diff --git a/core/modules/comment/migration_templates/d7_comment.yml b/core/modules/comment/migration_templates/d7_comment.yml
index 94a2884477..5e609a6556 100644
--- a/core/modules/comment/migration_templates/d7_comment.yml
+++ b/core/modules/comment/migration_templates/d7_comment.yml
@@ -16,8 +16,15 @@ process:
     source: pid
   entity_id: nid
   entity_type: 'constants/entity_type'
-  comment_type: comment_type
-  field_name: comment_type
+  comment_type:
+    -
+      plugin: migration_lookup
+      source: comment_type
+      migration: d7_comment_type
+    -
+      plugin: skip_on_empty
+      method: row
+  field_name: '@comment_type'
   subject: subject
   uid: uid
   name: name
diff --git a/core/modules/comment/migration_templates/d7_comment_entity_display.yml b/core/modules/comment/migration_templates/d7_comment_entity_display.yml
index 2004505f3c..3ae948ecb3 100644
--- a/core/modules/comment/migration_templates/d7_comment_entity_display.yml
+++ b/core/modules/comment/migration_templates/d7_comment_entity_display.yml
@@ -13,7 +13,14 @@ source:
       weight: 20
 process:
   entity_type: 'constants/entity_type'
-  field_name: bundle
+  field_name:
+    -
+      plugin: migration_lookup
+      source: bundle
+      migration: d7_comment_type
+    -
+      plugin: skip_on_empty
+      method: row
   view_mode: 'constants/view_mode'
   options: 'constants/options'
   bundle: node_type
diff --git a/core/modules/comment/migration_templates/d7_comment_entity_form_display_subject.yml b/core/modules/comment/migration_templates/d7_comment_entity_form_display_subject.yml
index c27303e876..46f231d0f8 100644
--- a/core/modules/comment/migration_templates/d7_comment_entity_form_display_subject.yml
+++ b/core/modules/comment/migration_templates/d7_comment_entity_form_display_subject.yml
@@ -22,7 +22,14 @@ process:
     map:
       0: true
       1: false
-  bundle: bundle
+  bundle:
+    -
+      plugin: migration_lookup
+      source: bundle
+      migration: d7_comment_type
+    -
+      plugin: skip_on_empty
+      method: row
 destination:
   plugin: component_entity_form_display
 migration_dependencies:
diff --git a/core/modules/comment/migration_templates/d7_comment_field.yml b/core/modules/comment/migration_templates/d7_comment_field.yml
index b4b3543db1..95a4602349 100644
--- a/core/modules/comment/migration_templates/d7_comment_field.yml
+++ b/core/modules/comment/migration_templates/d7_comment_field.yml
@@ -9,9 +9,16 @@ source:
     type: comment
 process:
   entity_type: 'constants/entity_type'
-  field_name: bundle
+  field_name:
+    -
+      plugin: migration_lookup
+      source: bundle
+      migration: d7_comment_type
+    -
+      plugin: skip_on_empty
+      method: row
   type: 'constants/type'
-  'settings/comment_type': bundle
+  'settings/comment_type': '@field_name'
 destination:
   plugin: entity:field_storage_config
 migration_dependencies:
diff --git a/core/modules/comment/migration_templates/d7_comment_field_instance.yml b/core/modules/comment/migration_templates/d7_comment_field_instance.yml
index 80a1a5198c..147efcf25c 100644
--- a/core/modules/comment/migration_templates/d7_comment_field_instance.yml
+++ b/core/modules/comment/migration_templates/d7_comment_field_instance.yml
@@ -12,7 +12,14 @@ process:
   entity_type: 'constants/entity_type'
   label: 'constants/label'
   required: 'constants/required'
-  field_name: bundle
+  field_name:
+    -
+      plugin: migration_lookup
+      source: bundle
+      migration: d7_comment_type
+    -
+      plugin: skip_on_empty
+      method: row
   bundle: node_type
   'default_value/0/status': 'constants/required'
   'settings/default_mode': default_mode
diff --git a/core/modules/comment/migration_templates/d7_comment_type.yml b/core/modules/comment/migration_templates/d7_comment_type.yml
index 090bfdde29..38030a13bd 100644
--- a/core/modules/comment/migration_templates/d7_comment_type.yml
+++ b/core/modules/comment/migration_templates/d7_comment_type.yml
@@ -8,7 +8,22 @@ source:
     entity_type: node
 process:
   target_entity_type_id: 'constants/entity_type'
-  id: bundle
+  id:
+    plugin: static_map
+    source: bundle
+    bypass: true
+    # If the destination site installed the Standard profile, there will
+    # already be a 'comment' comment type, and the Article node type will be
+    # using it. To avoid data integrity issues, we want to reuse that comment
+    # type and the associated field. If the destination site did NOT install
+    # Standard, this will create the 'comment' comment type. The Forum module,
+    # meanwhile, also provides its own comment type (comment_forum), which we
+    # want to reuse if it exists, for the same reason that we want to reuse
+    # the 'comment' comment type if it exists.
+    # See https://www.drupal.org/node/2853872 for more information.
+    map:
+      comment_node_article: comment
+      comment_node_forum: comment_forum
   label: label
 destination:
   plugin: entity:comment_type
diff --git a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityDisplayTest.php b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityDisplayTest.php
index 871765b834..b64ed72ec3 100644
--- a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityDisplayTest.php
+++ b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityDisplayTest.php
@@ -50,10 +50,10 @@ protected function assertDisplay($id, $component_id) {
    */
   public function testMigration() {
     $this->assertDisplay('node.page.default', 'comment_node_page');
-    $this->assertDisplay('node.article.default', 'comment_node_article');
+    $this->assertDisplay('node.article.default', 'comment');
     $this->assertDisplay('node.book.default', 'comment_node_book');
     $this->assertDisplay('node.blog.default', 'comment_node_blog');
-    $this->assertDisplay('node.forum.default', 'comment_node_forum');
+    $this->assertDisplay('node.forum.default', 'comment_forum');
     $this->assertDisplay('node.test_content_type.default', 'comment_node_test_content_type');
   }
 
