LayoutBuilderFormModeTest.php

<?php

namespace Drupal\Tests\layout_builder\Functional;

use Drupal\Core\Entity\Entity\EntityFormDisplay;
use Drupal\Core\Entity\Entity\EntityFormMode;
use Drupal\entity_test\Entity\EntityTest;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;
use Drupal\layout_builder\Entity\LayoutBuilderEntityViewDisplay;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests Layout Builder forms.
 *
 * @group layout_builder
 */
class LayoutBuilderFormModeTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'field',
        'entity_test',
        'layout_builder',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Set up a field with a validation constraint.
        $field_storage = FieldStorageConfig::create([
            'field_name' => 'foo',
            'entity_type' => 'entity_test',
            'type' => 'string',
        ]);
        $field_storage->save();
        FieldConfig::create([
            'field_storage' => $field_storage,
            'bundle' => 'entity_test',
            // Expecting required value.
'required' => TRUE,
        ])->save();
        // Enable layout builder custom layouts.
        LayoutBuilderEntityViewDisplay::create([
            'targetEntityType' => 'entity_test',
            'bundle' => 'entity_test',
            'mode' => 'default',
            'status' => TRUE,
        ])->enable()
            ->enableLayoutBuilder()
            ->setOverridable()
            ->save();
        // Add the form mode and show the field with a constraint.
        EntityFormMode::create([
            'id' => 'entity_test.layout_builder',
            'targetEntityType' => 'entity_test',
        ])->save();
        EntityFormDisplay::create([
            'targetEntityType' => 'entity_test',
            'bundle' => 'entity_test',
            'mode' => 'layout_builder',
            'status' => TRUE,
        ])->setComponent('foo', [
            'type' => 'string_textfield',
        ])
            ->save();
        $this->drupalLogin($this->drupalCreateUser([
            'view test entity',
            'configure any layout',
            'configure all entity_test entity_test layout overrides',
        ]));
        EntityTest::create()->setName($this->randomMachineName())
            ->save();
    }
    
    /**
     * Tests that the 'Discard changes' button skips validation and ignores input.
     */
    public function testDiscardValidation() {
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        // When submitting the form normally, a validation error should be shown.
        $this->drupalGet('entity_test/1/layout');
        $assert_session->fieldExists('foo[0][value]');
        $assert_session->elementAttributeContains('named', [
            'field',
            'foo[0][value]',
        ], 'required', 'required');
        $page->pressButton('Save layout');
        $assert_session->pageTextContains('foo field is required.');
        // When Discarding changes, a validation error will not be shown.
        // Reload the form for fresh state.
        $this->drupalGet('entity_test/1/layout');
        $page->pressButton('Discard changes');
        $assert_session->pageTextNotContains('foo field is required.');
        $assert_session->addressEquals('entity_test/1/layout/discard-changes');
        // Submit the form to ensure no invalid form state retained.
        $page->pressButton('Confirm');
        $assert_session->pageTextContains('The changes to the layout have been discarded.');
    }

}