Make the tests catch every change in thirteen files, and delete two checks that ran twice - #2110
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The chain this test builds feeds itself, and it was gated only by a flag lowered after the assertion. A mutant that stops the flush throwing made the assertion throw first, so the flag never dropped and the chain span the event loop at full CPU — one mutant hung a whole mutation run for 67 minutes before the run-wide deadline would have failed it scoreless. The flag now drops in a finally, and the chain carries its own ceiling far above the flush's round cap, so the real failure still happens first and nothing can spin forever. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
generateSuperuserPassword looped until it had enough characters, which assumes the alphabet has characters in it and that the randomness source eventually returns a usable byte. Neither is guaranteed: blanking the alphabet makes maxValidByte NaN, every byte is rejected, and the loop spins forever. That froze a mutation run for over an hour. The draws are now capped and exhaustion throws, with a test that starves the generator by handing it only bytes in the rejected tail. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
hashing.ts: nothing named the scheme a stored password hash is stamped with, and nothing pinned that the iteration count is read as a decimal number — a hand-edited hash written in hex would have verified. Both are now asserted. crypto/utils.ts: the two out-of-range code readers are recorded as equivalent. constantTimeCodesEqual seeds its fold with lengthA ^ lengthB and walks the longer sequence, so a reader is only asked past the end of one string when the lengths differ, and that seed has already decided the answer. safe-fetch.ts: only 302 was ever exercised, so four of the five redirect statuses could be dropped unnoticed. A table now walks all five, with a companion case proving a non-redirect status is left alone. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
Nothing checked where the export link points, so the address could be blanked unnoticed. Nothing checked that this page hides the check-in filter and forgets a date in the address — the two settings that tell it apart from a single listing's attendee list, which does both. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
pending-work.ts: nothing sat on the edge of the flush's round cap, so it could shrink unnoticed. The new case builds the largest chain the cap admits — each piece yielding to the event loop so one round settles one piece — and proves it still drains. listing-prices.ts: syncing exactly one listing was never exercised, so the empty-list guard could have swallowed it. The NULL unit_price fallback is recorded as equivalent: 0 is the only falsy value the column can hold, and it equals the fallback. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
Route ordering promises that sorting a route file alphabetically cannot change which route answers. Only the parameter-count half was tested, so the literal-length tie-break could be reversed, divided or short-circuited unnoticed. The new case declares the same overlapping pair both ways round and expects the same answer. Three fallbacks are recorded as equivalent: two array defaults that can only ever be missing, and the parameter placeholder, whose length cancels because the tie-break only compares routes with the same parameter count. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
The draw cap I added checked whether the password was finished at the top of each round, so a password completed on the very last allowed draw fell through to the refusal instead of being returned. It now checks after drawing, and a test drives exactly that case: every draw but the last hands back only rejected bytes. Also pinned: the credentials email says what happened in its opening line, an apostrophe in a username is escaped in the HTML body, and the account cache stays warm as time passes rather than only within the same millisecond. The cache generation's starting number is recorded as equivalent — it is only ever compared against itself across an await. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
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Included review availability: 1 review is currently available. Your included PR review attempts over the past 7 days set your current allowance at 2 reviews per hour. 📝 WalkthroughWalkthroughThe change updates cache invalidation payloads, catalog import validation, password handling, attendee queries, and database behavior. It adds regression tests and documents equivalent mutation cases. ChangesBackend behavior and regression coverage
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: 🟡 Moderate · up to This PR hardens password handling, retry limits, database synchronization, caching, and related test coverage. Merge readiness is moderate because current tests can still miss an off-by-one retry error, encode the wrong malformed-password behavior, fail to protect unrelated listings from unintended updates, and introduce timing-sensitive execution; these issues should be fixed or explicitly accepted before merging. Possibly related PRs
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
✨ Simplify code
