ComponentRenderTest.php

<?php

declare (strict_types=1);
namespace Drupal\KernelTests\Components;

use Drupal\Core\Render\BubbleableMetadata;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\Template\Attribute;
use Drupal\Core\Theme\ComponentPluginManager;
use Drupal\Core\Render\Component\Exception\InvalidComponentDataException;
use Drupal\Tests\Core\Theme\Component\ComponentKernelTestBase;

/**
 * Tests the correct rendering of components.
 *
 * @group sdc
 */
class ComponentRenderTest extends ComponentKernelTestBase {
    use StringTranslationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'sdc_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected static $themes = [
        'sdc_theme_test',
    ];
    
    /**
     * Test that components render correctly.
     */
    public function testRender() : void {
        $this->checkIncludeDefaultContent();
        $this->checkIncludeDataMapping();
        $this->checkEmbedWithNested();
        $this->checkPropValidation();
        $this->checkArrayObjectTypeCast();
        $this->checkNonExistingComponent();
        $this->checkLibraryOverrides();
        $this->checkAttributeMerging();
        $this->checkRenderElementAlters();
        $this->checkSlots();
        $this->checkInvalidSlot();
        $this->checkEmptyProps();
    }
    
    /**
     * Check using a component with an include and default context.
     */
    protected function checkIncludeDefaultContent() : void {
        $build = [
            '#type' => 'inline_template',
            '#template' => "{% embed('sdc_theme_test_base:my-card-no-schema') %}{% block card_body %}Foo bar{% endblock %}{% endembed %}",
        ];
        $crawler = $this->renderComponentRenderArray($build);
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test_base:my-card-no-schema"] .component--my-card-no-schema__body:contains("Foo bar")'));
    }
    
    /**
     * Check using a component with an include and no default context.
     *
     * This covers passing a render array to a 'string' prop, and mapping the
     * prop to a context variable.
     */
    protected function checkIncludeDataMapping() : void {
        $content = [
            'label' => [
                '#type' => 'html_tag',
                '#tag' => 'span',
                '#value' => 'Another button ç',
            ],
        ];
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
            ],
            '#template' => "{{ include('sdc_test:my-button', { text: content.label, iconType: 'external' }, with_context = false) }}",
        ];
        $crawler = $this->renderComponentRenderArray($build);
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper button:contains("Another button ç")'));
    }
    
    /**
     * Render a card with slots that include a CTA component.
     */
    protected function checkEmbedWithNested() : void {
        $content = [
            'heading' => [
                '#type' => 'html_tag',
                '#tag' => 'span',
                '#value' => 'Just a link',
            ],
        ];
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
            ],
            '#template' => "{% embed 'sdc_theme_test:my-card' with { header: 'Card header', content: content } only %}{% block card_body %}This is a card with a CTA {{ include('sdc_test:my-cta', { text: content.heading, href: 'https://www.example.org', target: '_blank' }, with_context = false) }}{% endblock %}{% endembed %}",
        ];
        $crawler = $this->renderComponentRenderArray($build);
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test:my-card"] h2.component--my-card__header:contains("Card header")'));
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test:my-card"] .component--my-card__body:contains("This is a card with a CTA")'));
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test:my-card"] .component--my-card__body a[data-component-id="sdc_test:my-cta"]:contains("Just a link")'));
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test:my-card"] .component--my-card__body a[data-component-id="sdc_test:my-cta"][href="https://www.example.org"][target="_blank"]'));
        // Now render a component and assert it contains the debug comments.
        $build = [
            '#type' => 'component',
            '#component' => 'sdc_test:my-banner',
            '#props' => [
                'heading' => $this->t('I am a banner'),
                'ctaText' => $this->t('Click me'),
                'ctaHref' => 'https://www.example.org',
                'ctaTarget' => '',
            ],
            '#slots' => [
                'banner_body' => [
                    '#type' => 'html_tag',
                    '#tag' => 'p',
                    '#value' => $this->t('This is the contents of the banner body.'),
                ],
            ],
        ];
        $metadata = new BubbleableMetadata();
        $this->renderComponentRenderArray($build, $metadata);
        $this->assertEquals([
            'core/components.sdc_test--my-cta',
            'core/components.sdc_test--my-banner',
        ], $metadata->getAttachments()['library']);
    }
    
