livewire-material/tests/Feature/Components/InputStylesheetsTest.php

<?php

use Illuminate\Support\Facades\File;
use NoNameWeb\LivewireMaterial\Tests\Support\ComponentStylesheet;
use NoNameWeb\LivewireMaterial\Tests\Support\ViewClasses;

/**
 * The inputs, selection and data components, rewritten without Tailwind (plan step 36): each view
 * renders `data-md-*` attributes and no class list of its own beyond the interaction and text
 * classes (tests/Support/ViewClasses.php), and each has a stylesheet in
 * `material.components` that imports the stylesheets of the components its view renders, writes
 * its values from the tokens and its breakpoints as px range queries, and is imported from the
 * "Inputs, selection and data" block of components.css.
 *
 * `pagination` is not in this dataset: its four views live in `resources/views/pagination/**`, not
 * `resources/views/components/`, so the two checks that read a single `resources/views/components/
 * {name}.blade.php` file do not apply to it. It gets the three checks that do not depend on that
 * path below, and its own small versions of the other two.
 */
function inputComponents(): array
{
    return [
        'form',
        'field',
        'input',
        'password',
        'textarea',
        'select',
        'file',
        'checkbox',
        'radio',
        'toggle',
        'chip',
        'chip-set',
        'choices',
        'slider',
        'search',
        'table',
        'sort-header',
        'datepicker',
        'timepicker',
    ];
}

dataset('input components', inputComponents());

/**
 * The checks that read a stylesheet alone also run on the one no view renders by itself:
 * selection.css, what the checkbox, radio and switch share (its own file header names them), which
 * each of their stylesheets imports. Nothing renders it directly and components.css never imports
 * it either — only checkbox.css, radio.css and toggle.css do — so without this its shape and token
 * rules would go unchecked, the way navigation-item.css did before NavigationStylesheetsTest.php
 * picked it up.
 */
dataset('input stylesheets', [...inputComponents(), 'selection']);

/**
 * Fails unless every media query in the stylesheet writes its lengths in px, at one of M3's four
 * breakpoints. The one exception is a viewport *height* in a query keyed on `orientation`: the time
 * picker lies its dial down by device orientation and height, which M3 explicitly does not make a
 * breakpoint (docs/reference/m3/components-navigation-selection-inputs.md § Time pickers/Behaviour),
 * so that height may be any px. A width, in any query, is still a breakpoint. `rem` and `em` would
 * grow with the reader's text size, which neither should.
 */
function assertBreakpointsInPx(ComponentStylesheet $css, string $label): void
{
    foreach ($css->mediaQueries() as $query) {
        $orientation = preg_match('/\(\s*orientation\s*:/', $query) === 1;

        preg_match_all('/\(([^()]*)\)/', $query, $features);

        foreach ($features[1] as $feature) {
            preg_match_all('/(\d*\.?\d+)(px|rem|em)\b/', $feature, $lengths, PREG_SET_ORDER);
            $height = preg_match('/(?:^|[\s:<>=])(?:min-|max-)?height\b/', $feature) === 1 && ! str_contains($feature, 'width');

            foreach ($lengths as [, $number, $unit]) {
                expect($unit)->toBe('px', "{$label}: {$query}");

                if (! ($orientation && $height)) {
                    expect(in_array($number, ['600', '840', '1200', '1600'], true))->toBeTrue("{$label}: {$query} is not at an M3 breakpoint");
                }
            }
        }
    }
}

/**
 * Colours are roles, shadows are elevation levels, type is a type style, motion is a spring — and
 * breakpoints are px, at one of M3's four (an orientation query's height aside; see
 * assertBreakpointsInPx()).
 *
 * One named exception, in field.css alone: its autofill workaround (`transition: background-color
 * 604800s, color 604800s`) delays Chrome's autofill background for a week, which is not a spring and
 * is not meant to be one — a `var(--md-sys-motion-*)` duration there would visibly repaint on load.
 */
function assertTokensAndPxBreakpoints(ComponentStylesheet $css, string $label): void
{
    $source = (string) preg_replace('~/\*.*?\*/~s', '', $css->css);

    if ($label === 'field.css') {
        $source = str_replace('transition: background-color 604800s, color 604800s;', '', $source);
    }

    expect($source)->not->toMatch('/#[0-9a-f]{3,8}\b|\b(?:rgba?|hsla?|oklch|oklab|lab|lch)\(/i')
        ->not->toMatch('/\bfont:(?!\s*var\(--md-sys-typescale-)/')
        ->not->toMatch('/\btransition[a-z-]*:[^;]*(?:\d+m?s\b|\bease\b|ease-in|ease-out|cubic-bezier)/');

