JoshHeaps.Net/tests/holdem/nativeControls.test.js

// The half of the interface the stylesheet does not draw.
//
// The browser draws the checkboxes, the menu a <select> opens, the scrollbars, the
// caret, the spellcheck underline and the autofill wash, and it draws all of them for a
// light page unless the page says otherwise. This one never did: measured,
// `color-scheme: normal` on a #141414 ground, with three checkboxes in the Table Setup
// panel rendering as bright white squares — the loudest objects on the screen, brighter
// than the gold — and two more in the seat sheet doing the same over the felt.
//
// The comment on the pot wizard's hand-painted checkbox called it "the last raw browser
// control in the tool". Six others were still the platform's, and three of those were
// still 13x13 against a 24px floor this stylesheet had already written down once and
// applied to exactly one box.
//
// Painting is the expensive way to fix that, and the pot wizard's box shows the bill:
// a tick drawn as a `background` on a pseudo-element is not a colour forced-colors mode
// knows how to replace, so it simply disappears — no visible checked state at all, on
// the dialog that pays the table. Declaring the scheme fixes six controls natively and
// costs nothing; the seventh stays painted on purpose and pays its own way.
const test = require("node:test");
const { describe } = require("node:test");
const assert = require("node:assert");
const fs = require("fs");
const path = require("path");

const CSS = fs.readFileSync(
    path.join(__dirname, "..", "..", "JoshHeaps.Net", "wwwroot", "css", "casino", "holdem.css"), "utf8");

const ruleFor = selector => {
    const at = CSS.indexOf(`\n${selector} {`);
    assert.ok(at >= 0, `there is no \`${selector}\` rule`);
    return CSS.slice(at, CSS.indexOf("}", at));
};

// Every block of a given at-rule, braces balanced, joined.
//
// This used to take the first one and stop, which held for exactly as long as there was
// one of them. A second forced-colors block was added nearer the top of the file for a
// control that dropped out of the OS palette, and the bill-paying test below started
// reading that block instead and reporting the pot wizard's answers missing — a false
// failure about a rule nobody had touched. There is no reason a stylesheet should
// answer a media query in one place, so this asks about all of them.
const atRule = query => {
    const open = `@media ${query} {`;
    const blocks = [];
    for (let at = CSS.indexOf(open); at >= 0; at = CSS.indexOf(open, at + 1)) {
        let depth = 0;
        for (let i = CSS.indexOf("{", at); i < CSS.length; i++) {
            if (CSS[i] === "{") depth++;
            else if (CSS[i] === "}" && --depth === 0) { blocks.push(CSS.slice(at, i + 1)); break; }
        }
        assert.ok(blocks.length && depth === 0, `\`${open}\` never closes`);
    }
    assert.ok(blocks.length, `there is no \`@media ${query}\` block`);
    return blocks.join("\n");
};

// ---------------------------------------------------------------------------

describe("the page says what colour it is", () => {
    const root = ruleFor(":root");

    test("dark, to the browser and not only to the eye", () => {
        assert.match(root, /color-scheme:\s*dark/);
    });

    // The checked colour is the green this tool already uses for yes, so the one
    // painted checkbox and the six native ones agree rather than nearly agree.
    test("and the checked colour is the tool's own green, not the platform's blue", () => {
        assert.match(root, /--accent-on:\s*#1e8449/);
        assert.match(root, /accent-color:\s*var\(--accent-on\)/);
        assert.match(ruleFor(".potWizardChoice input:checked"), /background:\s*#1e8449/);
    });
});

describe("a checkbox is one size", () => {
    test("every one of them, not the one that was noticed", () => {
        assert.match(ruleFor('input[type="checkbox"]'), /width:\s*24px/);
        assert.match(ruleFor('input[type="checkbox"]'), /height:\s*24px/);
    });

    test("and no box carries a size of its own any more", () => {
        assert.ok(!/#dedicatedDealerToggle\s*\{/.test(CSS),
            "one checkbox is still sized by id, which is how five got left behind");
        assert.ok(!/width:\s*22px/.test(ruleFor(".potWizardChoice input")),
            "the painted box restates its size instead of taking the one above");
    });

    // A stated width is only a suggestion to a flex item. The coarse-pointer block had
    // already been bitten by this and said so; the mouse case had not.
    test("a swatch in a crowded row keeps the width it was given", () => {
        assert.match(ruleFor(".chipColorInput"), /flex:\s*none/);
    });
});

describe("what painting a control costs, and who pays it", () => {
    // If a future round paints another one, this is the bill it has to settle too.
    test("nothing gives up the platform's drawing without answering forced colours", () => {
        const forced = atRule("(forced-colors: active)");
        const painted = [...CSS.matchAll(/\n([^\n{}]+)\s*\{[^}]*appearance:\s*none/g)]
            .map(m => m[1].trim());
        assert.ok(painted.length > 0, "nothing is painted, so this test is measuring nothing");
        painted.forEach(selector => {
            assert.ok(forced.includes(selector),
                `\`${selector}\` drops the platform's control but has no forced-colors answer`);
        });
    });

    // A tick drawn as a background is gone in forced-colors mode; a system keyword is
    // the only colour guaranteed to survive, because it *is* the palette.
    test("the tick that is drawn rather than typed survives the OS repainting it", () => {
        const forced = atRule("(forced-colors: active)");
        assert.match(forced, /\.potWizardChoice input::before\s*\{[^}]*background:\s*CanvasText/);
    });

    test("and so does the row's own chosen state, which is a gradient", () => {
        const forced = atRule("(forced-colors: active)");
        assert.match(forced, /\.potWizardChoice\.chosen\s*\{[^}]*outline:\s*2px solid Highlight/);
    });
});

describe("the other page of the same tool", () => {
    const QUICKSPLIT = fs.readFileSync(
        path.join(__dirname, "..", "..", "JoshHeaps.Net", "wwwroot", "css", "casino", "quicksplit.css"), "utf8");

    // It is the darker of the two pages and is opened from the felt mid-hand. It has no
    // checkboxes to go white, but scrollbars, caret and selection were still drawn for
    // a light page.
    test("Quick Split says what colour it is too", () => {
        assert.match(QUICKSPLIT, /:root\s*\{[^}]*color-scheme:\s*dark/);
    });
});