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

<?php

use NoNameWeb\LivewireMaterial\Tests\Support\ComponentStylesheet;

it('draws each mode, falling back to collapsible', function (string $mode, string $expected) {
    expect((string) $this->blade('<x-navigation-rail :mode="$mode"><x-navigation-rail-item label="Inbox" icon="inbox" link="/inbox" /></x-navigation-rail>', ['mode' => $mode]))
        ->toContain("data-md-navigation-rail=\"{$expected}\"")
        ->toContain('<nav')
        ->toContain('aria-label="Main"');
})->with([
    ['collapsed', 'collapsed'],
    ['expanded', 'expanded'],
    ['collapsible', 'collapsible'],
    ['modal', 'modal'],
    ['adaptive', 'adaptive'],
    ['sideways', 'collapsible'],
]);

it('gives the collapsible, modal and adaptive rails a menu button and the store', function () {
    $collapsible = (string) $this->blade('<x-navigation-rail />');

    expect($collapsible)
        ->toContain('x-data="materialNavigationRail(\'collapsible\', false)"')
        ->toContain('data-md-navigation-rail-menu')
        ->toContain('aria-label="Collapse navigation"')
        ->toContain('aria-expanded="true"')
        // The 40px menu button reaches M3's 48px target through the shared classes (N-01).
        ->toContain('class="md-state-layer md-focus-ring md-touch-target"')
        ->not->toContain('data-md-navigation-rail-scrim')
        ->not->toContain('x-trap')
        ->and((string) $this->blade('<x-navigation-rail mode="modal" />'))
        ->toContain('aria-label="Expand navigation"')
        ->toContain('data-md-navigation-rail-scrim')
        ->toContain('x-trap.inert.noscroll="open"')
        ->and((string) $this->blade('<x-navigation-rail mode="expanded" />'))
        ->not->toContain('data-md-navigation-rail-menu')
        ->not->toContain('x-data')
        ->and((string) $this->blade('<x-navigation-rail mode="collapsible" :menu="false" />'))->not->toContain('data-md-navigation-rail-menu');
});

it('keeps the header and footer out of the scrolling destinations', function () {
    $html = (string) $this->blade(<<<'BLADE'
        <x-navigation-rail mode="expanded" width="320px">
            <x-slot:brand><span>Brand</span></x-slot:brand>
            <x-slot:header><button>FAB</button></x-slot:header>
            <x-navigation-rail-item label="Inbox" icon="inbox" link="/inbox" />
            <x-slot:footer><button>Account</button></x-slot:footer>
        </x-navigation-rail>
        BLADE);

    expect($html)
        ->toContain('--navigation-rail-width: 320px')
        ->toMatch('/data-md-navigation-rail-header.*Brand.*FAB.*data-md-navigation-rail-destinations.*Inbox.*data-md-navigation-rail-footer.*Account/s');
});

it('takes M3\'s optional divider and turns the container fill off', function () {
    expect((string) $this->blade('<x-navigation-rail mode="expanded" divider :fill="false" />'))
        ->toContain('data-md-divider')
        ->toContain('data-md-fill="false"')
        ->and((string) $this->blade('<x-navigation-rail mode="expanded" />'))
        ->not->toContain('data-md-divider')
        ->not->toContain('data-md-fill');

    $css = ComponentStylesheet::read('navigation-rail');

    // Neither reaches a rail open over a scrim, which is a surface over the page (N-22).
    expect($css->declarations('[data-md-navigation-rail][data-md-divider]:not([data-md-open]) > [data-md-navigation-rail-panel]'))
        ->toBe(['border-inline-end' => '1px solid var(--md-sys-color-outline-variant)'])
        ->and($css->declarations('[data-md-navigation-rail][data-md-fill=\'false\']:not([data-md-open]) > [data-md-navigation-rail-panel]'))
        ->toBe(['background-color' => 'transparent'])
        // A collapsible rail is held to its collapsed width where M3 asks for a bar instead (N-24).
        ->and($css->declarations('[data-md-navigation-rail=\'collapsible\']', ['@media (width < 600px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)']);
});

