jheapsandClaude Opus 5
d297c1a2c9
Last change found a folded player's stack sitting at 2.22:1, hidden for twenty rounds
behind an exemption. So I went looking for the other exemptions rather than waiting for
the next one to surface. There were two, and neither is hiding a live fault today --
which is worth saying plainly, because it means this is a fix to the instrument and not
to the tool.
Leaf elements only
if (el.children.length > 0) return; // leaf text only
An element's own text stopped being measured the moment a child was added to it. The
undo control went that way two changes ago, the day a <kbd> was appended to it: its
label became invisible to this check with no sign that anything had changed. Now it
measures an element's own text nodes and leaves the descendants to their own turn,
against their own colours.
aria-hidden as a contrast exemption
The bets layer is aria-hidden because the amounts on the chips are already announced by
the seat and the action bar, and repeating them would be noise. That is a good reason
to hide them from a screen reader and no reason at all to stop checking whether a
sighted dealer can read them -- and the chips are exactly what the felt is read for.
Two different questions were being answered by one attribute.
Nothing is exempt now. If something genuinely decorative turns up, it should say so in
its own words rather than borrowing an attribute that means something else. The
watermark that the exemption was written for is gone as of the change before last.
What the widened check finds
Nothing. Zero offenders at six viewports across touch and pointer contexts, and with
the sidebar panels and the rulings sheet open. Measured from rendered pixels, the two
things that had been invisible are comfortable: the bet chip amounts read 12.65 to
13.74:1 and the undo label 8.06:1.
So the fix is proved by injection instead. Colouring the bet chip amounts #3a3a3a now
reports three offenders at 1.80:1, and colouring the undo control #2f2f2f reports it at
1.13:1. Neither was reported before.
269 tests still passing, no console errors.
Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_015bnp7xKUPFFSpwkYNFaPgb
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 |
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, and that no text is painted outside its box. It runs over the table, all five overlays and Quick Split, at thirteen viewports from a 360px phone to a 1600px desktop and the same phones on their side.
Deliberately not in CI: the unit suite is dependency-free and runs in a second, 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 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.