diff --git a/core/lib/Drupal/Core/Url.php b/core/lib/Drupal/Core/Url.php
index 999f447..4dde31a 100644
--- a/core/lib/Drupal/Core/Url.php
+++ b/core/lib/Drupal/Core/Url.php
@@ -470,7 +470,13 @@ public function toString() {
       return $this->unroutedUrlAssembler()->assemble($this->getUri(), $this->getOptions());
     }
 
-    return $this->urlGenerator()->generateFromRoute($this->getRouteName(), $this->getRouteParameters(), $this->getOptions());
+    try {
+      return $this->urlGenerator()->generateFromRoute($this->getRouteName(), $this->getRouteParameters(), $this->getOptions());
+    }
+    catch (\Exception $e) {
+      debug($e->getMessage());
+      return '';
+    }
   }
 
   /**
diff --git a/core/modules/node/src/Tests/NodeViewTest.php b/core/modules/node/src/Tests/NodeViewTest.php
index 18f7133..01a640d 100644
--- a/core/modules/node/src/Tests/NodeViewTest.php
+++ b/core/modules/node/src/Tests/NodeViewTest.php
@@ -26,13 +26,13 @@ public function testHtmlHeadLinks() {
     $this->drupalGet($node->getSystemPath());
 
     $result = $this->xpath('//link[@rel = "version-history"]');
-    $this->assertEqual($result[0]['href'], Url::fromUri("base://node/{$node->id()}/revisions")->toString());
+    $this->assertEqual($result[0]['href'], $node->url('version-history'));
 
     $result = $this->xpath('//link[@rel = "edit-form"]');
-    $this->assertEqual($result[0]['href'], Url::fromUri("base://node/{$node->id()}/edit")->toString());
+    $this->assertEqual($result[0]['href'], $node->url('edit-form'));
 
     $result = $this->xpath('//link[@rel = "canonical"]');
-    $this->assertEqual($result[0]['href'], Url::fromUri("base://node/{$node->id()}")->toString());
+    $this->assertEqual($result[0]['href'], $node->url());
   }
 
 }
diff --git a/core/modules/rest/src/Tests/RESTTestBase.php b/core/modules/rest/src/Tests/RESTTestBase.php
index 9f453d9..4ad8020 100644
--- a/core/modules/rest/src/Tests/RESTTestBase.php
+++ b/core/modules/rest/src/Tests/RESTTestBase.php
@@ -92,7 +92,7 @@ protected function httpRequest($path, $method, $body = NULL, $mime_type = NULL)
         $curl_options = array(
           CURLOPT_HTTPGET => TRUE,
           CURLOPT_CUSTOMREQUEST => 'GET',
-          CURLOPT_URL => $this->container->get('url_generator')->generateFromPath($path, $options),
+          CURLOPT_URL => Url::fromUri('base://' . $path, $options)->toString(),
           CURLOPT_NOBODY => FALSE,
           CURLOPT_HTTPHEADER => array('Accept: ' . $mime_type),
         );
@@ -103,7 +103,7 @@ protected function httpRequest($path, $method, $body = NULL, $mime_type = NULL)
           CURLOPT_HTTPGET => FALSE,
           CURLOPT_POST => TRUE,
           CURLOPT_POSTFIELDS => $body,
-          CURLOPT_URL => $this->container->get('url_generator')->generateFromPath($path, $options),
+          CURLOPT_URL => Url::fromUri('base://' . $path, $options)->toString(),
           CURLOPT_NOBODY => FALSE,
           CURLOPT_HTTPHEADER => array(
             'Content-Type: ' . $mime_type,
@@ -117,7 +117,7 @@ protected function httpRequest($path, $method, $body = NULL, $mime_type = NULL)
           CURLOPT_HTTPGET => FALSE,
           CURLOPT_CUSTOMREQUEST => 'PUT',
           CURLOPT_POSTFIELDS => $body,
-          CURLOPT_URL => $this->container->get('url_generator')->generateFromPath($path, $options),
+          CURLOPT_URL => Url::fromUri('base://' . $path, $options)->toString(),
           CURLOPT_NOBODY => FALSE,
           CURLOPT_HTTPHEADER => array(
             'Content-Type: ' . $mime_type,
@@ -131,7 +131,7 @@ protected function httpRequest($path, $method, $body = NULL, $mime_type = NULL)
           CURLOPT_HTTPGET => FALSE,
           CURLOPT_CUSTOMREQUEST => 'PATCH',
           CURLOPT_POSTFIELDS => $body,
-          CURLOPT_URL => $this->container->get('url_generator')->generateFromPath($path, $options),
+          CURLOPT_URL => Url::fromUri('base://' . $path, $options)->toString(),
           CURLOPT_NOBODY => FALSE,
           CURLOPT_HTTPHEADER => array(
             'Content-Type: ' . $mime_type,
@@ -144,7 +144,7 @@ protected function httpRequest($path, $method, $body = NULL, $mime_type = NULL)
         $curl_options = array(
           CURLOPT_HTTPGET => FALSE,
           CURLOPT_CUSTOMREQUEST => 'DELETE',
-          CURLOPT_URL => $this->container->get('url_generator')->generateFromPath($path, $options),
+          CURLOPT_URL => Url::fromUri('base://' . $path, $options)->toString(),
           CURLOPT_NOBODY => FALSE,
           CURLOPT_HTTPHEADER => array('X-CSRF-Token: ' . $token),
         );
diff --git a/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php b/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php
index 807e177..1674dd0 100644
--- a/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php
+++ b/core/modules/search/src/Tests/SearchConfigSettingsFormTest.php
@@ -21,7 +21,7 @@ class SearchConfigSettingsFormTest extends SearchTestBase {
    *
    * @var array
    */
-  public static $modules = array('block', 'search_extra_type');
+  public static $modules = array('block', 'search_extra_type', 'test_page_test');
 
