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

<?php

use Livewire\Component;
use Livewire\Livewire;

/**
 * The opening tag of the first element in the rendered Blade that matches `$tag`.
 */
function chipTag(string $blade, string $tag = '[a-z]+'): string
{
    preg_match('/<(?:'.$tag.')\b[^>]*>/s', (string) test()->blade($blade), $matches);

    return $matches[0] ?? '';
}

it('is an outlined assist chip, a button, by default', function () {
    $html = (string) $this->blade('<x-chip label="Add to calendar" icon="event" icon-right="arrow_drop_down" />');

    expect(chipTag('<x-chip label="Add to calendar" icon="event" class="app-chip-gap" />', 'button'))
        ->toBe('<button class="md-state-layer md-touch-target app-chip-gap" data-md-chip="assist" data-md-icon-start="" type="button">')
        ->and(chipTag('<x-chip label="Add to calendar" icon-right="arrow_drop_down" />', 'button'))
        ->toContain('data-md-icon-end=""')
        ->not->toContain('data-md-icon-start')
        ->and($html)
        ->toMatch('/<svg(?=[^>]*--md-icon-size: 18px)(?=[^>]*data-md-chip-icon)[^>]*>/')
        ->toMatch('/<svg(?=[^>]*--md-icon-size: 18px)(?=[^>]*data-md-chip-trailing)[^>]*>/')
        ->toContain('<span data-md-chip-label>Add to calendar</span>')
        ->toContain('class="md-state-layer md-touch-target"');
});

it('draws a chip at Compose\'s size, corner, type and padding from its stylesheet', function () {
    $css = (string) file_get_contents(__DIR__.'/../../../resources/css/components/chip.css');

    expect($css)->toContain('@layer material.components')
        ->toContain("@import './icon.css';")
        ->toMatch('/\[data-md-chip\] \{[^}]*height: 32px;[^}]*border-radius: var\(--md-sys-shape-corner-sm\);[^}]*font: var\(--md-sys-typescale-label-lg\);/')
        // 16px beside a label and 8px beside an icon, each 1px short for the border.
        ->toContain('padding-inline: 15px;')
        ->toContain('padding-inline-start: 7px;');
});

it('pads a chip without icons by 16px on both sides', function () {
    expect(chipTag('<x-chip label="Go" />', 'button'))
        ->not->toContain('data-md-icon-start')
        ->not->toContain('data-md-icon-end');
});

it('falls back to an assist chip for a type it does not know', function () {
    expect(chipTag('<x-chip type="choice" label="Go" />', 'button'))->toContain('data-md-chip="assist"');
});

it('draws an elevated chip on surface-container-low at elevation 1', function () {
    expect(chipTag('<x-chip label="Share" elevated />', 'button'))->toContain('data-md-elevated=""')
        ->and(chipTag('<x-chip label="Share" />', 'button'))->not->toContain('data-md-elevated')
        // Input chips are flat only.
        ->and(chipTag('<x-chip type="input" label="Anna" elevated />', 'span'))->not->toContain('data-md-elevated')
        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/components/chip.css'))
        ->toMatch('/\[data-md-chip\]\[data-md-elevated\] \{[^}]*background-color: var\(--md-sys-color-surface-container-low\);[^}]*box-shadow: var\(--md-sys-elevation-1\);/');
});

it('greys a disabled chip, flat or elevated', function () {
    expect(chipTag('<x-chip label="Share" icon="share" disabled />', 'button'))
        ->toContain('data-md-disabled=""')
        ->toMatch('/\sdisabled="disabled"/')
        ->and(chipTag('<x-chip label="Share" elevated disabled />', 'button'))
        ->toContain('data-md-elevated=""')
        ->toContain('data-md-disabled=""');
});

it('links with wire:navigate, and a disabled link leaves the tab order', function () {
    expect(chipTag('<x-chip label="Directions" link="/directions" />', 'a'))
        ->toContain('href="/directions"')
        ->toContain('wire:navigate')
        ->not->toContain('type=')
        ->and(chipTag('<x-chip label="Guide" link="https://m3.material.io" external />', 'a'))
        ->toContain('target="_blank"')
        ->toContain('rel="noopener"')
        ->not->toContain('wire:navigate')
        ->and(chipTag('<x-chip label="Directions" link="/directions" disabled />', 'a'))
        ->toContain('aria-disabled="true"')
        ->toContain('tabindex="-1"')
        ->toContain('data-md-disabled=""');
});