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missingMemberId lives in import-listing.ts but its test sat in import.test.ts, which mirrors a different source. The mutation gate only runs a source against its own mirror, so the test did not count and the guard could be inverted unnoticed. Moved into the mirror directory and widened to show the FIRST gap is the one reported, not just any. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
Only two of the ten reserved slugs were checked, so eight could be dropped from the list unnoticed — each one freeing a word that shadows a real route or a nav label. There is now a case per word, plus one showing a word that merely contains a reserved one is still allowed. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
Three exports had no direct test at all: the occupied-date list, the by-listing read and its filters, and the day view. So a booking's covered days could be sliced wrongly, the wrong half of a batched read could be returned, and every filter setting could be flipped, all unnoticed. Now covered: a multi-day stay expands to each day once, a non-daily listing contributes none, both ways of asking for active lines only mean the same thing, a servicing hold appears only under the wider scope, the day view skips an emptied hold, and each batched read returns the half it promises rather than its neighbour. An unreachable default on a private helper is deleted, and three fallbacks are recorded as equivalent. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
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In `@test/shared/crypto/hashing.test.ts`:
- Around line 50-60: Update the test around verifyPassword to expect false for
the malformed hexadecimal iteration count, and update verifyPassword to validate
that iteration strings contain only decimal digits and represent a positive
count before invoking PBKDF2. Preserve the existing Boolean false behavior for
malformed hash inputs and avoid allowing invalid counts to reach key derivation.
In `@test/shared/db/listing-prices.test.ts`:
- Around line 321-328: Add a second listing with a distinct base price in the
“syncListingPricesForIds rebuilds a single listing too” test, delete only the
base price row for the selected listing, then assert synchronization restores
that listing while leaving the second listing’s original base price unchanged.
In `@test/shared/pending-work.test.ts`:
- Around line 85-90: In the boundary test’s addPendingWork callback, replace the
zero-delay setTimeout with await Promise.resolve() so queueAgain() runs in the
next flush round without scheduling real timers. Preserve the existing
pending-work sequencing and assertions.
In `@test/shared/superuser.test.ts`:
- Around line 562-596: Export the production password draw-limit constant as
MAX_PASSWORD_DRAWS, import it in these tests, and replace the duplicated
DRAWS_ALLOWED value with that symbol. Update the all-rejected randomness test
around generateSuperuserPassword and withRandomBytes to spy on or stub
crypto.getRandomValues and assert it is called exactly MAX_PASSWORD_DRAWS times
before the expected error is thrown.
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scripts/mutation/equivalent-mutants/features.txtscripts/mutation/equivalent-mutants/shared-a-l.txtscripts/mutation/equivalent-mutants/shared-m-z.txtsrc/shared/db/listings/attendees.tssrc/shared/superuser.tstest/features/admin/attendees-list/page.test.tstest/features/admin/catalog-transfer/import-listing/member-ids.test.tstest/features/admin/catalog-transfer/import.test.tstest/features/router.test.tstest/shared/crypto/hashing.test.tstest/shared/db/listing-prices.test.tstest/shared/db/listings/attendees.test.tstest/shared/pending-work.test.tstest/shared/safe-fetch.test.tstest/shared/site-pages/core.test.tstest/shared/superuser.test.ts
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- test/features/admin/catalog-transfer/import.test.ts
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…ests verifyPassword returns false for every other malformed stored hash, but a round count written in hexadecimal slipped past as zero and reached PBKDF2, which refuses a zero count by throwing. A login checking such a record got an unhandled error rather than a plain no. It now refuses a count that is not plain digits, or is zero, the same way as the rest. That guard makes the explicit radix beside it unable to change anything, so it is recorded as equivalent rather than left looking untested. The single-listing price sync now leaves a second listing's mirror deliberately stale and proves it stays that way, so a sync that quietly rebuilt everything would fail. The password draw ceiling is now pinned from both sides: one case finishes on the last allowed draw, the other counts the draws before it gives up. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Dpnsvq2v2q1DEfWsWQhQA1
The boundary test needs each piece of work to settle in its own flush round, which a microtask cannot promise: the chain runs ahead of the flush's own bookkeeping and a round then drains several pieces, so the test stops sitting on the edge it exists to pin. A real task does keep one piece per round, but 999 zero-delay timers spent about a second of genuine waiting, over the slow-test threshold. A message port is a task like a timer, without the wait. The same 999 pieces now take 27ms, and the boundary is unmoved: 999 still succeeds and 1000 still fails.