it('takes M3\'s narrow collapsed width, icons alone but still named', function () {
    $narrow = (string) $this->blade('<x-navigation-rail width="narrow"><x-slot:header><button>FAB</button></x-slot:header><x-navigation-rail-item label="Inbox" icon="inbox" link="/inbox" /></x-navigation-rail>');

    expect($narrow)
        ->toContain('data-md-width="narrow"')
        // A narrow rail expands to the same 256px; `width` names one or the other, never both.
        ->toContain('--navigation-rail-width: 256px')
        ->toContain('data-md-navigation-rail-menu-row')
        ->toContain('data-md-navigation-rail-fab-row')
        // The label is still rendered: it is what names the destination.
        ->toContain('<span data-md-navigation-label>Inbox</span>')
        ->and((string) $this->blade('<x-navigation-rail mode="collapsed" width="320px" />'))
        ->not->toContain('data-md-width')
        ->toContain('--navigation-rail-width: 320px');

    $css = ComponentStylesheet::read('navigation-rail');

    // NavigationRailCollapsedTokens.NarrowContainerWidth, 80dp against the default 96dp.
    expect($css->declarations('[data-md-navigation-rail][data-md-width=\'narrow\']'))
        ->toBe(['--navigation-rail-collapsed-width' => '80px'])
        ->and($css->declarations('[data-md-navigation-rail]'))
        ->toHaveKey('--navigation-rail-collapsed-width', '96px')
        // Out of the drawing, not out of the page: clipped only while collapsed.
        ->and($css->declarations("[data-md-navigation-rail][data-md-width='narrow'] [data-md-navigation-rail-item] [data-md-navigation-label]:where( [data-md-navigation-rail='collapsed'], [data-md-navigation-rail='collapsed'] *, [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]), [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]) *, [data-md-navigation-rail='modal']:not([data-md-open]), [data-md-navigation-rail='modal']:not([data-md-open]) * )"))
        ->toHaveKey('clip-path', 'inset(50%)');
});

it('centres the destinations on request, leaving the header and footer at their ends', function () {
    expect((string) $this->blade('<x-navigation-rail mode="collapsed" align="center" />'))
        ->toContain('data-md-align="center"')
        ->and((string) $this->blade('<x-navigation-rail mode="collapsed" />'))->not->toContain('data-md-align')
        ->and((string) $this->blade('<x-navigation-rail mode="collapsed" align="middle" />'))->not->toContain('data-md-align');

    // Only the destinations move, and `safe` gives the top back when there are too many.
    expect(ComponentStylesheet::read('navigation-rail')->declarations("[data-md-navigation-rail][data-md-align='center'] [data-md-navigation-rail-destinations]"))
        ->toBe(['justify-content' => 'safe center']);
});

it('hides a collapsible or adaptive rail entirely when told to, and only those', function () {
    $hiding = (string) $this->blade('<x-navigation-rail hide-when-collapsed />');

    expect($hiding)
        ->toContain('data-md-hide-when-collapsed')
        ->toContain("x-data=\"materialNavigationRail('collapsible', true)\"")
        // It needs the scrim and the focus trap a modal rail has: it comes back over the page.
        ->toContain('data-md-navigation-rail-scrim')
        ->toContain('x-trap.inert.noscroll="open"')
        ->and((string) $this->blade('<x-navigation-rail mode="adaptive" hide-when-collapsed />'))
        ->toContain("x-data=\"materialNavigationRail('adaptive', true)\"")
        // A modal rail is already over the page; the two fixed modes mean what they say.
        ->and((string) $this->blade('<x-navigation-rail mode="modal" hide-when-collapsed />'))
        ->not->toContain('data-md-hide-when-collapsed')
        ->toContain("materialNavigationRail('modal', false)")
        ->and((string) $this->blade('<x-navigation-rail mode="expanded" hide-when-collapsed />'))
        ->not->toContain('data-md-hide-when-collapsed')
        ->and((string) $this->blade('<x-navigation-rail />'))->not->toContain('data-md-hide-when-collapsed');