diff --git a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityFormDisplaySubjectTest.php b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityFormDisplaySubjectTest.php
index 8ce439a9cf..5c9e63c8b8 100644
--- a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityFormDisplaySubjectTest.php
+++ b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentEntityFormDisplaySubjectTest.php
@@ -45,10 +45,10 @@ protected function assertDisplay($id) {
    */
   public function testMigration() {
     $this->assertDisplay('comment.comment_node_page.default');
-    $this->assertDisplay('comment.comment_node_article.default');
+    $this->assertDisplay('comment.comment.default');
     $this->assertDisplay('comment.comment_node_book.default');
     $this->assertDisplay('comment.comment_node_blog.default');
-    $this->assertDisplay('comment.comment_node_forum.default');
+    $this->assertDisplay('comment.comment_forum.default');
     $this->assertDisplay('comment.comment_node_test_content_type.default');
   }
 
diff --git a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldInstanceTest.php b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldInstanceTest.php
index cc82c82766..7172daca69 100644
--- a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldInstanceTest.php
+++ b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldInstanceTest.php
@@ -76,10 +76,10 @@ protected function assertEntity($id, $field_name, $bundle, $default_mode, $per_p
    */
   public function testMigration() {
     $this->assertEntity('node.page.comment_node_page', 'comment_node_page', 'page', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
-    $this->assertEntity('node.article.comment_node_article', 'comment_node_article', 'article', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
+    $this->assertEntity('node.article.comment', 'comment', 'article', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
     $this->assertEntity('node.blog.comment_node_blog', 'comment_node_blog', 'blog', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
     $this->assertEntity('node.book.comment_node_book', 'comment_node_book', 'book', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
-    $this->assertEntity('node.forum.comment_node_forum', 'comment_node_forum', 'forum', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
+    $this->assertEntity('node.forum.comment_forum', 'comment_forum', 'forum', TRUE, 50, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
     $this->assertEntity('node.test_content_type.comment_node_test_content_type', 'comment_node_test_content_type', 'test_content_type', TRUE, 30, FALSE, CommentItemInterface::FORM_BELOW, TRUE);
   }
 