    // A box-shadow is `none`, an elevation level, or a ring: `[inset] 0 0 0 <n>px` in a colour
    // role (or a role mixed toward transparent, a disabled ring) — a day's or a year's "current"
    // outline, a focused time field's edge. Never a hand-made shadow.
    $colour = 'var\(--md-sys-color-[a-z-]+\)|color-mix\(in srgb, var\(--md-sys-color-[a-z-]+\) [^;]+?, transparent\)';

    preg_match_all('/\bbox-shadow:\s*([^;]+);/', $source, $shadows, PREG_SET_ORDER);

    foreach ($shadows as [, $value]) {
        expect(trim($value))->toMatch("/^(?:none|var\\(--md-sys-elevation-[0-5]\\)|(?:inset )?0 0 0 \\d+px (?:{$colour}))$/", "{$label}: box-shadow: {$value} is not none, an elevation or a ring in a colour role");
    }

    assertBreakpointsInPx($css, $label);
}

it('draws the component from a stylesheet shaped like every package stylesheet', function (string $name) {
    $css = ComponentStylesheet::read($name);

    expect($css->css)->toStartWith('/*')
        ->and($css->statements()[0] ?? null)->toBe('@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;')
        ->and(array_slice($css->statements(), 1))->each->toMatch('/^@import \'\.\/[a-z-]+\.css\';$/')
        ->and($css->blocks())->each->toBe('@layer material.components')
        ->and($css->css)->not->toMatch('/@(?:tailwind|theme|utility|variant|custom-variant|apply|source|config|plugin|reference)\b|--(?:theme|spacing|alpha)\(|\btheme\(/');

    foreach ($css->imports() as $import) {
        expect(is_file(dirname(ComponentStylesheet::path($name)).'/'.$import))->toBeTrue("{$name}.css imports {$import}, which does not exist");
    }
})->with('input stylesheets');

it('imports the stylesheet of every component its view renders', function (string $name) {
    preg_match_all('/<x-livewire-material::([a-z-]+)/', File::get(__DIR__."/../../../resources/views/components/{$name}.blade.php"), $tags);

    $rendered = collect($tags[1])->unique()
        // A component still written for Tailwind has no stylesheet of its own to import yet; its
        // old stylesheet, if it has one, lives in tailwind.css without the layer statement.
        ->filter(fn (string $tag): bool => is_file(ComponentStylesheet::path($tag)) && str_contains(File::get(ComponentStylesheet::path($tag)), '@layer material.components'))
        ->map(fn (string $tag): string => "./{$tag}.css")
        ->values()
        ->all();

    expect(array_values(array_diff($rendered, ComponentStylesheet::read($name)->imports())))->toBe([]);
})->with('input components');

it('writes no class list into the view but the interaction and text classes', function (string $name) {
    expect(ViewClasses::violations(File::get(__DIR__."/../../../resources/views/components/{$name}.blade.php")))->toBe([]);
})->with('input components');

it('takes its values from the tokens and its breakpoints in px', function (string $name) {
    assertTokensAndPxBreakpoints(ComponentStylesheet::read($name), "{$name}.css");
})->with('input stylesheets');

it('is imported from the inputs, selection and data block of components.css', function (string $name) {
    $components = File::get(__DIR__.'/../../../resources/css/components.css');
    $block = substr($components, (int) strpos($components, '/* Inputs, selection and data */'));
    $block = substr($block, 0, (int) strpos($block, '/* Containment */'));

    expect($block)->toContain("@import './components/{$name}.css';");
})->with('input components');

// ---- pagination: its views live outside resources/views/components/ --------------------------

it('draws pagination from a stylesheet shaped like every package stylesheet', function () {
    $css = ComponentStylesheet::read('pagination');

    expect($css->css)->toStartWith('/*')
        ->and($css->statements()[0] ?? null)->toBe('@layer material.reset, material.tokens, material.base, material.layout, material.components, material.text, material.visibility;')
        ->and(array_slice($css->statements(), 1))->each->toMatch('/^@import \'\.\/[a-z-]+\.css\';$/')
        ->and($css->blocks())->each->toBe('@layer material.components')
        ->and($css->css)->not->toMatch('/@(?:tailwind|theme|utility|variant|custom-variant|apply|source|config|plugin|reference)\b|--(?:theme|spacing|alpha)\(|\btheme\(/');

    foreach ($css->imports() as $import) {
        expect(is_file(dirname(ComponentStylesheet::path('pagination')).'/'.$import))->toBeTrue("pagination.css imports {$import}, which does not exist");
    }
});

it('takes pagination\'s values from the tokens and its breakpoints in px', function () {
    assertTokensAndPxBreakpoints(ComponentStylesheet::read('pagination'), 'pagination.css');
});

it('is imported from the inputs, selection and data block of components.css for pagination', function () {
    $components = File::get(__DIR__.'/../../../resources/css/components.css');
    $block = substr($components, (int) strpos($components, '/* Inputs, selection and data */'));
    $block = substr($block, 0, (int) strpos($block, '/* Containment */'));

    expect($block)->toContain("@import './components/pagination.css';");
});

dataset('pagination views', [
    'pagination/laravel/tailwind',
    'pagination/laravel/simple-tailwind',
    'pagination/livewire/tailwind',
    'pagination/livewire/simple-tailwind',
]);

it('imports the stylesheet of every component pagination\'s views render', function (string $view) {
    preg_match_all('/<x-livewire-material::([a-z-]+)/', File::get(__DIR__."/../../../resources/views/{$view}.blade.php"), $tags);

    $rendered = collect($tags[1])->unique()
        ->filter(fn (string $tag): bool => is_file(ComponentStylesheet::path($tag)) && str_contains(File::get(ComponentStylesheet::path($tag)), '@layer material.components'))
        ->map(fn (string $tag): string => "./{$tag}.css")
        ->values()
        ->all();

    expect(array_values(array_diff($rendered, ComponentStylesheet::read('pagination')->imports())))->toBe([]);
})->with('pagination views');

it('writes no class list into pagination\'s views but the interaction and text classes', function (string $view) {
    expect(ViewClasses::violations(File::get(__DIR__."/../../../resources/views/{$view}.blade.php")))->toBe([]);
})->with('pagination views');