diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeAccessBaseTableTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessBaseTableTest.php
index e5253a8..8cfd8b9 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeAccessBaseTableTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessBaseTableTest.php
@@ -31,7 +31,7 @@ class NodeAccessBaseTableTest extends NodeTestBase {
   }
 
   /**
-   * Enable modules and create user with specific permissions.
+   * Enables modules and creates user with specific permissions.
    */
   public function setUp() {
     parent::setUp();
@@ -41,7 +41,7 @@ class NodeAccessBaseTableTest extends NodeTestBase {
   }
 
   /**
-   * Test the "private" node access.
+   * Tests the "private" node access.
    *
    * - Create 2 users with "access content" and "create article" permissions.
    * - Each user creates one private and one not private article.
@@ -58,10 +58,12 @@ class NodeAccessBaseTableTest extends NodeTestBase {
     $num_simple_users = 2;
     $simple_users = array();
 
-    // nodes keyed by uid and nid: $nodes[$uid][$nid] = $is_private;
+    // Nodes keyed by uid and nid: $nodes[$uid][$nid] = $is_private;
     $this->nodesByUser = array();
-    $titles = array(); // Titles keyed by nid
-    $private_nodes = array(); // Array of nids marked private.
+    // Titles keyed by nid.
+    $titles = array();
+    // Array of nids marked private.
+    $private_nodes = array();
     for ($i = 0; $i < $num_simple_users; $i++) {
       $simple_users[$i] = $this->drupalCreateUser(array('access content', 'create article content'));
     }
@@ -117,8 +119,8 @@ class NodeAccessBaseTableTest extends NodeTestBase {
         }
       }
 
-      // Check to see that the correct nodes are shown on taxonomy/private
-      // and taxonomy/public.
+      // Check to see that the correct nodes are shown on taxonomy/private and
+      // taxonomy/public.
       $this->assertTaxonomyPage(FALSE);
     }
 
@@ -141,7 +143,7 @@ class NodeAccessBaseTableTest extends NodeTestBase {
   /**
    * Checks taxonomy/term listings to ensure only accessible nodes are listed.
    *
-   * @param $is_admin
+   * @param boolean $is_admin
    *   A boolean indicating whether the current user is an administrator. If
    *   TRUE, all nodes should be listed. If FALSE, only public nodes and the
    *   user's own private nodes should be listed.
@@ -156,8 +158,8 @@ class NodeAccessBaseTableTest extends NodeTestBase {
       }
       foreach ($this->nodesByUser as $uid => $data) {
         foreach ($data as $nid => $is_private) {
-          // Private nodes should be visible on the private term page,
-          // public nodes should be visible on the public term page.
+          // Private nodes should be visible on the private term page, public
+          // nodes should be visible on the public term page.
           $should_be_visible = $tid_is_private == $is_private;
           // Non-administrators can only see their own nodes on the private
           // term page.
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeAccessRebuildTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessRebuildTest.php
index 612ba36..aea1f93 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeAccessRebuildTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessRebuildTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\node\Tests;
 
 /**
- * Rebuild the node_access table.
+ * Rebuilds the node_access table.
  */
 class NodeAccessRebuildTest extends NodeTestBase {
   public static function getInfo() {
@@ -27,6 +27,9 @@ class NodeAccessRebuildTest extends NodeTestBase {
     $this->web_user = $web_user;
   }
 
+  /**
+   * Tests the "rebuild permissions" link.
+   */
   function testNodeAccessRebuild() {
     $this->drupalGet('admin/reports/status');
     $this->clickLink(t('Rebuild permissions'));
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeAccessRecordsTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessRecordsTest.php
index 4c5598a..716f908 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeAccessRecordsTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessRecordsTest.php
@@ -28,7 +28,7 @@ class NodeAccessRecordsTest extends NodeTestBase {
   }
 
   /**
-   * Create a node and test the creation of node access rules.
+   * Creates a node and tests the creation of node access rules.
    */
   function testNodeAccessRecords() {
     // Create an article node.
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeAdminTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAdminTest.php
index d89100d..6d148aa 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeAdminTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAdminTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\node\Tests;
 