it('draws a suggestion chip in on-surface-variant', function () {
    expect(chipTag('<x-chip type="suggestion" label="Sounds good" />', 'button'))
        ->toContain('data-md-chip="suggestion"')
        ->and(chipTag('<x-chip type="suggestion" label="Sounds good" elevated />', 'button'))
        ->toContain('data-md-elevated=""');
});

it('attaches a plain tooltip', function () {
    $html = (string) $this->blade('<x-chip label="Share" tooltip="Share this file" />');

    expect($html)
        ->toContain('popover="manual"')
        ->toContain('Share this file')
        ->toMatch('/<button[^>]*style="anchor-name: --material-chip-[a-z0-9]{10};"/');
});

it('makes a filter chip without a model a toggle button the caller owns', function () {
    $html = (string) $this->blade('<x-chip type="filter" label="Starred" :selected="true" wire:click="toggleStarred" />');

    expect(chipTag('<x-chip type="filter" label="Starred" :selected="true" wire:click="toggleStarred" />', 'button'))
        ->toContain('data-md-chip="filter"')
        ->toContain('aria-pressed="true"')
        ->toContain('wire:click="toggleStarred"')
        ->and(chipTag('<x-chip type="filter" label="Starred" />', 'button'))
        ->toContain('aria-pressed="false"')
        ->and($html)
        ->not->toContain('type="checkbox"')
        ->toContain('<span data-md-chip-check-slot>')
        ->toContain('data-md-chip-check');
});

it('makes a bound filter chip a native checkbox under the chip', function () {
    $html = (string) $this->blade('<x-chip type="filter" label="Photos" value="photos" x-model="kinds" class="app-filter-gap" wire:key="photos" />');

    expect(chipTag('<x-chip type="filter" label="Photos" value="photos" x-model="kinds" class="app-filter-gap" wire:key="photos" />', 'label'))
        ->toBe('<label class="md-state-layer md-touch-target app-filter-gap" data-md-chip="filter" wire:key="photos">')
        ->and(chipTag('<x-chip type="filter" label="Photos" value="photos" x-model="kinds" class="app-filter-gap" />', 'input'))
        ->toContain('type="checkbox"')
        ->toContain('value="photos"')
        ->toContain('x-model="kinds"')
        ->toContain('class="md-visually-hidden"')
        ->not->toContain('app-filter-gap')
        ->not->toContain('checked')
        ->and($html)
        ->toContain('data-md-chip-check');
});

it('submits a named filter chip, checked when selected, and greys a disabled one', function () {
    expect(chipTag('<x-chip type="filter" label="Starred" name="starred" :selected="true" />', 'input'))
        ->toContain('name="starred"')
        ->toContain('checked')
        ->and(chipTag('<x-chip type="filter" label="Starred" name="starred" disabled />', 'input'))
        ->toContain('disabled')
        ->and(chipTag('<x-chip type="filter" label="Starred" name="starred" disabled />', 'label'))
        ->toContain('data-md-disabled=""');
});

it('swaps a filter chip\'s icon for the check when selected', function () {
    $html = (string) $this->blade('<x-chip type="filter" label="Starred" icon="star" name="starred" elevated />');

    expect($html)
        ->toMatch('/<span data-md-chip-check-slot>\s*<svg[^>]*data-md-chip-icon[^>]*>.*?<\/svg>\s*<svg[^>]*data-md-chip-check/s')
        ->toContain('data-md-elevated=""')
        ->and(substr_count($html, '<svg'))->toBe(2)
        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/components/chip.css'))
        ->toContain("[data-md-chip]:is(:has(:checked), [aria-pressed='true']) [data-md-chip-check-slot] [data-md-chip-icon] {");
});

it('draws an input chip with an avatar, an icon or neither', function () {
    expect(chipTag('<x-chip type="input" label="Anna" avatar="AM" />', 'span'))
        ->toContain('data-md-chip="input"')
        ->toContain('data-md-avatar=""')
        ->not->toContain('x-data')
        ->and((string) $this->blade('<x-chip type="input" label="Anna" avatar="AM" />'))
        ->toContain('<span aria-hidden="true" data-md-chip-avatar>AM</span>')
        ->not->toContain('<button')
        ->and((string) $this->blade('<x-chip type="input" label="Anna" avatar="/avatars/anna.jpg" />'))
        ->toContain('<img src="/avatars/anna.jpg" alt="" data-md-chip-avatar />')
        ->and(chipTag('<x-chip type="input" label="report.pdf" icon="picture_as_pdf" />', 'span'))
        ->toContain('data-md-icon-start=""')
        ->not->toContain('data-md-avatar');
});