    $css = ComponentStylesheet::read('navigation-rail');

    expect($css->declarations("[data-md-navigation-rail][data-md-hide-when-collapsed]:where( [data-md-navigation-rail='collapsed'], [data-md-navigation-rail='collapsed'] *, [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]), [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]) *, [data-md-navigation-rail='modal']:not([data-md-open]), [data-md-navigation-rail='modal']:not([data-md-open]) * )"))
        ->toBe(['width' => '0'])
        // The two bands where the window, not the visitor, collapses a rail keep theirs.
        ->and($css->declarations("[data-md-navigation-rail='collapsible'][data-md-hide-when-collapsed]", ['@media (width < 600px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)'])
        ->and($css->declarations("[data-md-navigation-rail='adaptive'][data-md-hide-when-collapsed]", ['@media (600px <= width < 840px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)']);
});

/**
 * The Tailwind-era `rail-collapsed:` custom variant had seven branches for "this rail is drawn
 * collapsed"; navigation-rail.css merges the three that carry no media query into one `:where()`
 * (provably the same match set: an element matches `X:where(A, B, C)` exactly when it matches
 * `X:where(A)` or `X:where(B)` or `X:where(C)`) and keeps the four media-gated ones separate, since
 * CSS cannot merge different `@media` queries into one rule. This pins all five physical branches
 * — and so every one of the seven original conditions — for the rail's own width, the property
 * every branch sets.
 */
it('reproduces every branch of the old rail-collapsed variant for the rail\'s own width', function () {
    $css = ComponentStylesheet::read('navigation-rail');

    // Branches 1-3: a fixed `collapsed` mode; a `collapsible` rail the visitor collapsed and not
    // open; a `modal` rail not open.
    expect($css->declarations("[data-md-navigation-rail]:where( [data-md-navigation-rail='collapsed'], [data-md-navigation-rail='collapsed'] *, [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]), [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]) *, [data-md-navigation-rail='modal']:not([data-md-open]), [data-md-navigation-rail='modal']:not([data-md-open]) * )"))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)'])
        // Branch 4: below `medium` (600px), a `collapsible` rail regardless of choice.
        ->and($css->declarations("[data-md-navigation-rail]:where([data-md-navigation-rail='collapsible']:not([data-md-open]), [data-md-navigation-rail='collapsible']:not([data-md-open]) *)", ['@media (width < 600px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)'])
        // Branch 5: below `expanded` (840px), an `adaptive` rail not open.
        ->and($css->declarations("[data-md-navigation-rail]:where([data-md-navigation-rail='adaptive']:not([data-md-open]), [data-md-navigation-rail='adaptive']:not([data-md-open]) *)", ['@media (width < 840px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)'])
        // Branch 6: at `expanded` (840-1199), an `adaptive` rail not open, chosen collapsed or no
        // choice yet (`data-rail-auto`).
        ->and($css->declarations("[data-md-navigation-rail]:where( :is([data-rail='collapsed'], [data-rail-auto]) [data-md-navigation-rail='adaptive']:not([data-md-open]), :is([data-rail='collapsed'], [data-rail-auto]) [data-md-navigation-rail='adaptive']:not([data-md-open]) * )", ['@media (840px <= width < 1200px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)'])
        // Branch 7: from `large` (1200px), an `adaptive` rail not open, only when chosen collapsed —
        // M3 starts it expanded there by default.
        ->and($css->declarations("[data-md-navigation-rail]:where( [data-rail='collapsed'] [data-md-navigation-rail='adaptive']:not([data-md-open]), [data-rail='collapsed'] [data-md-navigation-rail='adaptive']:not([data-md-open]) * )", ['@media (width >= 1200px)']))
        ->toBe(['width' => 'var(--navigation-rail-collapsed-width)']);
});

it('flattens a FAB nested in the rail header and morphs its label', function () {
    $css = ComponentStylesheet::read('navigation-rail');

