jheapsandClaude Opus 5
f07144acd8
A phone held sideways is 640x360: short of height and swimming in width. The layout spent the whole of that shortage on one column — 70px of header, 85px of felt, 205px of action bar. Two rows of seat pucks 55px tall have to fit inside 85px of felt, which they cannot, so seven of nine finished past the rail with up to 17px of puck floating on the page. That single fault was 96 of the 98 offenders the layout audit could find anywhere. No amount of shrinking fixes it, because the shortage was never in the table. The bar is 205px tall and 529 wide to hold three buttons and a status line, and it was taking that height from the one element that needed height. So in landscape it moves: the bar becomes a rail down the right-hand side, the table takes the column beside it, and the felt goes from 529x85 to 409x205 — an actual oval, with room for two rows of pucks and a gap between them. It also puts Fold, Call and Raise under the right thumb rather than along the bottom edge, where a landscape grip has the palm. Which layout the bar is in is declared by the stylesheet in a custom property and read back by actionBar.js, because the one thing that must not exist is a second copy of that media query written in JavaScript. Then the ring stopped predicting itself. seatRingRadii works out the widest ring whose outermost puck still finishes inside the rail, and it is right about a puck it measured before the width search settled and before a name wrapped or was shortened — each worth up to 15px of height arriving after the answer. Four viewports finished with the top seat 5-6px over. render.js now checks the drawn result the way the audit judges it: if the worst puck hangs 6px past the rail, the ring comes in by 6px and they are placed again. A layout that predicts itself has to be right about the future; one that measures itself only has to be right about the present. Also in this round: - Names shorten at a word instead of being chopped mid-one. "Mike from work" on a nine-handed phone was "Mike f…"; he is Mike. A name never ends on a joining word, because "Mike from" looks cut off rather than shortened, and the whole name is on the tooltip either way. - The blind badge is counted in what a seat needs. It always points away from the table, which was taken to mean it costs nothing between two seats — true of a straight rail and false of a ring, where neighbours sit at different heights. Three tables had a player's stack painted under the next player's SB or BB, and that badge outranks everything else on the felt. It also got shorter, 15px to 12: clearing its own name at 5px of overhang instead of 9 hands every chair in the ring four pixels back, which at 640x360 is the difference between a 66px puck and a 48px one. - Border-box, inherited, for the whole app rather than nine elements opting in one at a time. Both elements that hadn't went wrong in the same afternoon: the rail overran the page's padding by 25px and put Resolve Pot underneath itself, and the raise pad's amount field pushed a horizontal scrollbar across a 640px phone. - The raise amount field is thumb-sized. The rule that sizes fields for a finger names the settings panels and the seat form, so the one field on the one surface built for thumbs was 36px on every phone in the list. The sweep never saw it because it had no step that opened the raise pad; it has one now, and that step also caught the rail squeezing its own status line under the pad. - mobile-web-app-capable alongside Apple's older name, which Chrome has been calling deprecated in this page's console on every load. The audit goes from 19 failing configurations and 98 offenders to 2 and 3, across 294 audits — thirteen viewports, three table shapes, a mouse and a thumb. What is left is twelve players on a 360px phone with the raise pad open, where twelve pucks at the 44px minimum genuinely do not fit on the felt; the search reports that rather than papering over it. Each new mechanism was checked by breaking it on purpose: removing the settle pass puts 26 offenders back, dropping the badge from the footprint 5, and un-sizing the raise field is caught by the step that now opens it. Co-Authored-By: Claude Opus 5 <[email protected]> Claude-Session: https://claude.ai/code/session_015bnp7xKUPFFSpwkYNFaPgb
10 KiB
Hold'em dealer tests
Unit tests for the money logic behind /Casino/TexasHoldem — the betting engine, the
side-pot calculator, the split calculator and the table state.
node --test tests/holdem/*.test.js
No install step, no package.json, no dependencies. The browser modules are plain
script-tag files that each end with a module.exports guard, so Node can require them
as-is; load.js puts them on globalThis under the same names they use to find each
other in the page, in the load order from TexasHoldem.cshtml.
