summaryrefslogtreecommitdiffstats
path: root/core/modules/book/src/Tests/BookTest.php
blob: e5367a2ad2a78c61691bde36858456536ff9fb77 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
<?php

namespace Drupal\book\Tests;

use Drupal\Component\Utility\SafeMarkup;
use Drupal\Core\Cache\Cache;
use Drupal\Core\Entity\EntityInterface;
use Drupal\simpletest\WebTestBase;
use Drupal\user\RoleInterface;

/**
 * Create a book, add pages, and test book interface.
 *
 * @group book
 */
class BookTest extends WebTestBase {

  /**
   * Modules to install.
   *
   * @var array
   */
  public static $modules = array('book', 'block', 'node_access_test', 'book_test');

  /**
   * A book node.
   *
   * @var \Drupal\node\NodeInterface
   */
  protected $book;

  /**
   * A user with permission to create and edit books.
   *
   * @var object
   */
  protected $bookAuthor;

  /**
   * A user with permission to view a book and access printer-friendly version.
   *
   * @var object
   */
  protected $webUser;

  /**
   * A user with permission to create and edit books and to administer blocks.
   *
   * @var object
   */
  protected $adminUser;

  /**
   * A user without the 'node test view' permission.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $webUserWithoutNodeAccess;

  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();
    $this->drupalPlaceBlock('system_breadcrumb_block');
    $this->drupalPlaceBlock('page_title_block');

    // node_access_test requires a node_access_rebuild().
    node_access_rebuild();

    // Create users.
    $this->bookAuthor = $this->drupalCreateUser(array('create new books', 'create book content', 'edit own book content', 'add content to books'));
    $this->webUser = $this->drupalCreateUser(array('access printer-friendly version', 'node test view'));
    $this->webUserWithoutNodeAccess = $this->drupalCreateUser(array('access printer-friendly version'));
    $this->adminUser = $this->drupalCreateUser(array('create new books', 'create book content', 'edit any book content', 'delete any book content', 'add content to books', 'administer blocks', 'administer permissions', 'administer book outlines', 'node test view', 'administer content types', 'administer site configuration'));
  }

  /**
   * Creates a new book with a page hierarchy.
   *
   * @return \Drupal\node\NodeInterface[]
   */
  function createBook() {
    // Create new book.
    $this->drupalLogin($this->bookAuthor);

    $this->book = $this->createBookNode('new');
    $book = $this->book;

    /*
     * Add page hierarchy to book.
     * Book
     *  |- Node 0
     *   |- Node 1
     *   |- Node 2
     *  |- Node 3
     *  |- Node 4
     */
    $nodes = array();
    $nodes[] = $this->createBookNode($book->id()); // Node 0.
    $nodes[] = $this->createBookNode($book->id(), $nodes[0]->book['nid']); // Node 1.
    $nodes[] = $this->createBookNode($book->id(), $nodes[0]->book['nid']); // Node 2.
    $nodes[] = $this->createBookNode($book->id()); // Node 3.
    $nodes[] = $this->createBookNode($book->id()); // Node 4.

    $this->drupalLogout();

    return $nodes;
  }

  /**
   * Tests the book navigation cache context.
   *
   * @see \Drupal\book\Cache\BookNavigationCacheContext
   */
  public function testBookNavigationCacheContext() {
    // Create a page node.
    $this->drupalCreateContentType(['type' => 'page']);
    $page = $this->drupalCreateNode();

    // Create a book, consisting of book nodes.
    $book_nodes = $this->createBook();

    // Enable the debug output.
    \Drupal::state()->set('book_test.debug_book_navigation_cache_context', TRUE);
    Cache::invalidateTags(['book_test.debug_book_navigation_cache_context']);

    $this->drupalLogin($this->bookAuthor);

    // On non-node route.
    $this->drupalGet($this->adminUser->urlInfo());
    $this->assertRaw('[route.book_navigation]=book.none');

    // On non-book node route.
    $this->drupalGet($page->urlInfo());
    $this->assertRaw('[route.book_navigation]=book.none');

    // On book node route.
    $this->drupalGet($book_nodes[0]->urlInfo());
    $this->assertRaw('[route.book_navigation]=0|2|3');
    $this->drupalGet($book_nodes[1]->urlInfo());
    $this->assertRaw('[route.book_navigation]=0|2|3|4');
    $this->drupalGet($book_nodes[2]->urlInfo());
    $this->assertRaw('[route.book_navigation]=0|2|3|5');
    $this->drupalGet($book_nodes[3]->urlInfo());
    $this->assertRaw('[route.book_navigation]=0|2|6');
    $this->drupalGet($book_nodes[4]->urlInfo());
    $this->assertRaw('[route.book_navigation]=0|2|7');
  }