    // A nested FAB rests at elevation 0, not the 3 a standalone one has (N-03). Now layered, like
    // toolbar.css's own docked-FAB override: fab.css's `[data-md-fab]` is one attribute, so the
    // doubled selector here (two) always wins without needing to sit outside the layer.
    expect($css->declarations('[data-md-navigation-rail-header] [data-md-fab][data-md-fab], [data-md-navigation-rail-header] [data-md-fab][data-md-fab]:hover'))
        ->toBe(['box-shadow' => 'none'])
        // One FAB whose label springs shut, not two swapped by display (N-23).
        ->and($css->declarations('[data-md-navigation-rail-header] [data-md-fab] > span'))
        ->toHaveKey('max-width', '256px');

    expect($css->declarations("[data-md-navigation-rail-header] [data-md-fab] > span:where( [data-md-navigation-rail='collapsed'], [data-md-navigation-rail='collapsed'] *, [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]), [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]) *, [data-md-navigation-rail='modal']:not([data-md-open]), [data-md-navigation-rail='modal']:not([data-md-open]) * )"))
        ->toBe(['max-width' => '0', 'opacity' => '0'])
        ->and($css->declarations("[data-md-navigation-rail-header] [data-md-fab][data-md-extended]:where( [data-md-navigation-rail='collapsed'], [data-md-navigation-rail='collapsed'] *, [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]), [data-rail='collapsed'] [data-md-navigation-rail='collapsible']:not([data-md-open]) *, [data-md-navigation-rail='modal']:not([data-md-open]), [data-md-navigation-rail='modal']:not([data-md-open]) * )"))
        ->toBe(['min-inline-size' => '0', 'aspect-ratio' => '1', 'gap' => '0']);
});

it('draws a destination in both shapes, with its count on the icon and at the end', function () {
    $html = (string) $this->blade('<x-navigation-rail-item label="Inbox" icon="inbox" link="/inbox" active badge="12" />');

    expect($html)
        ->toContain('<a data-md-navigation-rail-item')
        ->toContain('wire:navigate')
        ->toContain('aria-current="page"')
        ->toContain('data-md-navigation-indicator')
        ->toContain('<span data-md-navigation-label>Inbox</span>')
        ->toContain('data-md-navigation-badge-icon')
        ->toContain('data-md-navigation-badge-end')
        ->toContain('<span class="md-visually-hidden">, 12</span>')
        ->and(substr_count($html, '>12</span>'))->toBe(2)
        ->and((string) $this->blade('<x-navigation-rail-item label="Inbox" icon="inbox" link="/inbox" no-wire-navigate />'))->not->toContain('wire:navigate')
        ->and((string) $this->blade('<x-navigation-rail-item label="Inbox" icon="inbox" />'))->toContain('<button data-md-navigation-rail-item');
});

it('groups destinations under a heading that names the group', function () {
    $html = (string) $this->blade('<x-navigation-rail-section label="Labels"><x-navigation-rail-item label="Travel" icon="flight" link="/travel" /></x-navigation-rail-section>');

    preg_match('/aria-labelledby="([^"]+)"/', $html, $labelledBy);

    expect($html)->toContain('role="group"')
        ->and($labelledBy[1] ?? null)->not->toBeNull()
        ->and($html)->toContain("<p id=\"{$labelledBy[1]}\" data-md-navigation-rail-heading>Labels</p>");
});

it('draws the item\'s own state layer split between the item and its indicator', function () {
    $item = ComponentStylesheet::read('navigation-rail-item');

    expect($item->declarations('[data-md-navigation-rail-item]'))
        ->toHaveKeys(['--navigation-item-layer', '--navigation-indicator-layer'])
        ->and($item->declarations('[data-md-navigation-rail-item][data-md-navigation-rail-item]::before'))
        ->toBe(['background-color' => 'var(--md-sys-color-on-secondary-container)', 'opacity' => 'var(--navigation-item-layer)'])
        ->and($item->declarations('[data-md-navigation-rail-item][data-md-navigation-rail-item] [data-md-navigation-indicator]::before'))
        ->toBe(['background-color' => 'var(--md-sys-color-on-secondary-container)', 'opacity' => 'var(--navigation-indicator-layer)']);
});

