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diff --git a/web/core/modules/book/tests/src/Kernel/BookPendingRevisionTest.php b/web/core/modules/book/tests/src/Kernel/BookPendingRevisionTest.php
new file mode 100644
index 000000000..ababb3daa
--- /dev/null
+++ b/web/core/modules/book/tests/src/Kernel/BookPendingRevisionTest.php
@@ -0,0 +1,100 @@
+<?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.');
+  }
+
+}