  /**
   * Tests saving the book outline on an empty book.
   */
  function testEmptyBook() {
    // Create a new empty book.
    $this->drupalLogin($this->bookAuthor);
    $book = $this->createBookNode('new');
    $this->drupalLogout();

    // Log in as a user with access to the book outline and save the form.
    $this->drupalLogin($this->adminUser);
    $this->drupalPostForm('admin/structure/book/' . $book->id(), array(), t('Save book pages'));
    $this->assertText(t('Updated book @book.', array('@book' => $book->label())));
  }

  /**
   * Tests book functionality through node interfaces.
   */
  function testBook() {
    // Create new book.
    $nodes = $this->createBook();
    $book = $this->book;

    $this->drupalLogin($this->webUser);

    // Check that book pages display along with the correct outlines and
    // previous/next links.
    $this->checkBookNode($book, array($nodes[0], $nodes[3], $nodes[4]), FALSE, FALSE, $nodes[0], array());
    $this->checkBookNode($nodes[0], array($nodes[1], $nodes[2]), $book, $book, $nodes[1], array($book));
    $this->checkBookNode($nodes[1], NULL, $nodes[0], $nodes[0], $nodes[2], array($book, $nodes[0]));
    $this->checkBookNode($nodes[2], NULL, $nodes[1], $nodes[0], $nodes[3], array($book, $nodes[0]));
    $this->checkBookNode($nodes[3], NULL, $nodes[2], $book, $nodes[4], array($book));
    $this->checkBookNode($nodes[4], NULL, $nodes[3], $book, FALSE, array($book));

    $this->drupalLogout();
    $this->drupalLogin($this->bookAuthor);

    // Check the presence of expected cache tags.
    $this->drupalGet('node/add/book');
    $this->assertCacheTag('config:book.settings');

    /*
     * Add Node 5 under Node 3.
     * Book
     *  |- Node 0
     *   |- Node 1
     *   |- Node 2
     *  |- Node 3
     *   |- Node 5
     *  |- Node 4
     */
    $nodes[] = $this->createBookNode($book->id(), $nodes[3]->book['nid']); // Node 5.
    $this->drupalLogout();
    $this->drupalLogin($this->webUser);
    // Verify the new outline - make sure we don't get stale cached data.
    $this->checkBookNode($nodes[3], array($nodes[5]), $nodes[2], $book, $nodes[5], array($book));
    $this->checkBookNode($nodes[4], NULL, $nodes[5], $book, FALSE, array($book));
    $this->drupalLogout();
    // Create a second book, and move an existing book page into it.
    $this->drupalLogin($this->bookAuthor);
    $other_book = $this->createBookNode('new');
    $node = $this->createBookNode($book->id());
    $edit = array('book[bid]' => $other_book->id());
    $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));

    $this->drupalLogout();
    $this->drupalLogin($this->webUser);

    // Check that the nodes in the second book are displayed correctly.
    // First we must set $this->book to the second book, so that the
    // correct regex will be generated for testing the outline.
    $this->book = $other_book;
    $this->checkBookNode($other_book, array($node), FALSE, FALSE, $node, array());
    $this->checkBookNode($node, NULL, $other_book, $other_book, FALSE, array($other_book));

    // Test that we can save a book programatically.
    $this->drupalLogin($this->bookAuthor);
    $book = $this->createBookNode('new');
    $book->save();
  }

  /**
   * Checks the outline of sub-pages; previous, up, and next.
   *
   * Also checks the printer friendly version of the outline.
   *
   * @param \Drupal\Core\Entity\EntityInterface $node
   *   Node to check.
   * @param $nodes
   *   Nodes that should be in outline.
   * @param $previous
   *   (optional) Previous link node. Defaults to FALSE.
   * @param $up
   *   (optional) Up link node. Defaults to FALSE.
   * @param $next
   *   (optional) Next link node. Defaults to FALSE.
   * @param array $breadcrumb
   *   The nodes that should be displayed in the breadcrumb.
   */
  function checkBookNode(EntityInterface $node, $nodes, $previous = FALSE, $up = FALSE, $next = FALSE, array $breadcrumb) {
    // $number does not use drupal_static as it should not be reset
    // since it uniquely identifies each call to checkBookNode().
    static $number = 0;
    $this->drupalGet('node/' . $node->id());