/**
 * Plain CSS has no variant to name "drawn collapsed" once, so every rule with a collapsed shape
 * writes the conditions out: navigation-rail.css, navigation-rail-item.css,
 * navigation-rail-section.css, and layout/scaffold.css for the actions row inside the rail's footer.
 * This walks every copy in those files — not one pinned rule — and fails if any drifts from the
 * seven conditions the Tailwind-era `rail-collapsed:` variant had, or if a rule has its collapsed
 * shape in some window bands but not in all five.
 */
dataset('stylesheets that draw a collapsed rail', [
    'navigation-rail',
    'navigation-rail-item',
    'navigation-rail-section',
    '../layout/scaffold',
]);

it('writes "collapsed" with the same seven conditions in every copy, in every band', function (string $name) {
    $closed = ':not([data-md-open])';
    $bands = [
        'always' => ["[data-md-navigation-rail='collapsed']", "[data-rail='collapsed'] [data-md-navigation-rail='collapsible']{$closed}", "[data-md-navigation-rail='modal']{$closed}"],
        '@media (width < 600px)' => ["[data-md-navigation-rail='collapsible']{$closed}"],
        '@media (width < 840px)' => ["[data-md-navigation-rail='adaptive']{$closed}"],
        '@media (840px <= width < 1200px)' => [":is([data-rail='collapsed'], [data-rail-auto]) [data-md-navigation-rail='adaptive']{$closed}"],
        '@media (width >= 1200px)' => ["[data-rail='collapsed'] [data-md-navigation-rail='adaptive']{$closed}"],
    ];

    // A condition matches the rail itself and everything in it; the scaffold's actions row can only
    // ever be inside a rail, so its copy keeps the descendant half alone.
    $both = fn (array $conditions): array => array_merge(...array_map(fn (string $condition): array => [$condition, "{$condition} *"], $conditions));
    $inside = fn (array $conditions): array => array_map(fn (string $condition): string => "{$condition} *", $conditions);

    $groups = [];

    foreach (ComponentStylesheet::read($name)->rules() as $rule) {
        preg_match_all('/:where\(((?:[^()]++|\((?1)\))*)\)/', $rule['selector'], $wheres, PREG_SET_ORDER);
        $wheres = array_filter($wheres, fn (array $where): bool => str_contains($where[1], 'data-md-navigation-rail='));

        if ($wheres === []) {
            continue;
        }

        $media = array_values(array_filter($rule['at'], fn (string $at): bool => str_starts_with($at, '@media')));
        $band = match ($media) {
            [] => 'always',
            ['@media (width >= 840px)', '@media (width < 1200px)'] => '@media (840px <= width < 1200px)',
            default => implode(' › ', $media),
        };

        expect(array_key_exists($band, $bands))->toBeTrue("{$name}.css: `{$rule['selector']}` sits in {$band}, which is no band of the rail's");

        foreach ($wheres as [$where, $conditions]) {
            $written = array_map(trim(...), preg_split('/,(?![^()]*\))/', $conditions));

            expect(in_array($written, [$both($bands[$band]), $inside($bands[$band])], true))
                ->toBeTrue("{$name}.css: `{$where}` in {$band} is not the rail's collapsed conditions for that band");
        }

        $key = str_replace(array_column($wheres, 0), '', $rule['selector']).' '.json_encode($rule['declarations']);
        $groups[$key][] = $band;
    }

    expect($groups)->not->toBeEmpty();

    foreach ($groups as $key => $found) {
        expect(array_values(array_unique($found)))->toEqualCanonicalizing(array_keys($bands), "{$name}.css: {$key} is drawn collapsed in some bands only");
    }
})->with('stylesheets that draw a collapsed rail');