   /**
    * User who can search and administer search.
diff --git a/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php b/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php
index 789687f..2b023a9 100644
--- a/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php
+++ b/core/modules/search/src/Tests/SearchKeywordsConditionsTest.php
@@ -23,7 +23,7 @@ class SearchKeywordsConditionsTest extends SearchTestBase {
    *
    * @var array
    */
-  public static $modules = array('comment', 'search_extra_type');
+  public static $modules = array('comment', 'search_extra_type', 'test_page_test');
 
   protected function setUp() {
     parent::setUp();
diff --git a/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml b/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml
index d87bc3d..caea321 100644
--- a/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml
+++ b/core/modules/search/tests/modules/search_extra_type/search_extra_type.info.yml
@@ -4,5 +4,3 @@ description: 'Support module for Search module testing.'
 package: Testing
 version: VERSION
 core: 8.x
-dependencies:
-  - views
\ No newline at end of file
diff --git a/core/modules/search/tests/modules/search_extra_type/src/Plugin/Search/SearchExtraTypeSearch.php b/core/modules/search/tests/modules/search_extra_type/src/Plugin/Search/SearchExtraTypeSearch.php
index 633a870..fc358d0 100644
--- a/core/modules/search/tests/modules/search_extra_type/src/Plugin/Search/SearchExtraTypeSearch.php
+++ b/core/modules/search/tests/modules/search_extra_type/src/Plugin/Search/SearchExtraTypeSearch.php
@@ -10,6 +10,7 @@
 use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Routing\UrlGeneratorTrait;
+use Drupal\Core\Url;
 use Drupal\search\Plugin\ConfigurableSearchPluginBase;
 
 /**
@@ -60,7 +61,7 @@ public function execute() {
     }
     return array(
       array(
-        'link' => $this->url('view.frontpage.page_1'),
+        'link' => Url::fromRoute('test_page_test.test_page')->toString(),
         'type' => 'Dummy result type',
         'title' => 'Dummy title',
         'snippet' => SafeMarkup::set("Dummy search snippet to display. Keywords: {$this->keywords}\n\nConditions: " . print_r($this->searchParameters, TRUE)),
diff --git a/core/modules/serialization/src/Tests/EntityResolverTest.php b/core/modules/serialization/src/Tests/EntityResolverTest.php
index 92242fd..e87b69b 100644
--- a/core/modules/serialization/src/Tests/EntityResolverTest.php
+++ b/core/modules/serialization/src/Tests/EntityResolverTest.php
@@ -32,6 +32,9 @@ class EntityResolverTest extends NormalizerTestBase {
   protected function setUp() {
     parent::setUp();
 