    // Check outline structure.
    if ($nodes !== NULL) {
      $this->assertPattern($this->generateOutlinePattern($nodes), format_string('Node @number outline confirmed.', array('@number' => $number)));
    }
    else {
      $this->pass(format_string('Node %number does not have outline.', array('%number' => $number)));
    }

    // Check previous, up, and next links.
    if ($previous) {
      /** @var \Drupal\Core\Url $url */
      $url = $previous->urlInfo();
      $url->setOptions(array('attributes' => array('rel' => array('prev'), 'title' => t('Go to previous page'))));
      $text = SafeMarkup::format('<b>‹</b> @label', array('@label' => $previous->label()));
      $this->assertRaw(\Drupal::l($text, $url), 'Previous page link found.');
    }

    if ($up) {
      /** @var \Drupal\Core\Url $url */
      $url = $up->urlInfo();
      $url->setOptions(array('attributes' => array('title' => t('Go to parent page'))));
      $this->assertRaw(\Drupal::l('Up', $url), 'Up page link found.');
    }

    if ($next) {
      /** @var \Drupal\Core\Url $url */
      $url = $next->urlInfo();
      $url->setOptions(array('attributes' => array('rel' => array('next'), 'title' => t('Go to next page'))));
      $text = SafeMarkup::format('@label <b>›</b>', array('@label' => $next->label()));
      $this->assertRaw(\Drupal::l($text, $url), 'Next page link found.');
    }

    // Compute the expected breadcrumb.
    $expected_breadcrumb = array();
    $expected_breadcrumb[] = \Drupal::url('<front>');
    foreach ($breadcrumb as $a_node) {
      $expected_breadcrumb[] = $a_node->url();
    }

    // Fetch links in the current breadcrumb.
    $links = $this->xpath('//nav[@class="breadcrumb"]/ol/li/a');
    $got_breadcrumb = array();
    foreach ($links as $link) {
      $got_breadcrumb[] = (string) $link['href'];
    }

    // Compare expected and got breadcrumbs.
    $this->assertIdentical($expected_breadcrumb, $got_breadcrumb, 'The breadcrumb is correctly displayed on the page.');

    // Check printer friendly version.
    $this->drupalGet('book/export/html/' . $node->id());
    $this->assertText($node->label(), 'Printer friendly title found.');
    $this->assertRaw($node->body->processed, 'Printer friendly body found.');

    $number++;
  }

  /**
   * Creates a regular expression to check for the sub-nodes in the outline.
   *
   * @param array $nodes
   *   An array of nodes to check in outline.
   *
   * @return string
   *   A regular expression that locates sub-nodes of the outline.
   */
  function generateOutlinePattern($nodes) {
    $outline = '';
    foreach ($nodes as $node) {
      $outline .= '(node\/' . $node->id() . ')(.*?)(' . $node->label() . ')(.*?)';
    }

    return '/<nav id="book-navigation-' . $this->book->id() . '"(.*?)<ul(.*?)' . $outline . '<\/ul>/s';
  }

  /**
   * Creates a book node.
   *
   * @param int|string $book_nid
   *   A book node ID or set to 'new' to create a new book.
   * @param int|null $parent
   *   (optional) Parent book reference ID. Defaults to NULL.
   *
   * @return \Drupal\node\NodeInterface
   *   The created node.
   */
  function createBookNode($book_nid, $parent = NULL) {
    // $number does not use drupal_static as it should not be reset
    // since it uniquely identifies each call to createBookNode().
    static $number = 0; // Used to ensure that when sorted nodes stay in same order.