The cache registry only ever singled out an UPDATE, because only an UPDATE can be narrowed by the columns it assigns. Everything else — insert, delete, replace — took the same path, so classifying which of the three a statement was decided nothing. Two of those words could be blanked out without a single test noticing. So the classification is gone. A write now carries the columns it assigns, or null when it narrows nothing, and the registry gates on that directly. The four-word verb type goes with it, along with the branch that turned an unreadable SET clause back into a fake insert. Also pins two things the tests were letting past: the round-trip guard holds one database call back for the rollback a transaction may need (from both the database and the total allowance), and a rollback blocked at the platform limit says which operation it stopped.
Importing a listing checked its parent links twice: once before the write, and again inside the transaction that adds them. The second check is the one that has to exist — it reads the rows the write will actually touch, so it catches a listing that changed while the file was being read — and it already covered every rule the first one did. Mutation testing is what showed the first check was doing nothing: five different mutations of it changed no test result at all, because the in-transaction check refused the same imports with the same words. So the pre-check is gone, along with the helper it used and 70 lines of rules that had a second home. An import now makes four fewer database reads, and the two messages that were written into the source rather than the message catalog are replaced by the catalog's own. One of those catalog messages needed the work. A named parent that is itself a child used to answer "Please reload and try again", which is no help to someone importing a file — the parent was already a child before the file was read. That path now says what is wrong and leaves out the advice that cannot work.
The guard's direct test still expected the old wording on the import path. Only the parents contract changed, so its sibling assertions on the children contract stay as they were.
Turning Logistics off does two writes at once: it clears the listing default that says new listings use it, and it turns the feature off. The write is guarded on the exact default it read, so another save landing in between refuses it, and it reads again and retries. None of that was tested. Four tests now hold it: a listing still using Logistics refuses the change and leaves the feature on; the stored default really is rewritten, read back through an emptied cache rather than trusted in memory; a default that moves between the read and the write is survived by retrying, with the moved value being the one that gets cleaned; and a write refused for any other reason is reported rather than mistaken for a clash. The moving-default test needs no timing tricks: statements reach the database in the order they are handed to it, so a plain update issued after the disable starts lands in exactly the window the retry exists for.
Two integration tests matched fragments of the old wording rather than the messages themselves, so they went on passing locally and failed the full run. They now compare against the catalog entries, which is what the import actually returns and what will move if the wording moves again.
Pointing both suites at the message catalog made the pair identical, and the duplication check caught it: the same two imports were being refused and checked twice over. The copies in the wide integration file are gone, leaving the ones that sit beside the code they cover.
Main added the ASD-STE100 rules for technical text after this branch started. The rules cover comments, notes, and commit messages. This commit brings the text that the branch adds to those rules. The changes drop every "would", replace an "-ing" verb form, and split two long sentences. No behaviour changes.
stefan-burke
changed the title
The branch gate reached `modifier-resolve.ts`, because this branch deletes a dead export from it. The gate found 20 changes that no test catches. Nine of them are real gaps, and they now have tests. A whole-order add-on is never a dead end. An add-on scope that names no hidden child is never a dead end either. A listing that is switched off serves no page, and nor does a live listing hidden under a parent. A buyer with no history has no visits, and one contact detail is enough to read a count, while a detail of only spaces is nobody. A tier with its stock exactly spent refuses one more. An add-on asked for zero times does not price. An add-on of one penny still sends the order to payment. The other eleven are fallbacks whose left side can never be a falsy-but-present value. Each one is recorded with its proof.