+    $this->installSchema('system', 'router');
+    \Drupal::service('router.builder')->rebuild();
+
     // Create the test field storage.
     entity_create('field_storage_config', array(
       'entity_type' => 'entity_test_mulrev',
@@ -69,7 +72,7 @@ function testUuidEntityResolver() {
         ),
         $field_uri => array(
           array(
-            'href' => Url::fromUri('base://entity/entity_test_mulrev/' . $entity->id())->toString(),
+            'href' => $entity->url(),
           ),
         ),
       ),
@@ -77,7 +80,7 @@ function testUuidEntityResolver() {
         $field_uri => array(
           array(
             '_links' => array(
-              'self' => Url::fromUri('base://entity/entity_test_mulrev/' . $entity->id())->toString(),
+              'self' => $entity->url(),
             ),
             'uuid' => array(
               array(
diff --git a/core/modules/system/src/Tests/Menu/BreadcrumbTest.php b/core/modules/system/src/Tests/Menu/BreadcrumbTest.php
index 7aa353f..910e809 100644
--- a/core/modules/system/src/Tests/Menu/BreadcrumbTest.php
+++ b/core/modules/system/src/Tests/Menu/BreadcrumbTest.php
@@ -9,6 +9,7 @@
 
 use Drupal\Component\Utility\String;
 use Drupal\Component\Utility\Unicode;
+use Drupal\Core\Url;
 use Drupal\node\Entity\NodeType;
 
 /**
@@ -23,13 +24,23 @@ class BreadcrumbTest extends MenuTestBase {
    *
    * @var array
    */
-  public static $modules = array('menu_test', 'block');
+  public static $modules = ['menu_test', 'block', 'node'];
 
   /**
    * Test paths in the Standard profile.
    */
   protected $profile = 'standard';
 
+  /**
+   * @var \Drupal\user\UserInterface
+   */
+  protected $admin_user;
+
+  /**
+   * @var \Drupal\user\UserInterface
+   */
+  protected $web_user;
+
   protected function setUp() {
     parent::setUp();
 
@@ -51,105 +62,132 @@ protected function setUp() {
    */
   function testBreadCrumbs() {
     // Prepare common base breadcrumb elements.
-    $home = array('' => 'Home');
-    $admin = $home + array('admin' => t('Administration'));
-    $config = $admin + array('admin/config' => t('Configuration'));
+    $home = [['url' => Url::fromRoute('<front>'), 'title' => 'Home']];
+    $admin = $home + [1 => [
+      'url' => Url::fromRoute('system.admin'),
+      'title' => t('Administration'),
+      ]];
+    $config = $admin + [2 => [
+      'url' => Url::fromRoute('system.admin_config'),
+      'title' => t('Configuration'),
+      ]];
     $type = 'article';
 
     // Verify Taxonomy administration breadcrumbs.
-    $trail = $admin + array(
-      'admin/structure' => t('Structure'),
-    );
-    $this->assertBreadcrumb('admin/structure/taxonomy', $trail);
-
-    $trail += array(
-      'admin/structure/taxonomy' => t('Taxonomy'),
-    );
-    $this->assertBreadcrumb('admin/structure/taxonomy/manage/tags', $trail);
-    $trail += array(
-      'admin/structure/taxonomy/manage/tags' => t('Tags'),
-    );
-    $this->assertBreadcrumb('admin/structure/taxonomy/manage/tags/overview', $trail);
-    $this->assertBreadcrumb('admin/structure/taxonomy/manage/tags/add', $trail);
+    $trail = $admin + [2 => [
+      'url' => Url::fromRoute('system.admin_structure'),
+      'title' => t('Structure'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('taxonomy.vocabulary_list'), $trail);
+
+    $trail += [3 => [
+      'url' => Url::fromRoute('taxonomy.vocabulary_list'),
+      'title' => t('Taxonomy'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('entity.taxonomy_vocabulary.edit_form', ['taxonomy_vocabulary' => 'tags']), $trail);
+    $trail += [4 => [
+      'url' => Url::fromRoute('entity.taxonomy_vocabulary.edit_form', ['taxonomy_vocabulary' => 'tags']),
+      'title' => t('Tags'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('entity.taxonomy_vocabulary.overview_form', ['taxonomy_vocabulary' => 'tags']), $trail);
+    $this->assertBreadcrumb(Url::fromRoute('entity.taxonomy_term.add_form', ['taxonomy_vocabulary' => 'tags']), $trail);
 