    /**
     * Check using the libraryOverrides.
     */
    protected function checkLibraryOverrides() : void {
        $build = [
            '#type' => 'inline_template',
            '#template' => "{{ include('sdc_theme_test:lib-overrides') }}",
        ];
        $metadata = new BubbleableMetadata();
        $this->renderComponentRenderArray($build, $metadata);
        $this->assertEquals([
            'core/components.sdc_theme_test--lib-overrides',
        ], $metadata->getAttachments()['library']);
    }
    
    /**
     * Ensures the schema violations are reported properly.
     */
    protected function checkPropValidation() : void {
        // 1. Violates the minLength for the text property.
        $content = [
            'label' => '1',
        ];
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
            ],
            '#template' => "{{ include('sdc_test:my-button', { text: content.label, iconType: 'external' }, with_context = false) }}",
        ];
        try {
            $this->renderComponentRenderArray($build);
            $this->fail('Invalid prop did not cause an exception');
        } catch (\Throwable $e) {
            $this->addToAssertionCount(1);
        }
        // 2. Violates the required header property.
        $build = [
            '#type' => 'inline_template',
            '#context' => [],
            '#template' => "{{ include('sdc_theme_test:my-card', with_context = false) }}",
        ];
        try {
            $this->renderComponentRenderArray($build);
            $this->fail('Invalid prop did not cause an exception');
        } catch (\Throwable $e) {
            $this->addToAssertionCount(1);
        }
    }
    
    /**
     * Ensure fuzzy coercing of arrays and objects works properly.
     */
    protected function checkArrayObjectTypeCast() : void {
        $content = [
            'test' => [],
        ];
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
            ],
            '#template' => "{{ include('sdc_test:array-to-object', { testProp: content.test }, with_context = false) }}",
        ];
        try {
            $this->renderComponentRenderArray($build);
            $this->addToAssertionCount(1);
        } catch (\Throwable $e) {
            $this->fail('Empty array was not converted to object');
        }
    }
    
    /**
     * Ensures that including an invalid component creates an error.
     */
    protected function checkNonExistingComponent() : void {
        $build = [
            '#type' => 'inline_template',
            '#context' => [],
            '#template' => "{{ include('sdc_test:INVALID', with_context = false) }}",
        ];
        try {
            $this->renderComponentRenderArray($build);
            $this->fail('Invalid prop did not cause an exception');
        } catch (\Throwable $e) {
            $this->addToAssertionCount(1);
        }
    }
    
    /**
     * Ensures the attributes are merged properly.
     */
    protected function checkAttributeMerging() : void {
        $content = [
            'label' => 'I am a labels',
        ];
        // 1. Check that if it exists Attribute object in the 'attributes' prop, you
        // get them merged.
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
                'attributes' => new Attribute([
                    'data-merged-attributes' => 'yes',
                ]),
            ],
            '#template' => "{{ include('sdc_test:my-button', { text: content.label, iconType: 'external', attributes: attributes }, with_context = false) }}",
        ];
        $crawler = $this->renderComponentRenderArray($build);
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-merged-attributes="yes"][data-component-id="sdc_test:my-button"]'), $crawler->outerHtml());
        // 2. Check that if the 'attributes' exists, but there is some other data
        // type, then we don't touch it.
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
                'attributes' => 'hard-coded-attr',
            ],
            '#template' => "{{ include('sdc_theme_test_base:my-card-no-schema', { header: content.label, attributes: attributes }, with_context = false) }}",
        ];
        $crawler = $this->renderComponentRenderArray($build);
        // The default data attribute should be missing.
        $this->assertEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test_base:my-card-no-schema"]'), $crawler->outerHtml());
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [hard-coded-attr]'), $crawler->outerHtml());
        // 3. Check that if the 'attributes' is empty, we get the defaults.
        $build = [
            '#type' => 'inline_template',
            '#context' => [
                'content' => $content,
            ],
            '#template' => "{{ include('sdc_theme_test_base:my-card-no-schema', { header: content.label }, with_context = false) }}",
        ];
        $crawler = $this->renderComponentRenderArray($build);
        // The default data attribute should not be missing.
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_theme_test_base:my-card-no-schema"]'), $crawler->outerHtml());
    }
    
