Issue #3025785 by amateescu, mallezie, s_leu, smustgrave, tim.plunkett: Cannot create entity with image in a workspace

(cherry picked from commit 4229a611e5)

core/modules/workspaces/src/EntityTypeInfo.php

@@ -62,6 +62,12 @@ class EntityTypeInfo implements ContainerInjectionInterface {
         }
       }
 
+      // The 'file' entity type is allowed to perform CRUD operations inside a
+      // workspace without being tracked.
+      if ($entity_type->id() === 'file') {
+        $entity_type->setHandlerClass('workspace', IgnoredWorkspaceHandler::class);
+      }
+
       // Internal entity types are allowed to perform CRUD operations inside a
       // workspace.
       if ($entity_type->isInternal()) {

core/modules/workspaces/tests/modules/workspaces_test/workspaces_test.module

@@ -0,0 +1,19 @@
+<?php
+
+/**
+ * @file
+ * Provides supporting code for testing workspaces.
+ */
+
+/**
+ * Implements hook_entity_type_alter().
+ */
+function workspaces_test_entity_type_alter(array &$entity_types) {
+  $state = \Drupal::state();
+
+  // Allow all entity types to have their definition changed dynamically for
+  // testing purposes.
+  foreach ($entity_types as $entity_type_id => $entity_type) {
+    $entity_types[$entity_type_id] = $state->get("$entity_type_id.entity_type", $entity_types[$entity_type_id]);
+  }
+}

core/modules/workspaces/tests/src/Kernel/WorkspaceTestTrait.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\Tests\workspaces\Kernel;
 
+use Drupal\workspaces\Entity\Handler\IgnoredWorkspaceHandler;
 use Drupal\workspaces\Entity\Workspace;
 
 /**
@@ -140,4 +141,17 @@ trait WorkspaceTestTrait {
     return $query->execute();
   }
 
+  /**
+   * Marks an entity type as ignored in a workspace.
+   *
+   * @param string $entity_type_id
+   *   The entity type ID.
+   */
+  protected function ignoreEntityType(string $entity_type_id): void {
+    $entity_type = clone \Drupal::entityTypeManager()->getDefinition($entity_type_id);
+    $entity_type->setHandlerClass('workspace', IgnoredWorkspaceHandler::class);
+    \Drupal::state()->set("$entity_type_id.entity_type", $entity_type);
+    \Drupal::entityTypeManager()->clearCachedDefinitions();
+  }
+
 }

core/modules/workspaces/tests/src/Kernel/WorkspacesFileItemTest.php

@@ -0,0 +1,65 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\Tests\workspaces\Kernel;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Tests\file\Kernel\FileItemTest;
+use Drupal\Tests\user\Traits\UserCreationTrait;
+use Drupal\workspaces\Entity\Workspace;
+
+/**
+ * Tests using entity fields of the file field type in a workspace.
+ *
+ * @group workspaces
+ */
+class WorkspacesFileItemTest extends FileItemTest {
+
+  use UserCreationTrait;
+  use WorkspaceTestTrait;
+
+  /**
+   * The entity type manager.
+   */
+  protected EntityTypeManagerInterface $entityTypeManager;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'file',
+    'path_alias',
+    'workspaces',
+    'workspaces_test',
+  ];
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setUp(): void {
+    parent::setUp();
+
+    $this->entityTypeManager = \Drupal::entityTypeManager();
+
+    $this->installEntitySchema('workspace');
+    $this->installSchema('workspaces', ['workspace_association']);
+
+    // Create a new workspace and activate it.
+    Workspace::create(['id' => 'stage', 'label' => 'Stage'])->save();
+    $this->switchToWorkspace('stage');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function testFileItem(): void {
+    // Ignore entity types that are not being tested, in order to fully re-use
+    // the parent test method.
+    $this->ignoreEntityType('entity_test');
+    $this->ignoreEntityType('entity_view_display');
+
+    parent::testFileItem();
+  }
+
+}