 /**
- * Test node administration page functionality.
+ * Tests node administration page functionality.
  */
 class NodeAdminTest extends NodeTestBase {
   public static function getInfo() {
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php
index 0c86de2..f716a80 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php
@@ -36,7 +36,7 @@ class NodeBlockFunctionalTest extends NodeTestBase {
   }
 
   /**
-   * Test the recent comments block.
+   * Tests the recent comments block.
    */
   function testRecentNodeBlock() {
     $this->drupalLogin($this->admin_user);
@@ -61,7 +61,7 @@ class NodeBlockFunctionalTest extends NodeTestBase {
     $this->drupalPost('admin/structure/block/manage/node/recent/configure', $block, t('Save block'));
     $this->assertText(t('The block configuration has been saved.'), t('Block saved.'));
 
-    // Test that block is not visible without nodes
+    // Test that block is not visible without nodes.
     $this->drupalGet('');
     $this->assertText(t('No content available.'), t('Block with "No content available." found.'));
 
@@ -85,8 +85,8 @@ class NodeBlockFunctionalTest extends NodeTestBase {
       ->condition('nid', $node3->nid)
       ->execute();
 
-    // Test that a user without the 'access content' permission cannot
-    // see the block.
+    // Test that a user without the 'access content' permission cannot see the
+    // block.
     $this->drupalLogout();
     $this->drupalGet('');
     $this->assertNoText($block['title'], t('Block was not found.'));
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeBlockTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeBlockTest.php
index 9aca3cf..12086a5 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeBlockTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeBlockTest.php
@@ -27,11 +27,16 @@ class NodeBlockTest extends NodeTestBase {
   function setUp() {
     parent::setUp();
 
-    // Create and login user
+    // Create and log in user.
     $admin_user = $this->drupalCreateUser(array('administer blocks'));
     $this->drupalLogin($admin_user);
   }
 
+  /**
+   * Tests the search form.
+   *
+   * Sees if the search form is available, and one can set is to a region.
+   */
   function testSearchFormBlock() {
     // Set block title to confirm that the interface is available.
     $this->drupalPost('admin/structure/block/manage/node/syndicate/configure', array('title' => $this->randomName(8)), t('Save block'));
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeBuildContentTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeBuildContentTest.php
index 2b0dbeb..7e74936 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeBuildContentTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeBuildContentTest.php
@@ -20,13 +20,17 @@ class NodeBuildContentTest extends NodeTestBase {
     );
   }
 
- /**
-  * Test to ensure that a node's content array is rebuilt on every call to node_build_content().
-  */
+  /**
+   * Tests whether nodes get rebuilt.
+   *
+   * Test to ensure that a node's content array is rebuilt on every call to
+   * node_build_content().
+   */
   function testNodeRebuildContent() {
     $node = $this->drupalCreateNode();
 
-    // Set a property in the content array so we can test for its existence later on.
+    // Set a property in the content array so we can test for its existence
+    // later on.
     $node->content['test_content_property'] = array('#value' => $this->randomString());
     $content = node_build_content($node);
 
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeCreationTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeCreationTest.php
index a8fbb07..a1f89a6 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeCreationTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeCreationTest.php
@@ -37,7 +37,7 @@ class NodeCreationTest extends NodeTestBase {
   }
 
   /**
-   * Create a "Basic page" node and verify its consistency in the database.
+   * Creates a "Basic page" node and verifies its consistency in the database.
    */
   function testNodeCreation() {
     // Create a node.
@@ -56,7 +56,10 @@ class NodeCreationTest extends NodeTestBase {
   }
 
   /**
-   * Create a page node and verify that a transaction rolls back the failed creation
+   * Tests a failing page creation.
+   *
+   * Create a page node and verify that a transaction rolls back the failed
+   * creation.
    */
   function testFailedPageCreation() {
     // Create a node.
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeFeedTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeFeedTest.php
index ca660e4..511d71c 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeFeedTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeFeedTest.php
@@ -10,7 +10,7 @@ namespace Drupal\node\Tests;
 use Drupal\simpletest\WebTestBase;
 
