--- /dev/null
+<?php
+
+namespace Drupal\Tests\book\Kernel;
+
+use Drupal\node\Entity\Node;
+use Drupal\node\Entity\NodeType;
+use Drupal\KernelTests\KernelTestBase;
+
+/**
+ * Tests that the Book module handles pending revisions correctly.
+ *
+ * @group book
+ */
+class BookPendingRevisionTest extends KernelTestBase {
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['system', 'user', 'field', 'filter', 'text', 'node', 'book'];
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function setUp() {
+ parent::setUp();
+
+ $this->installEntitySchema('user');
+ $this->installEntitySchema('node');
+ $this->installSchema('book', ['book']);
+ $this->installSchema('node', ['node_access']);
+ $this->installConfig(['node', 'book', 'field']);
+ }
+
+ /**
+ * Tests pending revision handling for books.
+ */
+ public function testBookWithPendingRevisions() {
+ $content_type = NodeType::create([
+ 'type' => $this->randomMachineName(),
+ 'name' => $this->randomString(),
+ ]);
+ $content_type->save();
+ $book_config = $this->config('book.settings');
+ $allowed_types = $book_config->get('allowed_types');
+ $allowed_types[] = $content_type->id();
+ $book_config->set('allowed_types', $allowed_types)->save();
+
+ // Create two top-level books a child.
+ $book_1 = Node::create(['title' => $this->randomString(), 'type' => $content_type->id()]);
+ $book_1->book['bid'] = 'new';
+ $book_1->save();
+ $book_1_child = Node::create(['title' => $this->randomString(), 'type' => $content_type->id()]);
+ $book_1_child->book['bid'] = $book_1->id();
+ $book_1_child->book['pid'] = $book_1->id();
+ $book_1_child->save();
+
+ $book_2 = Node::create(['title' => $this->randomString(), 'type' => $content_type->id()]);
+ $book_2->book['bid'] = 'new';
+ $book_2->save();
+
+ $child = Node::create(['title' => $this->randomString(), 'type' => $content_type->id()]);
+ $child->book['bid'] = $book_1->id();
+ $child->book['pid'] = $book_1->id();
+ $child->save();
+
+ // Try to move the child to a different book while saving it as a pending
+ // revision.
+ /** @var \Drupal\book\BookManagerInterface $book_manager */
+ $book_manager = $this->container->get('book.manager');
+
+ // Check that the API doesn't allow us to change the book outline for
+ // pending revisions.
+ $child->book['bid'] = $book_2->id();
+ $child->setNewRevision(TRUE);
+ $child->isDefaultRevision(FALSE);
+
+ $this->assertFalse($book_manager->updateOutline($child), 'A pending revision can not change the book outline.');
+
+ // Check that the API doesn't allow us to change the book parent for
+ // pending revisions.
+ $child = \Drupal::entityTypeManager()->getStorage('node')->loadUnchanged($child->id());
+ $child->book['pid'] = $book_1_child->id();
+ $child->setNewRevision(TRUE);
+ $child->isDefaultRevision(FALSE);
+
+ $this->assertFalse($book_manager->updateOutline($child), 'A pending revision can not change the book outline.');
+
+ // Check that the API doesn't allow us to change the book weight for
+ // pending revisions.
+ $child = \Drupal::entityTypeManager()->getStorage('node')->loadUnchanged($child->id());
+ $child->book['weight'] = 2;
+ $child->setNewRevision(TRUE);
+ $child->isDefaultRevision(FALSE);
+
+ $this->assertFalse($book_manager->updateOutline($child), 'A pending revision can not change the book outline.');
+ }
+
+}