diff --git a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldTest.php b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldTest.php
index b995bdb0a5..1596aece5b 100644
--- a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldTest.php
+++ b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentFieldTest.php
@@ -51,10 +51,10 @@ protected function assertEntity($id, $comment_type) {
    */
   public function testMigration() {
     $this->assertEntity('node.comment_node_page', 'comment_node_page');
-    $this->assertEntity('node.comment_node_article', 'comment_node_article');
+    $this->assertEntity('node.comment', 'comment');
     $this->assertEntity('node.comment_node_blog', 'comment_node_blog');
     $this->assertEntity('node.comment_node_book', 'comment_node_book');
-    $this->assertEntity('node.comment_node_forum', 'comment_node_forum');
+    $this->assertEntity('node.comment_forum', 'comment_forum');
     $this->assertEntity('node.comment_node_test_content_type', 'comment_node_test_content_type');
   }
 
diff --git a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentTypeTest.php b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentTypeTest.php
index 60f640d297..f9996f6f98 100644
--- a/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentTypeTest.php
+++ b/core/modules/comment/tests/src/Kernel/Migrate/d7/MigrateCommentTypeTest.php
@@ -48,10 +48,10 @@ protected function assertEntity($id, $label) {
    */
   public function testMigration() {
     $this->assertEntity('comment_node_page', 'Basic page comment');
-    $this->assertEntity('comment_node_article', 'Article comment');
+    $this->assertEntity('comment', 'Article comment');
     $this->assertEntity('comment_node_blog', 'Blog entry comment');
     $this->assertEntity('comment_node_book', 'Book page comment');
-    $this->assertEntity('comment_node_forum', 'Forum topic comment');
+    $this->assertEntity('comment_forum', 'Forum topic comment');
     $this->assertEntity('comment_node_test_content_type', 'Test content type comment');
 
