
dir=str(self.path.parent))
try:
with os.fdopen(tmp_fd, 'w', encoding='utf-8') as fh:
json.dump(data, fh, indent=2, ensure_ascii=False)
fh.write('\n')
fh.flush()
os.fsync(fh.fileno())
os.replace(tmp_name, self.path)
except Exception:
try:
os.unlink(tmp_name)
except OSError:
pass
raise
try:
# Make the rename durable. Best effort: opening a directory is not
# portable (Windows) - a failure here never fails the mutation.
dir_fd = os.open(str(self.path.parent), os.O_RDONLY)
try:
os.fsync(dir_fd)
finally:
os.close(dir_fd)
except OSError:
pass
# ------------------------------------------------------------- shaping
def _check(self, raw, validate=True):
"""The script dict, validated: the basic shape always, the full engine
pass when a validator was provided (and ``validate`` is set - a load
keeps an entry that no longer validates, the mutation paths refuse it).
The *input* shape is kept - the engine's normalised output is not meant
to be re-normalised (it fills defaults like an 'any' PoR check), and the
runner normalises again at start, so storing what was submitted keeps
the store re-validatable and hand-editable."""
if not isinstance(raw, dict):
raise TestScriptError('script must be an object')
name = raw.get('name')
if name is None:
name = ''
if not isinstance(name, str):
raise TestScriptError('script name must be a string')
steps = raw.get('steps')
if not isinstance(steps, list) or not steps:
raise TestScriptError('script must have at least one step')
for i, step in enumerate(steps):
if not isinstance(step, dict) or step.get('type') not in ('action', 'expect'):
raise TestScriptError('step %d must be an action or an expectation'
% (i + 1))
script = {'name': name.strip(), 'steps': copy.deepcopy(steps)}
if validate and self._validator is not None:
try:
self._validator(copy.deepcopy(script))
except Exception as e:
# testscript.ScriptError is a ValueError: pass its message on
raise TestScriptError(str(e))
return script
def _normalise(self, entry, keep_meta=False, validate=True):
"""A stored entry: the validated script plus id and timestamps. With
``keep_meta`` the stored id/timestamps are preserved (a load), else
fresh ones are made (an add)."""
if not isinstance(entry, dict):
raise TestScriptError('script must be an object')
script = self._check(entry, validate=validate)
now = time.time()
rid = str(entry.get('id') or '').strip().lower()
if not re.fullmatch(r'[0-9a-f]{32}', rid):
rid = uuid.uuid4().hex
if keep_meta:
created = entry.get('created')
updated = entry.get('updated')
created = created if isinstance(created, (int, float)) else now
updated = updated if isinstance(updated, (int, float)) else created
else:
created = updated = now
return {'id': rid, 'name': script['name'], 'steps': script['steps'],
'created': created, 'updated': updated}
def _find(self, sid):
sid = str(sid or '').strip().lower()
for s in self._scripts:
if s['id'] == sid:
return s
return None
# -------------------------------------------------------------- public
def list(self):
with self._lock:
return [copy.deepcopy(s) for s in self._scripts]
def get(self, sid):
with self._lock:
s = self._find(sid)
return copy.deepcopy(s) if s else None
def add(self, script):
with self._lock:
s = self._normalise(script or {})
if self._find(s['id']):
# a caller-supplied id that is already taken never wins: ids
# must stay unique (the same guard the import uses)
s['id'] = uuid.uuid4().hex
self._scripts.append(s)
self._save()
sys.stderr.write('TESTSCRIPTS: added %s (%s)\n'
% (s['name'] or '(unnamed)', s['id']))
return copy.deepcopy(s)
def update(self, sid, fields):
"""Partial or full update: name/steps replaced, id and created kept."""
with self._lock:
cur = self._find(sid)
if cur is None:
return None
merged = {'name': cur['name'], 'steps': copy.deepcopy(cur['steps'])}
if isinstance(fields, dict):
if 'name' in fields:
merged['name'] = fields['name']
if 'steps' in fields:
merged['steps'] = fields['steps']
script = self._check(merged)
new = {'id': cur['id'], 'name': script['name'],
'steps': script['steps'], 'created': cur['created'],
'updated': time.time()}
self._scripts[self._scripts.index(cur)] = new
self._save()
return copy.deepcopy(new)
def remove(self, sid):
with self._lock:
s = self._find(sid)
if s is None:
return False
self._scripts.remove(s)
self._save()
sys.stderr.write('TESTSCRIPTS: removed %s (%s)\n'
% (s['name'] or '(unnamed)', s['id']))
return True
def import_scripts(self, items, mode='merge'):
"""Import exported (or old localStorage) scripts: entries are validated
one by one; an already-used id gets a fresh one, invalid entries are
reported instead of failing the whole import. ``replace`` wipes the
store first."""
added, skipped, errors = 0, 0, []
with self._lock:
if mode == 'replace':
self._scripts = []
for i, entry in enumerate(items or []):
if not isinstance(entry, dict):
skipped += 1
continue
try:
s = self._normalise(entry)
if self._find(s['id']):
s['id'] = uuid.uuid4().hex
except TestScriptError as e:
skipped += 1
errors.append('%s: %s' % (entry.get('name') or ('#' + str(i + 1)), e))
continue
self._scripts.append(s)
added += 1
if added or mode == 'replace':
self._save()
sys.stderr.write('TESTSCRIPTS: import %s: %d added, %d skipped\n'
% (mode, added, skipped))
return {'added': added, 'skipped': skipped, 'errors': errors[:10]}
def info(self):
with self._lock:
return {'path': str(self.path), 'count': len(self._scripts),
'version': SCHEMA_VERSION}