 /**
- * Test the node_feed() functionality.
+ * Tests the node_feed() functionality.
  */
 class NodeFeedTest extends WebTestBase {
   public static function getInfo() {
@@ -22,7 +22,7 @@ class NodeFeedTest extends WebTestBase {
   }
 
   /**
-   * Ensure that node_feed accepts and prints extra channel elements.
+   * Ensures that node_feed accepts and prints extra channel elements.
    */
   function testNodeFeedExtraChannelElements() {
     $response = node_feed(array(), array('copyright' => 'Drupal is a registered trademark of Dries Buytaert.'));
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeFieldMultilingualTestCase.php b/core/modules/node/lib/Drupal/node/Tests/NodeFieldMultilingualTestCase.php
index b96dae9..c876a2a 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeFieldMultilingualTestCase.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeFieldMultilingualTestCase.php
@@ -65,7 +65,7 @@ class NodeFieldMultilingualTestCase extends WebTestBase {
   }
 
   /**
-   * Test if field languages are correctly set through the node form.
+   * Tests whether field languages are correctly set through the node form.
    */
   function testMultilingualNodeForm() {
     // Create "Basic page" content.
@@ -112,7 +112,7 @@ class NodeFieldMultilingualTestCase extends WebTestBase {
     $this->assertRaw($body_value, t('Body correctly displayed using English as requested language'));
   }
 
-  /*
+  /**
    * Test multilingual field display settings.
    */
   function testMultilingualDisplaySettings() {
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodePostSettingsTest.php b/core/modules/node/lib/Drupal/node/Tests/NodePostSettingsTest.php
index 9ce688a..1fe8764 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodePostSettingsTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodePostSettingsTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\node\Tests;
 
 /**
- * Check that the post information displays when enabled for a content type.
+ * Checks that the post information displays when enabled for a content type.
  */
 class NodePostSettingsTest extends NodeTestBase {
   public static function getInfo() {
@@ -27,7 +27,10 @@ class NodePostSettingsTest extends NodeTestBase {
   }
 
   /**
-   * Set "Basic page" content type to display post information and confirm its presence on a new node.
+   * Tests post information on nodes.
+   *
+   * Set "Basic page" content type to display post information and confirm its
+   * presence on a new node.
    */
   function testPagePostInfo() {
 
@@ -50,7 +53,10 @@ class NodePostSettingsTest extends NodeTestBase {
   }
 
   /**
-   * Set "Basic page" content type to not display post information and confirm its absence on a new node.
+   * Test 'not display' post information.
+   *
+   * Set "Basic page" content type to not display post information and confirm
+   * its absence on a new node.
    */
   function testPageNotPostInfo() {
 
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeQueryAlterTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeQueryAlterTest.php
index 1f367cf..0813bb0 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeQueryAlterTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeQueryAlterTest.php
@@ -173,8 +173,8 @@ class NodeQueryAlterTest extends NodeTestBase {
     );
     drupal_write_record('node_access', $record);
 
-    // Test that the noAccessUser still doesn't have the 'view'
-    // privilege after adding the node_access record.
+    // Test that the noAccessUser still doesn't have the 'view' privilege after
+    // adding the node_access record.
     drupal_static_reset('node_access_view_all_nodes');
     try {
       $query = db_select('node', 'mytab')
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeRSSContentTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeRSSContentTest.php
index 97b3b25..74e5b1a 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeRSSContentTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeRSSContentTest.php
@@ -42,6 +42,8 @@ class NodeRSSContentTest extends NodeTestBase {
   }
 
   /**
+   * Tests whether custom data is added to the RSS feed.
+   *
    * Create a new node and ensure that it includes the custom data when added
    * to an RSS feed.
    */
@@ -55,8 +57,8 @@ class NodeRSSContentTest extends NodeTestBase {
     $rss_only_content = t('Extra data that should appear only in the RSS feed for node !nid.', array('!nid' => $node->nid));
     $this->assertText($rss_only_content, t('Node content designated for RSS appear in RSS feed.'));
 