     $migration = $this->getMigration('d7_comment_type');
diff --git a/core/modules/field/migration_templates/d7_field_formatter_settings.yml b/core/modules/field/migration_templates/d7_field_formatter_settings.yml
index 126fd29a20..2c2ec93d42 100644
--- a/core/modules/field/migration_templates/d7_field_formatter_settings.yml
+++ b/core/modules/field/migration_templates/d7_field_formatter_settings.yml
@@ -26,7 +26,17 @@ process:
       plugin: skip_on_empty
       method: row
   entity_type: entity_type
-  bundle: bundle
+  # The bundle needs to be statically mapped in order to support comment types
+  # that might already exist before this migration is run. See
+  # core/modules/comment/migration_templates/d7_comment_type.yml and
+  # https://www.drupal.org/node/2853872 for more information.
+  bundle:
+    plugin: static_map
+    source: bundle
+    bypass: true
+    map:
+      comment_node_article: comment
+      comment_node_forum: comment_forum
   view_mode:
     -
       plugin: migration_lookup
diff --git a/core/modules/field/migration_templates/d7_field_instance.yml b/core/modules/field/migration_templates/d7_field_instance.yml
index f3518c91a2..d0f7504e86 100644
--- a/core/modules/field/migration_templates/d7_field_instance.yml
+++ b/core/modules/field/migration_templates/d7_field_instance.yml
@@ -11,7 +11,17 @@ source:
 process:
   entity_type: entity_type
   field_name: field_name
-  bundle: bundle
+  # The bundle needs to be statically mapped in order to support comment types
+  # that might already exist before this migration is run. See
+  # core/modules/comment/migration_templates/d7_comment_type.yml and
+  # https://www.drupal.org/node/2853872 for more information.
+  bundle:
+    plugin: static_map
+    source: bundle
+    bypass: true
+    map:
+      comment_node_article: comment
+      comment_node_forum: comment_forum
   label: label
   description: description
   required: required
diff --git a/core/modules/field/migration_templates/d7_field_instance_widget_settings.yml b/core/modules/field/migration_templates/d7_field_instance_widget_settings.yml
index e2bbcf4496..9202d4f099 100644
--- a/core/modules/field/migration_templates/d7_field_instance_widget_settings.yml
+++ b/core/modules/field/migration_templates/d7_field_instance_widget_settings.yml
@@ -26,7 +26,17 @@ process:
     -
       plugin: skip_on_empty
       method: row
-  bundle: bundle
+  # The bundle needs to be statically mapped in order to support comment types
+  # that might already exist before this migration is run. See
+  # core/modules/comment/migration_templates/d7_comment_type.yml and
+  # https://www.drupal.org/node/2853872 for more information.
+  bundle:
+    plugin: static_map
+    source: bundle
+    bypass: true
+    map:
+      comment_node_article: comment
+      comment_node_forum: comment_forum
   form_mode: 'constants/form_mode'
   field_name: field_name
   entity_type: entity_type
diff --git a/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldFormatterSettingsTest.php b/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldFormatterSettingsTest.php
index dd38569de1..8ba7c3b29d 100644
--- a/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldFormatterSettingsTest.php
+++ b/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldFormatterSettingsTest.php
@@ -44,7 +44,7 @@ protected function setUp() {
       'label' => $this->randomMachineName(),
     ])->save();
     CommentType::create([
-      'id' => 'comment_node_article',
+      'id' => 'comment',
       'label' => $this->randomMachineName(),
     ])->save();
     CommentType::create([
@@ -56,7 +56,7 @@ protected function setUp() {
       'label' => $this->randomMachineName(),
     ])->save();
     CommentType::create([
-      'id' => 'comment_node_forum',
+      'id' => 'comment_forum',
       'label' => $this->randomMachineName(),
     ])->save();
     CommentType::create([
@@ -206,8 +206,8 @@ protected function assertComponentNotExists($display_id, $component_id) {
    * Tests migration of D7 field formatter settings.
    */
   public function testMigration() {
-    $this->assertEntity('comment.comment_node_article.default');
-    $this->assertComponent('comment.comment_node_article.default', 'comment_body', 'text_default', 'hidden', 0);
+    $this->assertEntity('comment.comment.default');
+    $this->assertComponent('comment.comment.default', 'comment_body', 'text_default', 'hidden', 0);
 
     $this->assertEntity('comment.comment_node_blog.default');
     $this->assertComponent('comment.comment_node_blog.default', 'comment_body', 'text_default', 'hidden', 0);
@@ -215,8 +215,8 @@ public function testMigration() {
     $this->assertEntity('comment.comment_node_book.default');
     $this->assertComponent('comment.comment_node_book.default', 'comment_body', 'text_default', 'hidden', 0);
 
-    $this->assertEntity('comment.comment_node_forum.default');
-    $this->assertComponent('comment.comment_node_forum.default', 'comment_body', 'text_default', 'hidden', 0);
+    $this->assertEntity('comment.comment_forum.default');
+    $this->assertComponent('comment.comment_forum.default', 'comment_body', 'text_default', 'hidden', 0);
 
     $this->assertEntity('comment.comment_node_page.default');
     $this->assertComponent('comment.comment_node_page.default', 'comment_body', 'text_default', 'hidden', 0);
diff --git a/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldInstanceTest.php b/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldInstanceTest.php
index 1e3df9e4fc..801961bbeb 100644
--- a/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldInstanceTest.php
+++ b/core/modules/field/tests/src/Kernel/Migrate/d7/MigrateFieldInstanceTest.php
@@ -17,9 +17,7 @@
 class MigrateFieldInstanceTest extends MigrateDrupal7TestBase {
 