The pricing engine drops a modifier that nothing triggered before it does any further work. An unmatched promo code yields a quantity of 0 for every code modifier, so the drop saves real work on every checkout. It changes no answer, though. Both readers of the candidate list drop a quantity of 0 again, and no negative quantity reaches the line. The entry records that, with the reason.
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Inline comments:
In `@TODO.md`:
- Around line 2654-2655: Update the survivor-category summary in TODO.md to
replace the blanket claim that all 14 survivors are empty-list branches with a
breakdown by mutation category, including the listingsForLinks comparator
mutation and the nullish-coalescing fallback mutations alongside empty-list
branches. Keep the summary aligned with the confirmed mutation details and guide
follow-up tests toward distinguishing each category’s behavior.
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TODO.mdscripts/mutation/equivalent-mutants/shared-a-l.txtscripts/mutation/equivalent-mutants/shared-m-z.txtsrc/features/admin/catalog-transfer/import-listing.tssrc/locales/en/listings-table.jsonsrc/shared/cache-registry.tssrc/shared/crypto/hashing.tssrc/shared/db/client.tssrc/shared/db/listing-edge-write.tssrc/shared/db/modifier-resolve.tssrc/shared/superuser.tstest/features/admin/catalog-transfer/import-listing/references.test.tstest/integration/server/catalog-transfer.test.tstest/shared/cache-registry.test.tstest/shared/crypto/hashing.test.tstest/shared/db/admin-features.test.tstest/shared/db/client.test.tstest/shared/db/client/invalidation.test.tstest/shared/db/client/round-trip-limit.test.tstest/shared/db/listing-edge-write.test.tstest/shared/db/listing-parents/parent-edges.test.tstest/shared/db/listing-prices.test.tstest/shared/db/modifier-resolve/counting.test.tstest/shared/db/modifier-resolve/reachability.test.tstest/shared/pending-work.test.tstest/shared/superuser.test.ts
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The note claimed that all 14 survivors are empty-list branches. Eleven of them are. One is a sort comparator, and two are fallbacks. The note now splits them, and it says to check the two fallbacks for equivalence before anybody writes a test for them.
# Conflicts: # TODO.md
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The merge queue rejected this branch on a test that reserves a port. The test proves that a reservation holds a port and that a release hands it back. It read the release with a plain listen, so anything else on the machine that took the port in that instant failed the test. That is the hazard the port helpers already name, and `retryWhilePortTaken` is the answer they already provide. The test now goes through it: a stolen port means another try on a fresh reservation, and five steals running still fail, with a message that says the port kept being taken rather than a bare address-in-use error. Both halves are checked. The test passes as it stands, and a forced permanent steal fails it with that message after five tries.
# Conflicts: # src/features/admin/catalog-transfer/import-listing.ts # src/shared/db/client.ts # src/shared/superuser.ts # test/features/admin/catalog-transfer/import-listing/references.test.ts # test/features/admin/catalog-transfer/import.test.ts # test/scripts/stripe-mock/ports.test.ts # test/shared/db/client/round-trip-limit.test.ts
# Conflicts: # scripts/mutation/equivalent-mutants/features.txt # scripts/mutation/equivalent-mutants/shared-a-l.txt
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… TODO entry The TODO entry from PR #2110 reported 14 mutation survivors in src/shared/db/listing-parents.ts. That count came from a run whose test glob named only test/shared/db/listing-parents/*.test.ts. The full mirror suite also includes test/shared/db/listing-parents.test.ts, which the mutation runner selects on its own. A fresh run against the full mirror suite killed 12 of the 14. The two real survivors are the ?? to || fallbacks in edgeIncompatibilityAfterChange. Map.get there returns an array or undefined, and an array is never falsy, so no test can tell the two operators apart. Both are now recorded in equivalent-mutants/ with that proof, which takes the file to a 100% score. Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_013Ve7CEwp4N5YhvfgumG7KN
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Follow-up to #2100 and #2103.