it('makes an input chip a button when it has its own action, and selects it', function () {
    expect(chipTag('<x-chip type="input" label="Anna" icon="person" :selected="true" wire:click="open(1)" />', 'button'))
        ->toContain('data-md-chip-action')
        ->toContain('aria-pressed="true"')
        ->toContain('wire:click="open(1)"')
        ->and(chipTag('<x-chip type="input" label="Anna" :selected="true" />', 'span'))
        ->toContain('data-md-selected=""')
        // An action of its own lights the leading icon on hover, focus and press.
        ->and(chipTag('<x-chip type="input" label="Anna" icon="person" wire:click="open(1)" />', 'span'))
        ->toContain('data-md-actionable=""')
        ->and(chipTag('<x-chip type="input" label="Anna" icon="person" />', 'span'))
        ->not->toContain('data-md-actionable')
        // An input chip draws its state layer on its action, never a second one on the container.
        ->not->toContain('md-state-layer')
        ->and(chipTag('<x-chip type="input" label="Anna" icon="person" wire:click="open(1)" />', 'button'))
        ->not->toContain('md-state-layer')
        ->not->toContain('md-touch-target');
});

it('gives a removable input chip a named remove button that calls wire:remove', function () {
    $html = (string) $this->blade('<x-chip type="input" label="anna@example.com" removable wire:remove="removeRecipient(3)" name="to[]" value="3" />');

    expect(chipTag('<x-chip type="input" label="anna@example.com" removable wire:remove="removeRecipient(3)" />', 'span'))
        ->toContain('x-data="materialChip"')
        ->toContain('x-on:keydown="removeOnKey($event)"')
        ->toContain('data-md-removable=""')
        ->not->toContain('wire:remove')
        ->and($html)
        ->toContain('data-md-chip-remove aria-label="Remove anna@example.com"')
        ->toContain('wire:click="removeRecipient(3)"')
        ->toContain('x-on:click="removeChip($event)"')
        ->toContain('<input type="hidden" name="to[]" value="3" />')
        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/components/chip.css'))
        // 18px icon, 15px out on every side: M3's 48dp minimum for the close icon's target.
        ->toMatch('/\[data-md-chip-remove\] \{.*?&::after \{\s*content: \'\';\s*position: absolute;\s*inset: -15px;/s');
});

it('runs an Alpine remove expression, or takes the chip off the page with neither', function () {
    expect((string) $this->blade('<x-chip type="input" label="php" removable remove="tags.splice(0, 1)" />'))
        ->toContain('x-on:click="removeChip($event); tags.splice(0, 1)"')
        ->not->toContain('wire:click')
        ->and((string) $this->blade('<x-chip type="input" label="php" removable />'))
        ->toContain('x-on:click="removeChip($event); $root.remove()"');
});

it('leaves a client-rendered chip\'s remove button to be named in the browser', function () {
    expect((string) $this->blade('<x-chip type="input" removable remove="tags.pop()"><span x-text="tag"></span></x-chip>'))
        ->toContain('data-md-chip-remove="Remove :label"')
        ->not->toContain('aria-label=');
});

it('disables a removable input chip and its remove button', function () {
    $html = (string) $this->blade('<x-chip type="input" label="php" removable disabled />');

    expect($html)
        ->toContain('data-md-disabled=""')
        ->toMatch('/<button[^>]*data-md-chip-remove[^>]*disabled/s');
});

it('groups chips in a wrapping row named by its label, with a hint', function () {
    $html = (string) $this->blade('<x-chip-set label="File types" hint="Show only these" class="app-chip-set-gap"><x-chip label="A" /></x-chip-set>');

