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

<?php

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

/**
 * The actions and communication components, rewritten without Tailwind (plan step 36): each view
 * renders `data-md-*` attributes and no class list of its own, 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
 * "Actions and communication" block of components.css.
 */
dataset('action components', [
    'loading',
    'tooltip',
    'badge',
    'button',
    'group',
    'button-group',
    'split-button',
]);

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('action components');

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('action components');

it('writes no class list into the view', function (string $name) {
    $view = File::get(__DIR__."/../../../resources/views/components/{$name}.blade.php");

    // A class the caller hands in (`hint-class`, `icon-class`, a slot's attributes) passes through.
    expect($view)->not->toMatch('/(?<![\w-])class="(?!\{\{ \$)|@class\(|->class\(|toCssClasses|(?:x-bind)?:class=/');
})->with('action components');

it('takes its values from the tokens and its breakpoints in px', function (string $name) {
    $css = ComponentStylesheet::read($name);
    $source = (string) preg_replace('~/\*.*?\*/~s', '', $css->css);

    // Colours are roles, shadows are elevation levels, type is a type style, motion is a spring.
    expect($source)->not->toMatch('/#[0-9a-f]{3,8}\b|\b(?:rgba?|hsla?|oklch|oklab|lab|lch)\(/i')
        ->not->toMatch('/\bbox-shadow:(?!\s*(?:none|var\(--md-))/')
        ->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)/');

    foreach ($css->mediaQueries() as $query) {
        preg_match_all('/(\d*\.?\d+)(px|rem|em)\b/', $query, $lengths, PREG_SET_ORDER);

        foreach ($lengths as [, $number, $unit]) {
            expect($unit)->toBe('px', "{$name}.css: {$query}")
                ->and(in_array($number, ['600', '840', '1200', '1600'], true))->toBeTrue("{$name}.css: {$query} is not at an M3 breakpoint");
        }
    }
})->with('action components');

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

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