Why this exists
#2100 rewrote twenty-two files. Nothing measured whether the tests for those
files catch a mistake, because every measuring run died before it finished. The
runs finish now. They found 132 places where a change to the code passes every
test.
This pull request closes the first batch of those places. Along the way it
found three real faults and two checks that the system ran twice.
Three real faults
A stored password with an odd round count crashed the login. Every other
malformed stored password returns a plain "no". A round count written in
hexadecimal reached the key derivation instead, which threw an error that
nobody caught. The check now refuses any count that is not plain digits, and
answers "no" like the rest.
A superuser password never finished. The generator drew random characters
until it had enough. Nothing stopped it when the randomness source handed back
nothing it can use. It now gives up after a hundred draws and says so. Two
tests hold that number from both sides: a password that finishes on the
hundredth draw still works, and a hundred and first draw never happens.
A test outlived its own assertion. The runaway-work test built a chain that
feeds itself, and only a flag after the check stopped it. When the check failed
first, the flag stayed up and the chain span the processor at full tilt. It now
lowers the flag whatever happens, and carries its own ceiling as well.
Two checks that ran twice
An import checked its parent links twice. A catalogue import checked the
listings named as parents before the write, and the write itself checked them
again inside its transaction. The second check is the one that has to exist,
because it reads the rows the write touches. Five separate changes to the first
check altered no test result at all, because the second check refused the same
imports with the same words. The first check is gone. An import now makes four
fewer database reads, and two refusals that lived in the source as English text
come from the message catalogue instead.
One of those catalogue messages needed work. A named parent that is itself a
child answered "Please reload and try again", which is no help to somebody who
imports a file. That path now says what is wrong and drops the advice that
cannot work.
A write told the caches which word it started with. The cache registry only
ever singled out an UPDATE, because only an UPDATE narrows down to the columns
it assigns. Insert, delete and replace all took one path. Two of those three
words could disappear from the source without a test noticing. A write now
carries the columns it assigns, or nothing at all, and the four-word type is
gone.
What the tests missed
used, and nothing read the round count as an ordinary number.
so four of them could disappear unnoticed.
that it hides the arrival filter and ignores a date in the address.
the same way. Half of that promise was checked.
or that an apostrophe in a name reaches the page safely.
was written.
to undo itself, and a blocked cleanup call never named itself.
refuses the change, that the stored default really moves, or that a default
which moves mid-flight is survived by a second try.
Deliberately not changed
Fourteen changes are recorded as impossible for any test to catch, each with
its reason. Examples: a fallback whose only possible value is the one it falls
back to, a label that only a debugger reads, and a spare radix that a digit
check above it makes irrelevant.
One fix that came from main
This branch merged main twice while it waited. The second merge brought a
build failure that main already carried:
src/shared/sentry-sdk.tsimports@sentry/corein two statements, which the new import checker refuses. Twopull requests caused it together — one added the checker, the other added the
file — so each was green on its own and the pair was not. The two statements
are now one, and the type-only name carries an inline
type.Speed
The flush-boundary test needed 999 separate waits, which cost a full second of
real time. It now steps through a message port instead, which is the same kind
of pause without the wait. That file went from 1s to 39ms, and the boundary
still sits in exactly the same place.
Results
Every file below now catches all of its changes.
crypto/hashing.tscrypto/utils.tssafe-fetch.tsadmin/attendees-list.tsdb/listing-prices.tspending-work.tsfeatures/router.tsshared/superuser.tsdb/client.tsshared/cache-registry.tscatalog-transfer/import-listing.tsdb/listing-edge-write.tsdb/admin-features.tsshared/sentry-sdk.tsdeno task precommitpasses.deno task precommit:mutationcovers everysource file that this branch changes: 743 mutants, 720 killed, 0 survived, 23
suppressed as known-equivalent.
Still to come
The attendee form holds 56 of the 132 places, and it has no direct test at all.
That work needs a test file written from nothing, so it comes as its own pull
request.
TODO.mdalso records 14 places indb/listing-parents.ts, which thisbranch does not change.
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