What's covered
| File | Covers |
|---|---|
potCalculator.test.js |
Main and side pots, dead money, uncalled bets, odd-cent distribution |
betting.test.js |
Blinds, street completion, raises reopening the action, all-in run-outs |
state.test.js |
Button rotation, which seats post blinds, session standings |
splitCalculator.test.js |
Chopped pots, odd chips, unmakeable denominations |
handRank.test.js |
What beats what: categories, the wheel, kickers, best five of seven |
readingTheShowdown.test.js |
The board, the picker that fills it, and who wins a side pot |
theRail.test.js |
A phone on its side: which shape the bar is in, what it leaves under the felt, how a name is shortened, how the ring is pulled back onto the table |
invariants.test.js |
1000 randomised hands per property (see below) |
The layout audit
The unit tests above cover the money. uiAudit.js covers the thing you can only see
in a browser: whether a dealer can actually reach every control.
node tests/holdem/runUiAudit.js # needs Playwright and the site running
It checks WCAG AA contrast, touch target sizes, touch-action and tap highlights, that fields stay selectable and are large enough not to trigger iOS zoom, that nothing important is covered or off-screen with no way to scroll to it, that no grid column has collapsed to nothing, that no text is painted outside its box, that no seat covers another seat's writing, and that no bet chip is hidden behind a seat or another chip. It runs over the table, the raise pad, all five overlays and Quick Split, at thirteen viewports from a 360px phone to a 1600px desktop and the same phones on their side — each viewport twice, once with a mouse and once with a thumb, and at three table shapes, mid-hand: the sweep posts blinds, deals and calls three times before it measures anything, so the bets layer has chips on it. It used to audit a table nobody had ever bet at, which is a third of what is on the felt during a hand left unlooked at.
The raise pad is newer than the rest and was worth every second it costs. It is part
of the bar rather than an overlay, so nothing here had a step that opened it, and it is
both the tallest thing the bar ever holds and the only place in the tool a dealer types
an amount. The first sweep that opened it found a 36px-tall field on every phone in the
list: the hover: none rule that sizes fields for a thumb names the settings panels and
the seat form, and the one field on the one surface built for thumbs was not in the
list. It also found the rail squeezing its own status line under the pad, which is the
kind of thing that only happens in the state nobody was looking at.
"Covered" and "out of view" are told apart before anything is hit-tested. An element clipped away by a panel that scrolls is not covered by whatever happens to be painted at that height, and reporting it that way is a diagnosis of something that isn't happening: the pot wizard's third winner, below the fold in a list, came back for four viewports running as "fully covered by button Confirm Winner(s)".
More than one table shape is also newer than it sounds. The sweep ran on one — five players at a nine-handed table — for its whole life, and how much room the felt has depends on how many people are sitting down far more than on anything a viewport can report. A full table is where the seats crowd and it had never been looked at: the first sweep that did found one player's name or stack painted under another on eighteen of the configurations, on every phone in the list.
The third shape is the same five players with the board turned on and five cards on it. It is deliberately the same roster in the same chairs as the second, so the only thing that differs between the two rows is the board — a seventh player would have told us that a seven-handed table crowds, which is true, already known, and not what that row is there to find out. It earned its place immediately: the board takes the middle of the felt, or a strip above it where the middle is too small, and the strip costs the felt height. The seats follow a felt that changes size on their own, being placed in percentages of it; the chips anchored inside them do not, being placed in pixels. They were laid out for a felt 23px taller than the one they were painted on.
What the sweep taught the layout
For a long run of rounds the seat ring was predicted onto the table: work out the widest ring whose outermost puck still finishes inside the rail, place the seats, and trust it. The prediction is correct arithmetic and it was wrong on the page anyway, because every input to it moves after it is taken — the width search settles on a narrower puck, a name wraps to a second line or gets shortened out of one, the board appears in the middle. Each of those is up to 15px of puck height arriving after the answer. Ninety-six of the ninety-eight offenders this sweep could find were that.