    $edit = array();
    $edit['title[0][value]'] = str_pad($number, 2, '0', STR_PAD_LEFT) . ' - SimpleTest test node ' . $this->randomMachineName(10);
    $edit['body[0][value]'] = 'SimpleTest test body ' . $this->randomMachineName(32) . ' ' . $this->randomMachineName(32);
    $edit['book[bid]'] = $book_nid;

    if ($parent !== NULL) {
      $this->drupalPostForm('node/add/book', $edit, t('Change book (update list of parents)'));

      $edit['book[pid]'] = $parent;
      $this->drupalPostForm(NULL, $edit, t('Save'));
      // Make sure the parent was flagged as having children.
      $parent_node = \Drupal::entityManager()->getStorage('node')->loadUnchanged($parent);
      $this->assertFalse(empty($parent_node->book['has_children']), 'Parent node is marked as having children');
    }
    else {
      $this->drupalPostForm('node/add/book', $edit, t('Save'));
    }

    // Check to make sure the book node was created.
    $node = $this->drupalGetNodeByTitle($edit['title[0][value]']);
    $this->assertNotNull(($node === FALSE ? NULL : $node), 'Book node found in database.');
    $number++;

    return $node;
  }

  /**
   * Tests book export ("printer-friendly version") functionality.
   */
  function testBookExport() {
    // Create a book.
    $nodes = $this->createBook();

    // Log in as web user and view printer-friendly version.
    $this->drupalLogin($this->webUser);
    $this->drupalGet('node/' . $this->book->id());
    $this->clickLink(t('Printer-friendly version'));

    // Make sure each part of the book is there.
    foreach ($nodes as $node) {
      $this->assertText($node->label(), 'Node title found in printer friendly version.');
      $this->assertRaw($node->body->processed, 'Node body found in printer friendly version.');
    }

    // Make sure we can't export an unsupported format.
    $this->drupalGet('book/export/foobar/' . $this->book->id());
    $this->assertResponse('404', 'Unsupported export format returned "not found".');

    // Make sure we get a 404 on a not existing book node.
    $this->drupalGet('book/export/html/123');
    $this->assertResponse('404', 'Not existing book node returned "not found".');

    // Make sure an anonymous user cannot view printer-friendly version.
    $this->drupalLogout();

    // Load the book and verify there is no printer-friendly version link.
    $this->drupalGet('node/' . $this->book->id());
    $this->assertNoLink(t('Printer-friendly version'), 'Anonymous user is not shown link to printer-friendly version.');

    // Try getting the URL directly, and verify it fails.
    $this->drupalGet('book/export/html/' . $this->book->id());
    $this->assertResponse('403', 'Anonymous user properly forbidden.');

    // Now grant anonymous users permission to view the printer-friendly
    // version and verify that node access restrictions still prevent them from
    // seeing it.
    user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, array('access printer-friendly version'));
    $this->drupalGet('book/export/html/' . $this->book->id());
    $this->assertResponse('403', 'Anonymous user properly forbidden from seeing the printer-friendly version when denied by node access.');
  }

  /**
   * Tests the functionality of the book navigation block.
   */
  function testBookNavigationBlock() {
    $this->drupalLogin($this->adminUser);

    // Enable the block.
    $block = $this->drupalPlaceBlock('book_navigation');

    // Give anonymous users the permission 'node test view'.
    $edit = array();
    $edit[RoleInterface::ANONYMOUS_ID . '[node test view]'] = TRUE;
    $this->drupalPostForm('admin/people/permissions/' . RoleInterface::ANONYMOUS_ID, $edit, t('Save permissions'));
    $this->assertText(t('The changes have been saved.'), "Permission 'node test view' successfully assigned to anonymous users.");

    // Test correct display of the block.
    $nodes = $this->createBook();
    $this->drupalGet('<front>');
    $this->assertText($block->label(), 'Book navigation block is displayed.');
    $this->assertText($this->book->label(), format_string('Link to book root (@title) is displayed.', array('@title' => $nodes[0]->label())));
    $this->assertNoText($nodes[0]->label(), 'No links to individual book pages are displayed.');
  }

  /**
   * Tests BookManager::getTableOfContents().
   */
  public function testGetTableOfContents() {
    // Create new book.
    $nodes = $this->createBook();
    $book = $this->book;

    $this->drupalLogin($this->bookAuthor);

    /*
     * Add Node 5 under Node 2.
     * Add Node 6, 7, 8, 9, 10, 11 under Node 3.
     * Book
     *  |- Node 0
     *   |- Node 1
     *   |- Node 2
     *    |- Node 5
     *  |- Node 3
     *   |- Node 6
     *    |- Node 7
     *     |- Node 8
     *      |- Node 9
     *       |- Node 10
     *        |- Node 11
     *  |- Node 4
     */
    foreach ([5 => 2, 6 => 3, 7 => 6, 8 => 7, 9 => 8, 10 => 9, 11 => 10] as $child => $parent) {
      $nodes[$child] = $this->createBookNode($book->id(), $nodes[$parent]->id());
    }
    $this->drupalGet($nodes[0]->toUrl('edit-form'));
    // Snice Node 0 has children 2 levels deep, nodes 10 and 11 should not
    // appear in the selector.
    $this->assertNoOption('edit-book-pid', $nodes[10]->id());
    $this->assertNoOption('edit-book-pid', $nodes[11]->id());
    // Node 9 should be available as an option.
    $this->assertOption('edit-book-pid', $nodes[9]->id());