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

    expect($html)
        ->toMatch('/<div\s+data-md-chip-set\s+role="group"/')
        ->toContain('class="app-chip-set-gap"')
        ->toContain('<div data-md-chip-set-row x-data="materialChipSet"')
        // M3's chip keyboard: the set is one tab stop and the arrows walk it.
        ->toContain('x-on:keydown="key($event)"')
        ->toContain('x-on:focusin="rove($event.target)"')
        ->toContain("id=\"{$labelledBy[1]}\" data-md-chip-set-label>File types</p>")
        ->toContain("id=\"{$describedBy[1]}\" data-md-chip-set-hint>Show only these</p>")
        ->not->toContain('data-md-scroll')
        ->not->toContain('flex-wrap');
});

it('draws the set from its stylesheet: 8px between chips, wrapping unless it scrolls', function () {
    $css = (string) file_get_contents(__DIR__.'/../../../resources/css/components/chip-set.css');

    expect($css)->toContain("@import './chip.css';")
        ->toMatch('/\[data-md-chip-set-row\] \{\s*display: flex;\s*flex-wrap: wrap;\s*gap: var\(--md-sys-measurement-space100\);/')
        ->toContain('[data-md-chip-set-scroller] > [data-md-chip-set-row] {');
});

it('scrolls a chip set on one line with fading edges', function () {
    expect((string) $this->blade('<x-chip-set aria-label="Sort" scroll><x-chip label="A" /></x-chip-set>'))
        ->toContain('aria-label="Sort"')
        ->toMatch('/data-md-chip-set\s+data-md-scroll\s/')
        ->toContain('<div x-data="materialChipSet" data-md-chip-set-scroller>')
        ->toContain('x-ref="row"')
        ->toContain('wire:ignore.self')
        ->and((string) file_get_contents(__DIR__.'/../../../resources/css/components/chip-set.css'))
        ->toContain('overflow-x: auto;')
        ->toContain('--chip-fade-start: var(--md-sys-measurement-space300);');
});

it('puts a scroll button over each fading edge, for a pointer that cannot swipe', function () {
    $html = (string) $this->blade('<x-chip-set aria-label="Sort" scroll><x-chip label="A" /></x-chip-set>');

    expect($html)
        ->toContain('data-md-chip-scroll="start"')
        ->toContain('data-md-chip-scroll="end"')
        ->toContain('x-on:click="nudge(\'start\')"')
        ->toContain('x-on:click="nudge(\'end\')"')
        // A pointer affordance, not a tab stop: the arrows already walk every chip.
        ->toContain('tabindex="-1"')
        ->toContain('aria-hidden="true"')
        ->toContain('data-md-mirror-rtl');

    expect((string) file_get_contents(__DIR__.'/../../../resources/css/components/chip-set.css'))
        // Only while the row can still scroll that way, and only where the pointer is fine.
        ->toMatch("/@media \(pointer: fine\) \{\s*\[data-md-chip-set-row\]\[data-md-scroll-start\] ~ \[data-md-chip-scroll='start'\],\s*\[data-md-chip-set-row\]\[data-md-scroll-end\] ~ \[data-md-chip-scroll='end'\] \{\s*display: grid;/")
        // A chip the keyboard reaches clears the buttons as well as the fade.
        ->toContain('scroll-padding-inline: var(--md-sys-measurement-space500);');

    // A wrapping set has no edge to scroll towards.
    expect((string) $this->blade('<x-chip-set aria-label="Sort"><x-chip label="A" /></x-chip-set>'))
        ->not->toContain('data-md-chip-scroll');
});

it('binds filter chips to a Livewire array and shows the set\'s validation message in place of its hint', function () {
    $component = new class extends Component
    {
        /** @var list<string> */
        public array $kinds = ['photos'];

        public function save(): void
        {
            $this->validate(['kinds' => 'max:1'], ['kinds.max' => 'Pick one kind.']);
        }

        public function render(): string
        {
            return <<<'BLADE'
                <div>
                    <x-chip-set label="Kinds" hint="Show only these" error-field="kinds">
                        <x-chip type="filter" label="Photos" value="photos" wire:model.live="kinds" />
                        <x-chip type="filter" label="Documents" value="documents" wire:model.live="kinds" />
                    </x-chip-set>
                </div>
                BLADE;
        }
    };

    Livewire::test($component)
        ->assertSeeHtml('wire:model.live="kinds"')
        ->assertSeeHtml('value="photos" checked')
        ->assertDontSeeHtml('value="documents" checked')
        ->assertSee('Show only these')
        ->set('kinds', ['photos', 'documents'])
        ->assertSeeHtml('value="documents" checked')
        ->call('save')
        ->assertSee('Pick one kind.')
        ->assertDontSee('Show only these');
});