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

<?php

use Livewire\Component;
use Livewire\Livewire;

it('renders the tablist on the server with the first enabled tab chosen', function () {
    $html = (string) $this->blade(<<<'BLADE'
        <x-tabs id="share" :tabs="[['name' => 'files', 'label' => 'Files', 'disabled' => true], ['name' => 'people', 'label' => 'People', 'icon' => 'group', 'badge' => 3]]">
            <x-tab name="people">Anna</x-tab>
        </x-tabs>
        BLADE);

    expect($html)
        ->toContain('role="tablist"')
        ->toContain('data-variant="primary"')
        ->toContain('id="share-people"')
        ->toContain('aria-controls="share-people-panel"')
        ->toMatch('/data-tab="people"\s+aria-controls="share-people-panel"\s+aria-selected="true"\s+tabindex="0"/')
        ->toMatch('/data-tab="files"\s+aria-controls="share-files-panel"\s+aria-selected="false"\s+tabindex="-1"/')
        ->toContain('disabled')
        ->toContain('data-tab-indicator')
        ->toContain('--tabs-indicator: share-indicator')
        ->toContain('x-modelable="selected"')
        // The panel's id is the server's, so aria-controls never dangles (N-05).
        ->toMatch('/role="tabpanel"\s+id="share-people-panel"\s+aria-labelledby="share-people"/')
        ->toContain('>3</span>');
});

it('renders every panel but the chosen one hidden, before Alpine boots', function () {
    $html = (string) $this->blade(<<<'BLADE'
        <x-tabs :tabs="[['name' => 'files', 'label' => 'Files'], ['name' => 'people', 'label' => 'People']]" selected="people">
            <x-tab name="files">Three files.</x-tab>
            <x-tab name="people">Anna and Ben.</x-tab>
        </x-tabs>
        BLADE);

    expect($html)
        ->toMatch('/id="[^"]+-files-panel"[^>]*style="display: none"/')
        ->toMatch('/id="[^"]+-people-panel"(?![^>]*style="display: none")/')
        // The tab button and its panel agree on the id the slot worked out for itself.
        ->toMatch('/aria-controls="(tabs-[0-9a-f]{8})-people-panel"/')
        ->toMatch('/id="(tabs-[0-9a-f]{8})-people-panel"/');
});

it('takes a variant, stacks icons and scrolls on request', function () {
    expect((string) $this->blade('<x-tabs variant="secondary" stacked scrollable :tabs="[[\'name\' => \'a\', \'label\' => \'A\']]" />'))
        ->toContain('data-variant="secondary"')
        ->not->toContain('data-stacked')
        ->toContain('data-scrollable')
        ->and((string) $this->blade('<x-tabs stacked selected="b" :tabs="[[\'name\' => \'a\', \'label\' => \'A\'], [\'name\' => \'b\', \'label\' => \'B\']]" />'))
        ->toContain('data-stacked')
        ->toMatch('/data-tab="b"\s+aria-controls="[^"]+"\s+aria-selected="true"/');
});

it('entangles the chosen tab with Livewire and renders the one the property names', function () {
    Livewire::component('tabs-probe', new class extends Component
    {
        public string $tab = 'people';

        public function render(): string
        {
            return '<div><x-tabs wire:model.live="tab" :tabs="[[\'name\' => \'files\', \'label\' => \'Files\'], [\'name\' => \'people\', \'label\' => \'People\']]"><x-tab name="files">Three files.</x-tab><x-tab name="people">Anna and Ben.</x-tab></x-tabs></div>';
        }
    });

    expect(Livewire::test('tabs-probe')->html())
        ->toContain(".entangle('tab').live")
        ->not->toContain('x-modelable')
        ->toMatch('/data-tab="people"\s+aria-controls="[^"]+"\s+aria-selected="true"/')
        // The panel the property names is the one drawn, before Alpine entangles anything (N-05).
        ->toMatch('/id="[^"]+-files-panel"[^>]*style="display: none"/')
        ->toMatch('/id="[^"]+-people-panel"(?![^>]*style="display: none")/');
});

it('keeps the tab bar on M3\'s offsets, indicator inset and focus ring', function () {
    $css = file_get_contents(__DIR__.'/../../../resources/css/components/tabs.css');

