--- /dev/null
+<?php
+
+namespace Drupal\pathauto\Tests;
+
+use Drupal\simpletest\WebTestBase;
+use Drupal\comment\Tests\CommentTestTrait;
+
+/**
+ * Tests pathauto settings form.
+ *
+ * @group pathauto
+ */
+class PathautoEnablingEntityTypesTest extends WebTestBase {
+
+ use PathautoTestHelperTrait;
+ use CommentTestTrait;
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = array('node', 'pathauto', 'comment');
+
+ /**
+ * Admin user.
+ *
+ * @var \Drupal\user\UserInterface
+ */
+ protected $adminUser;
+
+ /**
+ * {inheritdoc}
+ */
+ function setUp() {
+ parent::setUp();
+
+ $this->drupalCreateContentType(array('type' => 'article'));
+ $this->addDefaultCommentField('node', 'article');
+
+ $permissions = array(
+ 'administer pathauto',
+ 'administer url aliases',
+ 'create url aliases',
+ 'administer nodes',
+ 'post comments',
+ );
+ $this->adminUser = $this->drupalCreateUser($permissions);
+ $this->drupalLogin($this->adminUser);
+ }
+
+ /**
+ * A suite of tests to verify if the feature to enable and disable the
+ * ability to define alias patterns for a given entity type works. Test with
+ * the comment module, as it is not enabled by default.
+ */
+ function testEnablingEntityTypes() {
+ // Verify that the comment entity type is not available when trying to add
+ // a new pattern, nor "broken".
+ $this->drupalGet('/admin/config/search/path/patterns/add');
+ $this->assertEqual(count($this->cssSelect('option[value = "canonical_entities:comment"]:contains(Comment)')), 0);
+ $this->assertEqual(count($this->cssSelect('option:contains(Broken)')), 0);
+
+ // Enable the entity type and create a pattern for it.
+ $this->drupalGet('/admin/config/search/path/settings');
+ $edit = [
+ 'enabled_entity_types[comment]' => TRUE,
+ ];
+ $this->drupalPostForm(NULL, $edit, 'Save configuration');
+ $this->createPattern('comment', '/comment/[comment:body]');
+
+ // Create a node, a comment type and a comment entity.
+ $node = $this->drupalCreateNode(['type' => 'article']);
+ $this->drupalGet('/node/' . $node->id());
+ $edit = [
+ 'comment_body[0][value]' => 'test-body',
+ ];
+ $this->drupalPostForm(NULL, $edit, 'Save');
+
+ // Verify that an alias has been generated and that the type can no longer
+ // be disabled.
+ $this->assertAliasExists(['alias' => '/comment/test-body']);
+ $this->drupalGet('/admin/config/search/path/settings');
+ $this->assertEqual(count($this->cssSelect('input[name = "enabled_entity_types[comment]"][disabled = "disabled"]')), 1);
+ }
+
+}