RearrangeFieldsTest.php

<?php

namespace Drupal\Tests\views_ui\Functional;

use Drupal\views\Views;

/**
 * Tests the reordering of fields via AJAX.
 *
 * @group views_ui
 * @see \Drupal\views_ui\Form\Ajax\Rearrange
 */
class RearrangeFieldsTest extends UITestBase {
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_view',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Gets the fields from the View.
     */
    protected function getViewFields($view_name = 'test_view', $display_id = 'default') {
        $view = Views::getView($view_name);
        $view->setDisplay($display_id);
        $fields = [];
        foreach ($view->displayHandlers
            ->get('default')
            ->getHandlers('field') as $field => $handler) {
            $fields[] = $field;
        }
        return $fields;
    }
    
    /**
     * Check if the fields are in the correct order.
     *
     * @param string $view_name
     *   The name of the view.
     * @param array $fields
     *   Array of field names.
     *
     * @internal
     */
    protected function assertFieldOrder(string $view_name, array $fields) : void {
        $this->drupalGet('admin/structure/views/nojs/rearrange/' . $view_name . '/default/field');
        foreach ($fields as $idx => $field) {
            $this->assertSession()
                ->fieldValueEquals('edit-fields-' . $field . '-weight', $idx + 1);
        }
    }
    
    /**
     * Tests field sorting.
     */
    public function testRearrangeFields() {
        $view_name = 'test_view';
        // Checks that the order on the rearrange form matches the creation order.
        $this->assertFieldOrder($view_name, $this->getViewFields($view_name));
        // Checks that a field is not deleted if a value is not passed back.
        $fields = [];
        $this->drupalGet('admin/structure/views/nojs/rearrange/' . $view_name . '/default/field');
        $this->submitForm($fields, 'Apply');
        $this->assertFieldOrder($view_name, $this->getViewFields($view_name));
        // Checks that revers the new field order is respected.
        $reversedFields = array_reverse($this->getViewFields($view_name));
        $fields = [];
        foreach ($reversedFields as $delta => $field) {
            $fields['fields[' . $field . '][weight]'] = $delta;
        }
        $fields_count = count($fields);
        $this->drupalGet('admin/structure/views/nojs/rearrange/' . $view_name . '/default/field');
        $this->submitForm($fields, 'Apply');
        $this->assertFieldOrder($view_name, $reversedFields);
        // Checks that there is a remove link for each field.
        $this->assertCount($fields_count, $this->cssSelect('a.views-remove-link'));
    }

}