-    // Check that content added in view modes other than 'rss' doesn't
-    // appear in RSS feed.
+    // Check that content added in view modes other than 'rss' doesn't appear
+    // in RSS feed.
     $non_rss_content = t('Extra data that should appear everywhere except the RSS feed for node !nid.', array('!nid' => $node->nid));
     $this->assertNoText($non_rss_content, t('Node content not designed for RSS doesn\'t appear in RSS feed.'));
 
@@ -69,8 +71,8 @@ class NodeRSSContentTest extends NodeTestBase {
     $this->assertRaw(format_xml_elements(array($test_element)), t('Extra RSS elements appear in RSS feed.'));
     $this->assertRaw($test_ns, t('Extra namespaces appear in RSS feed.'));
 
-    // Check that content added in 'rss' view mode doesn't appear when
-    // viewing node.
+    // Check that content added in 'rss' view mode doesn't appear when viewing
+    // node.
     $this->drupalGet("node/$node->nid");
     $this->assertNoText($rss_only_content, t('Node content designed for RSS doesn\'t appear when viewing node.'));
 
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php
index 6b1b141..ed1e4e7 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php
@@ -45,7 +45,8 @@ class NodeRevisionsTest extends NodeTestBase {
 
       // Create revision with random title and body and update variables.
       $this->drupalCreateNode($settings);
-      $node = node_load($node->nid); // Make sure we get revision information.
+      // Make sure we get revision information.
+      $node = node_load($node->nid);
       $settings = get_object_vars($node);
 
       $nodes[] = $node;
@@ -56,7 +57,7 @@ class NodeRevisionsTest extends NodeTestBase {
   }
 
   /**
-   * Check node revision related operations.
+   * Checks node revision related operations.
    */
   function testRevisions() {
     $nodes = $this->nodes;
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php
index 116ca18..f6ba259 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php
@@ -30,14 +30,16 @@ class NodeSaveTest extends NodeTestBase {
   function setUp() {
     parent::setUp();
 
-    // Create a user that is allowed to post; we'll use this to test the submission.
+    // Create a user that is allowed to post; we'll use this to test the
+    // submission.
     $web_user = $this->drupalCreateUser(array('create article content'));
     $this->drupalLogin($web_user);
     $this->web_user = $web_user;
   }
 
   /**
-   * Import test, to check if custom node ids are saved properly.
+   * Import test, to check whether custom node ids are saved properly.
+   *
    * Workflow:
    *  - first create a piece of content
    *  - save the content
@@ -71,6 +73,8 @@ class NodeSaveTest extends NodeTestBase {
   }
 
   /**
+   * Tests the "created" and "changed" timestamps.
+   *
    * Check that the "created" and "changed" timestamps are set correctly when
    * saving a new node or updating an existing node.
    */
@@ -108,8 +112,10 @@ class NodeSaveTest extends NodeTestBase {
       'uid' => $this->web_user->uid,
       'type' => 'article',
       'title' => $this->randomName(8),
-      'created' => 280299600, // Sun, 19 Nov 1978 05:00:00 GMT
-      'changed' => 979534800, // Drupal 1.0 release.
+      // Sun, 19 Nov 1978 05:00:00 GMT.
+      'created' => 280299600,
+      // Drupal 1.0 release.
+      'changed' => 979534800,
     );
 
     entity_create('node', $edit)->save();
@@ -128,6 +134,8 @@ class NodeSaveTest extends NodeTestBase {
   }
 
   /**
+   * Tests determing changes in hool_node_presave().
+   *
    * Tests determing changes in hook_node_presave() and verifies the static node
    * load cache is cleared upon save.
    */
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeTitleTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeTitleTest.php
index 1880d4f..4a630e4 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeTitleTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeTitleTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\node\Tests;
 
 /**
- * Test node title.
+ * Tests node title.
  */
 class NodeTitleTest extends NodeTestBase {
 