    /**
     * Ensures the alter callbacks work properly.
     */
    public function checkRenderElementAlters() : void {
        $build = [
            '#type' => 'component',
            '#component' => 'sdc_test:my-banner',
            '#props' => [
                'heading' => $this->t('I am a banner'),
                'ctaText' => $this->t('Click me'),
                'ctaHref' => 'https://www.example.org',
                'ctaTarget' => '',
            ],
            '#propsAlter' => [
                fn($props) => [
                    $props,
                    'heading' => $this->t('I am another banner'),
                ],
            ],
            '#slots' => [
                'banner_body' => [
                    '#type' => 'html_tag',
                    '#tag' => 'p',
                    '#value' => $this->t('This is the contents of the banner body.'),
                ],
            ],
            '#slotsAlter' => [
                static fn($slots) => [
                    $slots,
                    'banner_body' => [
                        '#markup' => '<h2>Just something else.</h2>',
                    ],
                ],
            ],
        ];
        $crawler = $this->renderComponentRenderArray($build);
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_test:my-banner"] .component--my-banner--header h3:contains("I am another banner")'));
        $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_test:my-banner"] .component--my-banner--body:contains("Just something else.")'));
    }
    
    /**
     * Ensure that the slots allow a render array or a scalar when using the render element.
     */
    public function checkSlots() : void {
        $slots = [
            'This is the contents of the banner body.',
            [
                '#plain_text' => 'This is the contents of the banner body.',
            ],
        ];
        foreach ($slots as $slot) {
            $build = [
                '#type' => 'component',
                '#component' => 'sdc_test:my-banner',
                '#props' => [
                    'heading' => $this->t('I am a banner'),
                    'ctaText' => $this->t('Click me'),
                    'ctaHref' => 'https://www.example.org',
                    'ctaTarget' => '',
                ],
                '#slots' => [
                    'banner_body' => $slot,
                ],
            ];
            $crawler = $this->renderComponentRenderArray($build);
            $this->assertNotEmpty($crawler->filter('#sdc-wrapper [data-component-id="sdc_test:my-banner"] .component--my-banner--body:contains("This is the contents of the banner body.")'));
        }
    }
    
    /**
     * Ensure that the slots throw an error for invalid slots.
     */
    public function checkInvalidSlot() : void {
        $build = [
            '#type' => 'component',
            '#component' => 'sdc_test:my-banner',
            '#props' => [
                'heading' => $this->t('I am a banner'),
                'ctaText' => $this->t('Click me'),
                'ctaHref' => 'https://www.example.org',
                'ctaTarget' => '',
            ],
            '#slots' => [
                'banner_body' => new \stdClass(),
            ],
        ];
        $this->expectException(InvalidComponentDataException::class);
        $this->expectExceptionMessage('Unable to render component "sdc_test:my-banner". A render array or a scalar is expected for the slot "banner_body" when using the render element with the "#slots" property');
        $this->renderComponentRenderArray($build);
    }
    
    /**
     * Ensure that components can have 0 props.
     */
    public function checkEmptyProps() : void {
        $build = [
            '#type' => 'component',
            '#component' => 'sdc_test:no-props',
            '#props' => [],
        ];
        $crawler = $this->renderComponentRenderArray($build);
        $this->assertEquals($crawler->filter('#sdc-wrapper')
            ->innerText(), 'This is a test string.');
    }
    
    /**
     * Ensures some key aspects of the plugin definition are correctly computed.
     *
     * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
     */
    public function testPluginDefinition() : void {
        $plugin_manager = \Drupal::service('plugin.manager.sdc');
        assert($plugin_manager instanceof ComponentPluginManager);
        $definition = $plugin_manager->getDefinition('sdc_test:my-banner');
        $this->assertSame('my-banner', $definition['machineName']);
        $this->assertStringEndsWith('system/tests/modules/sdc_test/components/my-banner', $definition['path']);
        $this->assertEquals([
            'core/drupal',
        ], $definition['library']['dependencies']);
        $this->assertNotEmpty($definition['library']['css']['component']);
        $this->assertSame('my-banner.twig', $definition['template']);
        $this->assertNotEmpty($definition['documentation']);
    }

}