The CSV export carries the hands, the standings and the settle-up. It carried neither of the two places a dealer types context. Each seat can hold custom fields -- "IOU: $20 to Ann", "Seat rent: paid to 2am", "Venmo: @ann" -- and the table has a notes box for the rest: side bets, a high-hand promo, who owes the box from last week. Both are typed precisely because they matter to settling up, and both were visible only inside the tool. The one place the context was written down was the one place it could not leave. Now the standings rows end with a Notes column carrying that seat's fields, and the table's notes go in a section of their own at the end. Player,Paid In,Won,Net,Bought In,Chips Now,Up/Down,Notes Ann,20.00,60.00,40.00,200.00,150.00,-50.00,Seat rent: paid to 2am; Venmo: @ann Ben,20.00,0.00,-20.00,200.00,200.00,0.00,IOU: $20 to Ann Cal,20.00,0.00,-20.00,200.00,250.00,50.00, Table Notes "High-hand promo until midnight. Mo owes the box $15, from last week." Notes go last so the money columns keep the shape a spreadsheet expects, and the multi-line note is quoted as one cell rather than becoming rows that read as more players. An existing test caught this, correctly "every money cell parses as a number" asserted that every column after the name was numeric, and a Notes column is text by definition. The invariant it protects is real -- the file exists so somebody can total a column -- so it now names the six money columns and checks those, rather than "everything after the first". That is the assertion it always meant. 9 tests (278 total): a seat's fields ride along, the money columns keep their order, a seat with nothing written gets an empty cell rather than the word undefined, a blank field does not leave a stray colon, a multi-line note survives as one cell, no notes means no section rather than an empty heading, and asking for the standings does not change the seats. Driven through the real Export CSV button, not just the function: the downloaded file carries both seats' notes and the table's. Audit and contrast clean, 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.