@@ -37,11 +37,12 @@ class NodeTitleTest extends NodeTestBase {
   }
 
   /**
-   *  Create one node and test if the node title has the correct value.
+   *  Creates one node and tests whether the node title has the correct value.
    */
   function testNodeTitle() {
     // Create "Basic page" content with title.
-    // Add the node to the frontpage so we can test if teaser links are clickable.
+    // Add the node to the frontpage so we can test if teaser links are
+    // clickable.
     $settings = array(
       'title' => $this->randomName(8),
       'promote' => 1,
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeTypeInitialLanguageTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeTypeInitialLanguageTest.php
index 3ba3fe6..5045f91 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeTypeInitialLanguageTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeTypeInitialLanguageTest.php
@@ -64,7 +64,7 @@ class NodeTypeInitialLanguageTest extends NodeTestBase {
     $this->drupalPost('admin/config/regional/language', $edit, t('Save configuration'));
 
     // Tests the initial language after changing the site default language.
-    // First unhide the language selector
+    // First unhide the language selector.
     $edit = array(
       'node_type_language_hidden' => FALSE,
     );
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeTypePersistenceTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeTypePersistenceTest.php
index b02bf7d..5608fd7 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeTypePersistenceTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeTypePersistenceTest.php
@@ -8,7 +8,7 @@
 namespace Drupal\node\Tests;
 
 /**
- * Test node type customizations persistence.
+ * Tests node type customizations persistence.
  */
 class NodeTypePersistenceTest extends NodeTestBase {
   public static function getInfo() {
@@ -20,7 +20,7 @@ class NodeTypePersistenceTest extends NodeTestBase {
   }
 
   /**
-   * Test node type customizations persist through disable and uninstall.
+   * Tests node type customizations persist through disable and uninstall.
    */
   function testNodeTypeCustomizationPersistence() {
     $web_user = $this->drupalCreateUser(array('bypass node access', 'administer content types', 'administer modules'));
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeTypeTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeTypeTest.php
index bf925c4..2865379 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeTypeTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeTypeTest.php
@@ -28,7 +28,7 @@ class NodeTypeTest extends NodeTestBase {
   }
 
   /**
-   * Ensure that node type functions (node_type_get_*) work correctly.
+   * Ensures that node type functions (node_type_get_*) work correctly.
    *
    * Load available node types and validate the returned data.
    */
diff --git a/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php b/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php
index eaba85a..3387c5f 100644
--- a/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php
@@ -27,7 +27,7 @@ class PageEditTest extends NodeTestBase {
   }
 
   /**
-   * Check node edit functionality.
+   * Checks node edit functionality.
    */
   function testPageEdit() {
     $this->drupalLogin($this->web_user);
@@ -51,7 +51,8 @@ class PageEditTest extends NodeTestBase {
     $actual_url = $this->getURL();
     $this->assertEqual($edit_url, $actual_url, t('On edit page.'));
 
-    // Check that the title and body fields are displayed with the correct values.
+    // Check that the title and body fields are displayed with the correct
+    // values.
     $active = '<span class="element-invisible">' . t('(active tab)') . '</span>';
     $link_text = t('!local-task-title!active', array('!local-task-title' => t('Edit'), '!active' => $active));
     $this->assertText(strip_tags($link_text), 0, t('Edit tab found and marked active.'));
@@ -65,7 +66,8 @@ class PageEditTest extends NodeTestBase {
     // Stay on the current page, without reloading.
     $this->drupalPost(NULL, $edit, t('Save'));
 
-    // Check that the title and body fields are displayed with the updated values.
+    // Check that the title and body fields are displayed with the updated
+    // values.
     $this->assertText($edit[$title_key], t('Title displayed.'));
     $this->assertText($edit[$body_key], t('Body displayed.'));
 
@@ -94,7 +96,7 @@ class PageEditTest extends NodeTestBase {
   }
 
   /**
-   * Check changing node authored by fields.
+   * Checks changing node authored by fields.
    */
   function testPageAuthoredBy() {
     $this->drupalLogin($this->admin_user);
@@ -125,8 +127,8 @@ class PageEditTest extends NodeTestBase {
     $node = node_load($node->nid, TRUE);
     $this->assertIdentical($node->uid, '0', 'Node authored by anonymous user.');
 
