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

<?php

use Livewire\Component;
use Livewire\Livewire;
use NoNameWeb\LivewireMaterial\Tests\Support\ComponentStylesheet;

it('groups buttons with the spacing of their size', function (string $size, string $gap) {
    expect((string) $this->blade("<x-button-group label=\"Views\" size=\"{$size}\"><x-button label=\"Day\" /></x-button-group>"))
        ->toMatch("/<div\\s+role=\"group\"\\s+aria-label=\"Views\"\\s+data-md-button-group=\"standard\"\\s+data-md-size=\"{$size}\"\\s+data-md-shape=\"round\"/")
        ->not->toContain('class=')
        ->and(ComponentStylesheet::read('button-group')->declarations(in_array($size, ['xs', 'sm'], true)
            ? "[data-md-button-group='standard'][data-md-size='{$size}']"
            : "[data-md-button-group='standard']"))->toBe(['gap' => $gap]);
})->with([
    'xs' => ['xs', '18px'],
    'sm' => ['sm', '12px'],
    'md' => ['md', 'var(--md-sys-measurement-space100)'],
    'lg' => ['lg', 'var(--md-sys-measurement-space100)'],
    'xl' => ['xl', 'var(--md-sys-measurement-space100)'],
]);

it('connects buttons 2px apart, with M3\'s inner corners', function () {
    $css = ComponentStylesheet::read('button-group');

    expect((string) $this->blade('<x-button-group connected><x-button label="Day" /></x-button-group>'))->toContain('data-md-button-group="connected"')
        ->and($css->declarations("[data-md-button-group='connected']"))->toBe(['gap' => 'var(--md-sys-measurement-space25)'])
        ->and($css->declarations("[data-md-button-group='connected'] > *"))->toMatchArray([
            '--md-button-group-corner' => 'var(--md-button-group-inner)',
            'border-start-start-radius' => 'var(--md-button-group-corner)',
        ])
        ->and($css->declarations("[data-md-button-group='connected'] > :active"))->toBe(['--md-button-group-corner' => 'var(--md-button-group-inner-pressed)'])
        ->and($css->declarations("[data-md-button-group='connected'] > :first-child"))->toBe([
            'border-start-start-radius' => 'var(--md-button-group-outer)',
            'border-end-start-radius' => 'var(--md-button-group-outer)',
        ])
        // Half the height, never 9999px, which would scale the small inner corners away.
        ->and($css->declarations("[data-md-button-group][data-md-size='xl']"))->toMatchArray(['--md-button-group-full' => '68px', '--md-button-group-inner' => 'var(--md-sys-shape-corner-lg-increased)']);
});

it('squares a group', function () {
    // M3 lists "Default shape | Round, square" as a button-group configuration; the shape covers
    // every button in the group, so it need not be written on each one.
    $css = ComponentStylesheet::read('button-group');

    expect((string) $this->blade('<x-button-group shape="square"><x-button label="Day" /></x-button-group>'))
        ->toContain('data-md-shape="square"')
        ->and((string) $this->blade('<x-button-group connected shape="square"><x-button label="Day" /></x-button-group>'))
        ->toContain('data-md-button-group="connected"')
        ->toContain('data-md-shape="square"')
        ->and((string) $this->blade('<x-button-group shape="oval"><x-button label="Day" /></x-button-group>'))
        ->toContain('data-md-shape="round"')
        ->and($css->declarations("[data-md-button-group='standard'][data-md-shape='square'] > *"))->toBe(['border-radius' => 'var(--md-button-group-square)'])
        ->and($css->declarations("[data-md-button-group='standard'][data-md-shape='square'] > [aria-pressed='true']"))->toBe(['border-radius' => 'var(--md-button-group-full)']);
});

it('widens a pressed label button while its neighbours give way', function () {
    $css = ComponentStylesheet::read('button-group');

    expect($css->declarations("[data-md-button-group='standard'] > :not([data-md-icon-button]):active:not(:disabled, [aria-disabled='true'])"))
        ->toBe(['padding-inline' => 'calc(var(--md-button-group-pad) + var(--md-button-group-grow))'])
        ->and($css->declarations("[data-md-button-group='standard'] > :not([data-md-icon-button]):active:not(:disabled, [aria-disabled='true']) + :not([data-md-icon-button])"))
        ->toBe(['padding-inline-start' => 'calc(var(--md-button-group-pad) - var(--md-button-group-grow))'])
        ->and($css->declarations("[data-md-button-group][data-md-size='lg']"))->toMatchArray(['--md-button-group-pad' => 'var(--md-sys-measurement-space600)', '--md-button-group-grow' => '16px']);
});

it('takes over aria-pressed for a group that carries a selection', function () {
    $html = (string) $this->blade('<x-button-group connected selection="single" required label="View"><x-button label="Day" value="day" :selected="true" /></x-button-group>');

    expect($html)
        ->toContain('data-md-selection="single"')
        ->toContain('data-md-selection-required')
        ->toContain('multiple: false')
        ->toContain('required: true')
        ->toContain('value: null')
        ->toContain('x-on:click="press($event)"')
        // No model: the group takes the state from the buttons' own aria-pressed and goes on.
        ->toContain('x-modelable="value"')
        ->and((string) $this->blade('<x-button-group connected selection="multi"><x-button label="Bold" value="bold" :selected="false" /></x-button-group>'))
        ->toContain('multiple: true')
        ->toContain('required: false')
        ->toContain('value: []')
        ->and((string) $this->blade('<x-button-group connected><x-button label="Day" /></x-button-group>'))
        ->not->toContain('data-md-selection')
        ->not->toContain('press($event)');
});

it('entangles a selection group with the property it binds, and keeps wire:model off the div', function () {
    $component = new class extends Component
    {
        public string $view = 'week';

        public function render(): string
        {
            return <<<'BLADE'
                <div>
                    <x-button-group connected selection="single" required wire:model.live="view" label="View">
                        <x-button label="Day" value="day" :selected="$view === 'day'" />
                        <x-button label="Week" value="week" :selected="$view === 'week'" />
                    </x-button-group>
                </div>
                BLADE;
        }
    };

    $html = Livewire::test($component)->assertSet('view', 'week')->html();

    expect($html)
        ->toContain('data-md-selection="single"')
        ->toMatch('/value: window\.Livewire\.find\(/')
        ->and(substr_count($html, 'wire:model.live="view"'))->toBe(0);
});

it('never wraps a group onto a second line', function () {
    expect(ComponentStylesheet::read('button-group')->declarations('[data-md-button-group]'))->toMatchArray(['display' => 'inline-flex'])
        ->not->toHaveKey('flex-wrap');
});

it('marks icon buttons, which keep their width when a group is pressed', function () {
    expect((string) $this->blade('<x-button icon="format_bold" aria-label="Bold" />'))->toContain('data-md-icon-button')
        ->and((string) $this->blade('<x-button label="Bold" />'))->not->toContain('data-md-icon-button');
});