   /**
-   * The modules to be enabled during the test.
-   *
-   * @var array
+   * {@inheritdoc}
    */
   public static $modules = [
     'comment',
@@ -40,12 +38,12 @@ class MigrateFieldInstanceTest extends MigrateDrupal7TestBase {
   protected function setUp() {
     parent::setUp();
     $this->installConfig(static::$modules);
-    $this->createType('page');
-    $this->createType('article');
-    $this->createType('blog');
-    $this->createType('book');
-    $this->createType('forum');
-    $this->createType('test_content_type');
+    $this->createType('page', 'comment_node_page');
+    $this->createType('article', 'comment');
+    $this->createType('blog', 'comment_node_blog');
+    $this->createType('book', 'comment_node_book');
+    $this->createType('forum', 'comment_forum');
+    $this->createType('test_content_type', 'comment_node_test_content_type');
     Vocabulary::create(['vid' => 'test_vocabulary'])->save();
     $this->executeMigrations(['d7_field', 'd7_field_instance']);
   }
@@ -53,17 +51,19 @@ protected function setUp() {
   /**
    * Creates a node type with a corresponding comment type.
    *
-   * @param string $id
+   * @param string $node_type
    *   The node type ID.
+   * @param string $comment_type
+   *   The ID of the comment type.
    */
-  protected function createType($id) {
+  protected function createType($node_type, $comment_type) {
     NodeType::create([
-      'type' => $id,
+      'type' => $node_type,
       'label' => $this->randomString(),
     ])->save();
 
     CommentType::create([
-      'id' => 'comment_node_' . $id,
+      'id' => $comment_type,
       'label' => $this->randomString(),
       'target_entity_type_id' => 'node',
     ])->save();
@@ -118,7 +118,7 @@ protected function assertLinkFields($id, $title_setting) {
   public function testFieldInstances() {
     $this->assertEntity('comment.comment_node_page.comment_body', 'Comment', 'text_long', TRUE, FALSE);
     $this->assertEntity('node.page.body', 'Body', 'text_with_summary', FALSE, FALSE);
-    $this->assertEntity('comment.comment_node_article.comment_body', 'Comment', 'text_long', TRUE, FALSE);
+    $this->assertEntity('comment.comment.comment_body', 'Comment', 'text_long', TRUE, FALSE);
     $this->assertEntity('node.article.body', 'Body', 'text_with_summary', FALSE, TRUE);
     $this->assertEntity('node.article.field_tags', 'Tags', 'entity_reference', FALSE, TRUE);
     $this->assertEntity('node.article.field_image', 'Image', 'image', FALSE, TRUE);
@@ -127,7 +127,7 @@ public function testFieldInstances() {
     $this->assertEntity('comment.comment_node_book.comment_body', 'Comment', 'text_long', TRUE, FALSE);
     $this->assertEntity('node.book.body', 'Body', 'text_with_summary', FALSE, FALSE);
     $this->assertEntity('node.forum.taxonomy_forums', 'Forums', 'entity_reference', TRUE, FALSE);
-    $this->assertEntity('comment.comment_node_forum.comment_body', 'Comment', 'text_long', TRUE, FALSE);
+    $this->assertEntity('comment.comment_forum.comment_body', 'Comment', 'text_long', TRUE, FALSE);
     $this->assertEntity('node.forum.body', 'Body', 'text_with_summary', FALSE, FALSE);
     $this->assertEntity('comment.comment_node_test_content_type.comment_body', 'Comment', 'text_long', TRUE, FALSE);
     $this->assertEntity('node.test_content_type.field_boolean', 'Boolean', 'boolean', FALSE, FALSE);
diff --git a/core/modules/field/tests/src/Kernel/Migrate/d7/RollbackFieldInstanceTest.php b/core/modules/field/tests/src/Kernel/Migrate/d7/RollbackFieldInstanceTest.php
index e71ac3ce95..90c62cbb50 100644
--- a/core/modules/field/tests/src/Kernel/Migrate/d7/RollbackFieldInstanceTest.php
+++ b/core/modules/field/tests/src/Kernel/Migrate/d7/RollbackFieldInstanceTest.php
@@ -26,7 +26,7 @@ public function testFieldInstances() {
     $field_instance_ids = [
       'comment.comment_node_page.comment_body',
       'node.page.body',
-      'comment.comment_node_article.comment_body',
+      'comment.comment.comment_body',
       'node.article.body',
       'node.article.field_tags',
       'node.article.field_image',
@@ -35,7 +35,7 @@ public function testFieldInstances() {
       'comment.comment_node_book.comment_body',
       'node.book.body',
       'node.forum.taxonomy_forums',
-      'comment.comment_node_forum.comment_body',
+      'comment.comment_forum.comment_body',
       'node.forum.body',
       'comment.comment_node_test_content_type.comment_body',
       'node.test_content_type.field_boolean',
diff --git a/core/modules/migrate_drupal_ui/tests/src/Functional/d7/MigrateUpgrade7Test.php b/core/modules/migrate_drupal_ui/tests/src/Functional/d7/MigrateUpgrade7Test.php
index 6bb46a9fec..f9cdc40b9c 100644
--- a/core/modules/migrate_drupal_ui/tests/src/Functional/d7/MigrateUpgrade7Test.php
+++ b/core/modules/migrate_drupal_ui/tests/src/Functional/d7/MigrateUpgrade7Test.php
@@ -40,13 +40,13 @@ protected function getEntityCounts() {
       'block_content' => 1,
       'block_content_type' => 1,
       'comment' => 1,
-      'comment_type' => 8,
+      'comment_type' => 6,
       // Module 'language' comes with 'en', 'und', 'zxx'. Migration adds 'is'.
       'configurable_language' => 4,
       'contact_form' => 3,
       'editor' => 2,
-      'field_config' => 52,
-      'field_storage_config' => 39,
+      'field_config' => 48,
+      'field_storage_config' => 37,
       'file' => 2,
       'filter_format' => 7,
       'image_style' => 6,
@@ -68,9 +68,9 @@ protected function getEntityCounts() {
       'menu_link_content' => 7,
       'view' => 14,
       'date_format' => 11,
-      'entity_form_display' => 18,
+      'entity_form_display' => 16,
       'entity_form_mode' => 1,
-      'entity_view_display' => 29,
+      'entity_view_display' => 27,
       'entity_view_mode' => 14,
       'base_field_override' => 9,
     ];
diff --git a/core/modules/user/tests/src/Kernel/Migrate/d7/MigrateUserTest.php b/core/modules/user/tests/src/Kernel/Migrate/d7/MigrateUserTest.php
index 7d73dafecd..e3202b32ef 100644
--- a/core/modules/user/tests/src/Kernel/Migrate/d7/MigrateUserTest.php
+++ b/core/modules/user/tests/src/Kernel/Migrate/d7/MigrateUserTest.php
@@ -43,12 +43,12 @@ protected function setUp() {
 