    expect($css)
        // 52dp before the first of a scrollable set (N-10).
        ->toContain("[data-tabs-bar][data-scrollable] {\n        padding-inline-start: 3.25rem;")
        // A primary indicator is inset 2dp each side; a secondary one spans the tab (N-18).
        ->toMatch('/\[data-tab-indicator\] \{\s+position: absolute;\s+inset-inline: 2px;/')
        ->toMatch('/\[data-variant="secondary"\] \[data-tab-indicator\] \{\s+inset-inline: 0;/')
        // The ring is 2px outside, as everywhere else in the package (N-20).
        ->toContain('outline-offset: 2px;')
        ->not->toContain('outline-offset: -3px;')
        // A link marked as the page is the chosen tab too (N-21).
        ->toContain('[data-tab]:is([aria-selected="true"], [aria-current="page"]) {');
});

it('draws section navigation as secondary tabs and a picker', function () {
    $html = (string) $this->blade(<<<'BLADE'
        <x-section-nav label="Settings" :items="[
            ['title' => 'Profile', 'icon' => 'person', 'url' => '/settings/profile'],
            ['title' => 'Security', 'icon' => 'lock', 'url' => '/settings/security', 'active' => true, 'badge' => 1],
        ]" />
        BLADE);

    expect($html)
        ->toContain('aria-label="Settings"')
        ->toContain('data-section-picker')
        ->toContain('data-variant="secondary"')
        ->toContain('max-medium:hidden')
        ->toMatch('/href="\/settings\/security"\s+data-tab\s+aria-current="page"\s+wire:navigate/')
        ->not->toMatch('/href="\/settings\/profile"\s+data-tab\s+aria-current/')
        // The picker is a menu of places: the current one is the page, not a checked choice,
        // and a section's badge shows there as well as on its tab.
        ->not->toContain('role="menuitemcheckbox"')
        ->toMatch('/role="menuitem"[^>]*aria-current="page"[^>]*href="\/settings\/security"/')
        ->toMatch('/data-section-picker.*Security.*>\s*1\s*<.*<nav/s');
});

it('marks the section whose url is the request\'s, and scrolls many sections', function () {
    $this->get('/');

    $items = collect(range(1, 7))->map(fn (int $n): array => ['title' => "S{$n}", 'url' => $n === 3 ? url('/') : "/s/{$n}"])->all();

    expect((string) $this->blade('<x-section-nav :items="$items" no-wire-navigate />', ['items' => $items]))
        // Five or more sections are M3's scrollable tabs, not a grid of wrapped rows (N-16).
        ->toMatch('/<ul data-tabs-bar data-variant="secondary"\s+data-scrollable\s*>/')
        ->not->toContain('grid-cols-')
        ->toMatch('/data-tab\s+aria-current="page"\s*>\s*<span data-tab-content>\s*<span class="truncate">S3/')
        ->not->toContain('wire:navigate')
        // Four still share the row.
        ->and((string) $this->blade('<x-section-nav :items="$items" no-wire-navigate />', ['items' => array_slice($items, 0, 4)]))
        ->not->toContain('data-scrollable');
});

it('keeps the page\'s section current while a Livewire component on it updates', function () {
    Livewire::component('section-nav-probe', new class extends Component
    {
        public string $page = '';

        public function mount(): void
        {
            $this->page = url()->current();
        }

        public function render(): string
        {
            return '<div><x-section-nav :items="[[\'title\' => \'Here\', \'url\' => $page], [\'title\' => \'Elsewhere\', \'url\' => \'/elsewhere\']]" no-wire-navigate /></div>';
        }
    });

    $current = '/href="[^"]*\/livewire-unit-test-endpoint\/[^"]*"\s+data-tab\s+aria-current="page"/';

    $probe = Livewire::test('section-nav-probe');

    expect($probe->html())->toMatch($current)
        ->and($probe->call('$refresh')->html())->toMatch($current)
        // Once as the tab, once as the picker's item: one section, drawn for both widths.
        ->and(substr_count($probe->html(), 'aria-current="page"'))->toBe(2);
});