    // Get a shallow set of options.
    /** @var \Drupal\book\BookManagerInterface $manager */
    $manager = $this->container->get('book.manager');
    $options = $manager->getTableOfContents($book->id(), 3);
    $expected_nids = [$book->id(), $nodes[0]->id(), $nodes[1]->id(), $nodes[2]->id(), $nodes[3]->id(), $nodes[6]->id(), $nodes[4]->id()];
    $this->assertEqual(count($options), count($expected_nids));
    $diff = array_diff($expected_nids, array_keys($options));
    $this->assertTrue(empty($diff), 'Found all expected option keys');
    // Exclude Node 3.
    $options = $manager->getTableOfContents($book->id(), 3, array($nodes[3]->id()));
    $expected_nids = array($book->id(), $nodes[0]->id(), $nodes[1]->id(), $nodes[2]->id(), $nodes[4]->id());
    $this->assertEqual(count($options), count($expected_nids));
    $diff = array_diff($expected_nids, array_keys($options));
    $this->assertTrue(empty($diff), 'Found all expected option keys after excluding Node 3');
  }

  /**
   * Tests the book navigation block when an access module is installed.
   */
  function testNavigationBlockOnAccessModuleInstalled() {
    $this->drupalLogin($this->adminUser);
    $block = $this->drupalPlaceBlock('book_navigation', array('block_mode' => 'book pages'));

    // Give anonymous users the permission 'node test view'.
    $edit = array();
    $edit[RoleInterface::ANONYMOUS_ID . '[node test view]'] = TRUE;
    $this->drupalPostForm('admin/people/permissions/' . RoleInterface::ANONYMOUS_ID, $edit, t('Save permissions'));
    $this->assertText(t('The changes have been saved.'), "Permission 'node test view' successfully assigned to anonymous users.");

    // Create a book.
    $this->createBook();

    // Test correct display of the block to registered users.
    $this->drupalLogin($this->webUser);
    $this->drupalGet('node/' . $this->book->id());
    $this->assertText($block->label(), 'Book navigation block is displayed to registered users.');
    $this->drupalLogout();

    // Test correct display of the block to anonymous users.
    $this->drupalGet('node/' . $this->book->id());
    $this->assertText($block->label(), 'Book navigation block is displayed to anonymous users.');

    // Test the 'book pages' block_mode setting.
    $this->drupalGet('<front>');
    $this->assertNoText($block->label(), 'Book navigation block is not shown on non-book pages.');
  }

  /**
   * Tests the access for deleting top-level book nodes.
   */
  function testBookDelete() {
    $node_storage = $this->container->get('entity.manager')->getStorage('node');
    $nodes = $this->createBook();
    $this->drupalLogin($this->adminUser);
    $edit = array();

    // Test access to delete top-level and child book nodes.
    $this->drupalGet('node/' . $this->book->id() . '/outline/remove');
    $this->assertResponse('403', 'Deleting top-level book node properly forbidden.');
    $this->drupalPostForm('node/' . $nodes[4]->id() . '/outline/remove', $edit, t('Remove'));
    $node_storage->resetCache(array($nodes[4]->id()));
    $node4 = $node_storage->load($nodes[4]->id());
    $this->assertTrue(empty($node4->book), 'Deleting child book node properly allowed.');

    // Delete all child book nodes and retest top-level node deletion.
    foreach ($nodes as $node) {
      $nids[] = $node->id();
    }
    entity_delete_multiple('node', $nids);
    $this->drupalPostForm('node/' . $this->book->id() . '/outline/remove', $edit, t('Remove'));
    $node_storage->resetCache(array($this->book->id()));
    $node = $node_storage->load($this->book->id());
    $this->assertTrue(empty($node->book), 'Deleting childless top-level book node properly allowed.');

