Add test for CoolPreview formatter.

templates/collabora-online-preview.html.twig

@@ -1,4 +1,4 @@
-<div>
+<div class="cool-preview__wrapper">
   <p>{{ fileName }} <button onclick="previewField('{{ editorUrl }}');">View</button></p>
   <dialog id="cool-editor__dialog" class="cool-editor__dialog">
     <iframe class="cool-frame__preview"></iframe>

tests/src/Kernel/CoolPreviewFormatterTest.php

@@ -0,0 +1,203 @@
+<?php
+
+/*
+ * Copyright the Collabora Online contributors.
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\collabora_online\Kernel;
+
+use Drupal\Core\Cache\Cache;
+use Drupal\Core\Entity\Display\EntityDisplayInterface;
+use Drupal\entity_test\Entity\EntityTest;
+use Drupal\field\Entity\FieldConfig;
+use Drupal\field\Entity\FieldStorageConfig;
+use Drupal\file\Entity\File;
+use Drupal\media\Entity\Media;
+use Symfony\Component\DomCrawler\Crawler;
+
+/**
+ * @coversDefaultClass \Drupal\collabora_online\Plugin\Field\FieldFormatter\CoolPreview
+ */
+class CoolPreviewFormatterTest extends CollaboraKernelTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'entity_test',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    parent::setUp();
+
+    $this->installEntitySchema('entity_test');
+    $this->createMediaType('file', ['id' => 'document']);
+
+    // Create test file.
+    file_put_contents('public://file.txt', $this->randomString());
+    File::create(['uri' => 'public://test.txt'])->save();
+  }
+
+  /**
+   * Tests that field is rendered.
+   *
+   * @covers ::viewElements
+   */
+  public function testViewElements(): void {
+    // Create field configuration and content.
+    $field_name = $this->randomMachineName();
+    $media_display = $this->prepareFieldAndDisplay($field_name, 'media', 'document');
+
+    $media = Media::create([
+      'bundle' => 'document',
+      $field_name => 1,
+    ]);
+    $media->save();
+
+    $user = $this->createUser([
+      'access content',
+      'preview document in collabora',
+    ]);
+    $this->setCurrentUser($user);
+
+    // Field is rendered correctly.
+    $build = $media_display->build($media)[$field_name];
+    $this->assertSame(
+      [
+        'contexts' => ['user.permissions'],
+        'tags' => ['media:1'],
+        'max-age' => Cache::PERMANENT,
+      ],
+      $build['#cache'],
+    );
+    $this->assertCoolPreviewField($media->getName(), $build);
+
+    // Iframe is not displayed for other entities than media.
+    $test_display = $this->prepareFieldAndDisplay($field_name, 'entity_test', 'entity_test');
+    $entity = EntityTest::create([
+      $field_name => 1,
+    ]);
+    $entity->save();
+    $this->assertSame(
+      [
+        '#cache' => [
+          'contexts' => [],
+          'tags' => [],
+          'max-age' => Cache::PERMANENT,
+        ],
+      ],
+      $test_display->build($entity)[$field_name]
+    );
+
+    // Iframe is not displayed for users without permission.
+    $this->setCurrentUser($this->createUser(['access content']));
+    $this->assertSame(
+      [
+        '#cache' => [
+          'contexts' => ['user.permissions'],
+          'tags' => ['media:1'],
+          'max-age' => Cache::PERMANENT,
+        ],
+      ],
+      $media_display->build($media)[$field_name]
+    );
+    $this->setCurrentUser($user);
+
+    // Iframe is not displayed for empty value field.
+    $this->setCurrentUser($this->createUser([
+      'access content',
+      'preview document in collabora',
+    ]));
+    File::load(1)->delete();
+    $this->assertSame(
+      [
+        '#cache' => [
+          'contexts' => ['user.permissions'],
+          'tags' => ['media:1'],
+          'max-age' => Cache::PERMANENT,
+        ],
+      ],
+      $media_display->build($media)[$field_name]
+    );
+  }
+
+  /**
+   * Creates a file field using 'collabora_preview' formatter.
+   *
+   * @param string $field_name
+   *   The field name.
+   * @param string $entity_type
+   *   The entity type.
+   * @param string $bundle
+   *   The bundle.
+   *
+   * @return \Drupal\Core\Entity\Display\EntityDisplayInterface
+   *   The display where the field is set.
+   */
+  protected function prepareFieldAndDisplay(string $field_name, string $entity_type, string $bundle): EntityDisplayInterface {
+    $field_storage = FieldStorageConfig::create([
+      'field_name' => $field_name,
+      'entity_type' => $entity_type,
+      'type' => 'file',
+    ]);
+    $field_storage->save();
+
+    $instance = FieldConfig::create([
+      'field_storage' => $field_storage,
+      'bundle' => $bundle,
+    ]);
+    $instance->save();
+
+    /** @var \Drupal\Core\Entity\Display\EntityDisplayInterface $display */
+    $display = \Drupal::service('entity_display.repository')
+      ->getViewDisplay($entity_type, $bundle)
+      ->setComponent($field_name, [
+        'type' => 'collabora_preview',
+        'settings' => [],
+      ]);
+    $display->save();
+
+    return $display;
+  }
+
+  /**
+   * Asserts HTML output from the field formatter.
+   *
+   * @param string $expected_media_name
+   *   The media entity label.
+   * @param array $build
+   *   The field render array.
+   */
+  protected function assertCoolPreviewField(string $expected_media_name, array $build): void {
+    $crawler = new Crawler((string) \Drupal::service('renderer')->renderRoot($build));
+
+    // Library is present after rendering the array.
+    $this->assertEquals(['library' => ['collabora_online/cool.previewer']], $build['#attached']);
+
+    $expected_html = <<<END
+<div class="cool-preview__wrapper">
+  <p>$expected_media_name <button onclick="previewField('/cool/view/1');">View</button></p>
+  <dialog id="cool-editor__dialog" class="cool-editor__dialog">
+    <iframe class="cool-frame__preview"></iframe>
+  </dialog>
+</div>
+END;
+
+    // Only one preview element is present.
+    $elements = $crawler->filter('div.cool-preview__wrapper');
+    $this->assertCount(1, $elements);
+    $this->assertEquals($expected_html, $elements->outerHtml());
+  }
+
+}