-    // Change the authored by field to another user's name (that is not
-    // logged in).
+    // Change the authored by field to another user's name (that is not logged
+    // in).
     $edit['name'] = $this->web_user->name;
     $this->drupalPost('node/' . $node->nid . '/edit', $edit, t('Save'));
     $node = node_load($node->nid, TRUE);
diff --git a/core/modules/node/lib/Drupal/node/Tests/PagePreviewTest.php b/core/modules/node/lib/Drupal/node/Tests/PagePreviewTest.php
index 5bfd342..6c4d6cd 100644
--- a/core/modules/node/lib/Drupal/node/Tests/PagePreviewTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/PagePreviewTest.php
@@ -24,7 +24,7 @@ class PagePreviewTest extends NodeTestBase {
   }
 
   /**
-   * Check the node preview functionality.
+   * Checks the node preview functionality.
    */
   function testPagePreview() {
     $langcode = LANGUAGE_NOT_SPECIFIED;
@@ -42,13 +42,14 @@ class PagePreviewTest extends NodeTestBase {
     $this->assertText($edit[$title_key], t('Title displayed.'));
     $this->assertText($edit[$body_key], t('Body displayed.'));
 
-    // Check that the title and body fields are displayed with the correct values.
+    // Check that the title and body fields are displayed with the correct
+    // values.
     $this->assertFieldByName($title_key, $edit[$title_key], t('Title field displayed.'));
     $this->assertFieldByName($body_key, $edit[$body_key], t('Body field displayed.'));
   }
 
   /**
-   * Check the node preview functionality, when using revisions.
+   * Checks the node preview functionality, when using revisions.
    */
   function testPagePreviewWithRevisions() {
     $langcode = LANGUAGE_NOT_SPECIFIED;
@@ -69,7 +70,8 @@ class PagePreviewTest extends NodeTestBase {
     $this->assertText($edit[$title_key], t('Title displayed.'));
     $this->assertText($edit[$body_key], t('Body displayed.'));
 
-    // Check that the title and body fields are displayed with the correct values.
+    // Check that the title and body fields are displayed with the correct
+    // values.
     $this->assertFieldByName($title_key, $edit[$title_key], t('Title field displayed.'));
     $this->assertFieldByName($body_key, $edit[$body_key], t('Body field displayed.'));
 
diff --git a/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php b/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php
index e3f3e54..3c49c96 100644
--- a/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php
@@ -17,7 +17,10 @@ class PageViewTest extends NodeTestBase {
   }
 
   /**
-   * Creates a node and then an anonymous and unpermissioned user attempt to edit the node.
+   * Tests whether an unpermissioned user can edit a node.
+   *
+   * Creates a node and then an anonymous and unpermissioned user attempt to
+   * edit the node.
    */
   function testPageView() {
     // Create a node to view.
diff --git a/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php b/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php
index ca66678..bba5995 100644
--- a/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php
@@ -17,7 +17,10 @@ class SummaryLengthTest extends NodeTestBase {
   }
 
   /**
-   * Creates a node and then an anonymous and unpermissioned user attempt to edit the node.
+   * Test if the summary in 600 characters.
+   *
+   * Creates a node and then an anonymous and unpermissioned user attempt to
+   * edit the node.
    */
   function testSummaryLength() {
     // Create a node to view.
@@ -34,7 +37,7 @@ class SummaryLengthTest extends NodeTestBase {
 
     // Attempt to access the front page.
     $this->drupalGet("node");
-    // The node teaser when it has 600 characters in length
+    // The node teaser when it has 600 characters in length.
     $expected = 'What is a Drupalism?';
     $this->assertRaw($expected, t('Check that the summary is 600 characters in length'), 'Node');
 
@@ -43,7 +46,8 @@ class SummaryLengthTest extends NodeTestBase {
     $instance['display']['teaser']['settings']['trim_length'] = 200;
     field_update_instance($instance);
 
-    // Attempt to access the front page again and check if the summary is now only 200 characters in length.
+    // Attempt to access the front page again and check if the summary is now
+    // only 200 characters in length.
     $this->drupalGet("node");
     $this->assertNoRaw($expected, t('Check that the summary is not longer than 200 characters'), 'Node');
   }