    // Tests directly deleting a book parent.
    $nodes = $this->createBook();
    $this->drupalLogin($this->adminUser);
    $this->drupalGet($this->book->urlInfo('delete-form'));
    $this->assertRaw(t('%title is part of a book outline, and has associated child pages. If you proceed with deletion, the child pages will be relocated automatically.', ['%title' => $this->book->label()]));
    // Delete parent, and visit a child page.
    $this->drupalPostForm($this->book->urlInfo('delete-form'), [], t('Delete'));
    $this->drupalGet($nodes[0]->urlInfo());
    $this->assertResponse(200);
    $this->assertText($nodes[0]->label());
    // The book parents should be updated.
    $node_storage = \Drupal::entityTypeManager()->getStorage('node');
    $node_storage->resetCache();
    $child = $node_storage->load($nodes[0]->id());
    $this->assertEqual($child->id(), $child->book['bid'], 'Child node book ID updated when parent is deleted.');
    // 3rd-level children should now be 2nd-level.
    $second = $node_storage->load($nodes[1]->id());
    $this->assertEqual($child->id(), $second->book['bid'], '3rd-level child node is now second level when top-level node is deleted.');
  }

  /**
   * Tests re-ordering of books.
   */
  public function testBookOrdering() {
    // Create new book.
    $this->createBook();
    $book = $this->book;

    $this->drupalLogin($this->adminUser);
    $node1 = $this->createBookNode($book->id());
    $node2 = $this->createBookNode($book->id());
    $pid = $node1->book['nid'];

    // Head to admin screen and attempt to re-order.
    $this->drupalGet('admin/structure/book/' . $book->id());
    $edit = array(
      "table[book-admin-{$node1->id()}][weight]" => 1,
      "table[book-admin-{$node2->id()}][weight]" => 2,
      // Put node 2 under node 1.
      "table[book-admin-{$node2->id()}][pid]" => $pid,
    );
    $this->drupalPostForm(NULL, $edit, t('Save book pages'));
    // Verify weight was updated.
    $this->assertFieldByName("table[book-admin-{$node1->id()}][weight]", 1);
    $this->assertFieldByName("table[book-admin-{$node2->id()}][weight]", 2);
    $this->assertFieldByName("table[book-admin-{$node2->id()}][pid]", $pid);
  }

  /**
   * Tests outline of a book.
   */
  public function testBookOutline() {
    $this->drupalLogin($this->bookAuthor);

    // Create new node not yet a book.
    $empty_book = $this->drupalCreateNode(array('type' => 'book'));
    $this->drupalGet('node/' . $empty_book->id() . '/outline');
    $this->assertNoLink(t('Book outline'), 'Book Author is not allowed to outline');

    $this->drupalLogin($this->adminUser);
    $this->drupalGet('node/' . $empty_book->id() . '/outline');
    $this->assertRaw(t('Book outline'));
    $this->assertOptionSelected('edit-book-bid', 0, 'Node does not belong to a book');
    $this->assertNoLink(t('Remove from book outline'));

    $edit = array();
    $edit['book[bid]'] = '1';
    $this->drupalPostForm('node/' . $empty_book->id() . '/outline', $edit, t('Add to book outline'));
    $node = \Drupal::entityManager()->getStorage('node')->load($empty_book->id());
    // Test the book array.
    $this->assertEqual($node->book['nid'], $empty_book->id());
    $this->assertEqual($node->book['bid'], $empty_book->id());
    $this->assertEqual($node->book['depth'], 1);
    $this->assertEqual($node->book['p1'], $empty_book->id());
    $this->assertEqual($node->book['pid'], '0');

    // Create new book.
    $this->drupalLogin($this->bookAuthor);
    $book = $this->createBookNode('new');

    $this->drupalLogin($this->adminUser);
    $this->drupalGet('node/' . $book->id() . '/outline');
    $this->assertRaw(t('Book outline'));
    $this->clickLink(t('Remove from book outline'));
    $this->assertRaw(t('Are you sure you want to remove %title from the book hierarchy?', array('%title' => $book->label())));

    // Create a new node and set the book after the node was created.
    $node = $this->drupalCreateNode(array('type' => 'book'));
    $edit = array();
    $edit['book[bid]'] = $node->id();
    $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save'));
    $node = \Drupal::entityManager()->getStorage('node')->load($node->id());

    // Test the book array.
    $this->assertEqual($node->book['nid'], $node->id());
    $this->assertEqual($node->book['bid'], $node->id());
    $this->assertEqual($node->book['depth'], 1);
    $this->assertEqual($node->book['p1'], $node->id());
    $this->assertEqual($node->book['pid'], '0');