So render.js now finishes the way the audit judges it. After the seats are placed it measures where they actually landed, and if the worst of them hangs 6px past the rail the ring comes in by 6px and they are placed again — the same question this file asks, asked by the code that has to get it right. Two passes, bounded, because each one is a forced layout of the whole felt and it runs after every tap a dealer makes.
That is the general shape of the lesson here: a layout that predicts itself has to be right about the future, and a layout that measures itself only has to be right about the present.
That last part, and two of those checks, are newer than this paragraph claiming them.
runAll() did not include the contrast check at all, and touch targets sat behind an
opt-in flag nothing passed, so "the audit is clean" meant nine checks rather than
eleven for a long run of rounds. Both were written and tested and simply never called.
The mouse/thumb pair matters for the same reason: the 44px rule stands itself down
where hover: hover says there is a pointer, and a headless desktop browser is a
pointer, so a single pass had never measured a touch target at any viewport. Between
them they found a 9px seat label at 3.39:1, a 37px-tall amount field and a 30px delete
button on Quick Split.
A check that decides it doesn't apply says so in the output rather than reporting no offenders, which reads identically to a pass. The same goes for the two exemptions that exist: a disabled control, which WCAG itself excuses, and a link inside a sentence, whose size is set by the line it sits in.
Deliberately not in CI: the unit suite is dependency-free and runs in about five
seconds, while this one needs a browser and a running site. Run it after any change that adds or
resizes a control. With no Playwright to hand, paste uiAudit.js into devtools and
call LayoutAudit.runAll().
The contrast check is built so it cannot report a false positive: backgrounds
composite through alpha, and where a gradient is involved every colour stop is tried
and the most flattering one used. A finding means the text fails even under the
reading most generous to it. Two earlier attempts at this got it wrong in both
directions — one read only background-color and scored text on a gradient against
nothing, the other treated low-alpha stops as opaque — so uiAudit.js is checked
against known-answer cases before it is believed.
Touch targets are measured by probing outward with elementFromPoint rather than by
reading the element box, because the box lies in both directions: a small control can
be padded out with a transparent ::after and respond well beyond its painted size,
and a checkbox inside a label is hit by tapping the label. The 44px rule is only
enforced where hover: none says there's no mouse.
It exists because these checks were being re-typed into a console every time something changed, and each time they only covered whatever had just been touched. That is how the standings table shipped with a player-name column zero pixels wide and kept it for two rounds.
Why the hand evaluator is tested the way it is
handRank.js is the only module here that can pay the wrong person without anybody
noticing. A pot wizard that asks "who won?" is never more wrong than the dealer ticking
the box; one that answers the question itself is wrong on its own account, silently,
and a table that has come to trust it will not check.
So besides the hand-written cases — every category against every other, the wheel, three kickers deep, the counterfeited two pair, the board that plays — it is checked against a second evaluator written a different way, on twenty thousand random seven-card hands and four thousand random pairs of them. The second one is in the test file and shares no helper with the module: it scores a hand by counting ranks into a sortable list rather than by asking about shapes. That pass is most of the suite's running time and it is worth it; three deliberately introduced bugs — an ace that keeps its value in the wheel, a dropped two-pair kicker, a flush read only by its top card — are each caught by it as well as by the cases written for them.
Why the randomised suite exists
Every correctness bug found in this tool so far has been shape-dependent: blinds posted to empty chairs, the button skipping past players, heads-up acting out of order, an overbet announced as a side pot. None of them show up on a full six-handed table with equal stacks, which is the table anyone writes a fixed example for.
invariants.test.js deals a thousand hands across random seat counts, random empty
chairs, random stack depths and random dealer input, and checks the things a dealer
would notice being wrong:
- chips are never created or destroyed during play
- the pot breakdown plus the uncalled returns always equal the money that went in
- paying the pot out settles it to the cent
- once uncalled chips are handed back, nobody is still betting above the whole table
- the button and both blinds always land on players who are actually in the hand
The generator is seeded, so a failure reproduces from the seed printed in the message rather than being a flake to re-run.