     // Prepare to migrate user pictures as well.
     $this->installEntitySchema('file');
-    $this->createType('page');
-    $this->createType('article');
-    $this->createType('blog');
-    $this->createType('book');
-    $this->createType('forum');
-    $this->createType('test_content_type');
+    $this->createType('page', 'comment_node_page');
+    $this->createType('article', 'comment');
+    $this->createType('blog', 'comment_node_blog');
+    $this->createType('book', 'comment_node_book');
+    $this->createType('forum', 'comment_forum');
+    $this->createType('test_content_type', 'comment_node_test_content_type');
     Vocabulary::create(['vid' => 'test_vocabulary'])->save();
     $this->executeMigrations([
       'language',
@@ -64,17 +64,19 @@ protected function setUp() {
   /**
    * Creates a node type with a corresponding comment type.
    *
-   * @param string $id
+   * @param string $node_type
    *   The node type ID.
+   * @param string $comment_type
+   *   The comment type ID.
    */
-  protected function createType($id) {
+  protected function createType($node_type, $comment_type) {
     NodeType::create([
-      'type' => $id,
+      'type' => $node_type,
       'label' => $this->randomString(),
     ])->save();
 
     CommentType::create([
-      'id' => 'comment_node_' . $id,
+      'id' => $comment_type,
       'label' => $this->randomString(),
       'target_entity_type_id' => 'node',
     ])->save();