    // Test the form itself.
    $this->drupalGet('node/' . $node->id() . '/edit');
    $this->assertOptionSelected('edit-book-bid', $node->id());
  }

  /**
   * Tests that saveBookLink() returns something.
   */
  public function testSaveBookLink() {
    $book_manager = \Drupal::service('book.manager');

    // Mock a link for a new book.
    $link = array('nid' => 1, 'has_children' => 0, 'original_bid' => 0, 'parent_depth_limit' => 8, 'pid' => 0, 'weight' => 0, 'bid' => 1);
    $new = TRUE;

    // Save the link.
    $return = $book_manager->saveBookLink($link, $new);

    // Add the link defaults to $link so we have something to compare to the return from saveBookLink().
    $link += $book_manager->getLinkDefaults($link['nid']);

    // Test the return from saveBookLink.
    $this->assertEqual($return, $link);
  }

  /**
   * Tests the listing of all books.
   */
  public function testBookListing() {
    // Create a new book.
    $this->createBook();

    // Must be a user with 'node test view' permission since node_access_test is installed.
    $this->drupalLogin($this->webUser);

    // Load the book page and assert the created book title is displayed.
    $this->drupalGet('book');

    $this->assertText($this->book->label(), 'The book title is displayed on the book listing page.');
  }

  /**
   * Tests the administrative listing of all books.
   */
  public function testAdminBookListing() {
    // Create a new book.
    $this->createBook();

    // Load the book page and assert the created book title is displayed.
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('admin/structure/book');
    $this->assertText($this->book->label(), 'The book title is displayed on the administrative book listing page.');
  }

  /**
   * Tests the administrative listing of all book pages in a book.
   */
  public function testAdminBookNodeListing() {
    // Create a new book.
    $this->createBook();
    $this->drupalLogin($this->adminUser);

    // Load the book page list and assert the created book title is displayed
    // and action links are shown on list items.
    $this->drupalGet('admin/structure/book/' . $this->book->id());
    $this->assertText($this->book->label(), 'The book title is displayed on the administrative book listing page.');

    $elements = $this->xpath('//table//ul[@class="dropbutton"]/li/a');
    $this->assertEqual((string) $elements[0], 'View', 'View link is found from the list.');
  }

  /**
   * Ensure the loaded book in hook_node_load() does not depend on the user.
   */
  public function testHookNodeLoadAccess() {
    \Drupal::service('module_installer')->install(['node_access_test']);

    // Ensure that the loaded book in hook_node_load() does NOT depend on the
    // current user.
    $this->drupalLogin($this->bookAuthor);
    $this->book = $this->createBookNode('new');
    // Reset any internal static caching.
    $node_storage = \Drupal::entityManager()->getStorage('node');
    $node_storage->resetCache();

    // Log in as user without access to the book node, so no 'node test view'
    // permission.
    // @see node_access_test_node_grants().
    $this->drupalLogin($this->webUserWithoutNodeAccess);
    $book_node = $node_storage->load($this->book->id());
    $this->assertTrue(!empty($book_node->book));
    $this->assertEqual($book_node->book['bid'], $this->book->id());

    // Reset the internal cache to retrigger the hook_node_load() call.
    $node_storage->resetCache();

    $this->drupalLogin($this->webUser);
    $book_node = $node_storage->load($this->book->id());
    $this->assertTrue(!empty($book_node->book));
    $this->assertEqual($book_node->book['bid'], $this->book->id());
  }

  /**
   * Tests the book navigation block when book is unpublished.
   *
   * There was a fatal error with "Show block only on book pages" block mode.
   */
  public function testBookNavigationBlockOnUnpublishedBook() {
    // Create a new book.
    $this->createBook();

    // Create administrator user.
    $administratorUser = $this->drupalCreateUser(['administer blocks', 'administer nodes', 'bypass node access']);
    $this->drupalLogin($administratorUser);

    // Enable the block with "Show block only on book pages" mode.
    $this->drupalPlaceBlock('book_navigation', ['block_mode' => 'book pages']);

    // Unpublish book node.
    $edit = [];
    $this->drupalPostForm('node/' . $this->book->id() . '/edit', $edit, t('Save and unpublish'));

    // Test node page.
    $this->drupalGet('node/' . $this->book->id());
    $this->assertText($this->book->label(), 'Unpublished book with "Show block only on book pages" book navigation settings.');
  }

}