     // Verify Menu administration breadcrumbs.
-    $trail = $admin + array(
-      'admin/structure' => t('Structure'),
-    );
-    $this->assertBreadcrumb('admin/structure/menu', $trail);
-
-    $trail += array(
-      'admin/structure/menu' => t('Menus'),
-    );
-    $this->assertBreadcrumb('admin/structure/menu/manage/tools', $trail);
-
-    $trail += array(
-      'admin/structure/menu/manage/tools' => t('Tools'),
-    );
-    $this->assertBreadcrumb("admin/structure/menu/link/node.add_page/edit", $trail);
-    $this->assertBreadcrumb('admin/structure/menu/manage/tools/add', $trail);
+    $trail = $admin + [2 => [
+      'url' => Url::fromRoute('system.admin_structure'),
+      'title' => t('Structure'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('menu_ui.overview_page'), $trail);
+
+    $trail += [3 => [
+      'url' => Url::fromRoute('menu_ui.overview_page'),
+      'title' => t('Menus'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('entity.menu.edit_form', ['menu' => 'tools']), $trail);
+
+    $trail += [4 => [
+      'url' => Url::fromRoute('entity.menu.edit_form', ['menu' => 'tools']),
+      'title' => t('Tools'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('menu_ui.link_edit', ['menu_link_plugin' => 'node.add_page']), $trail);
+    $this->assertBreadcrumb(Url::fromRoute('entity.menu.add_link_form', ['menu' => 'tools']), $trail);
 
     // Verify Node administration breadcrumbs.
-    $trail = $admin + array(
-      'admin/structure' => t('Structure'),
-      'admin/structure/types' => t('Content types'),
-    );
-    $this->assertBreadcrumb('admin/structure/types/add', $trail);
-    $this->assertBreadcrumb("admin/structure/types/manage/$type", $trail);
-    $trail += array(
-      "admin/structure/types/manage/$type" => t('Article'),
-    );
-    $this->assertBreadcrumb("admin/structure/types/manage/$type/fields", $trail);
-    $this->assertBreadcrumb("admin/structure/types/manage/$type/display", $trail);
-    $trail_teaser = $trail + array(
-      "admin/structure/types/manage/$type/display" => t('Manage display'),
-    );
-    $this->assertBreadcrumb("admin/structure/types/manage/$type/display/teaser", $trail_teaser);
-    $this->assertBreadcrumb("admin/structure/types/manage/$type/delete", $trail);
-    $trail += array(
-      "admin/structure/types/manage/$type/fields" => t('Manage fields'),
-    );
-    $this->assertBreadcrumb("admin/structure/types/manage/$type/fields/node.$type.body", $trail);
+    $trail = $admin + [2 =>
+      [
+        'url' => Url::fromRoute('system.admin_structure'),
+        'title' => t('Structure'),
+      ],
+      3 => [
+        'url' => Url::fromRoute('node.overview_types'),
+        'title' => t('Content types'),
+      ],
+    ];
+    $this->assertBreadcrumb(Url::fromRoute('node.type_add'), $trail);
+    $this->assertBreadcrumb(Url::fromRoute('entity.node_type.edit_form', ['node_type' => $type]), $trail);
+    $trail += [4 => [
+      'url' => Url::fromRoute('entity.node_type.edit_form', ['node_type' => $type]),
+      'title' => t('Article'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('field_ui.overview_node'), $trail);
+    $this->assertBreadcrumb(Url::fromRoute('field_ui.display_overview_node'), $trail);
+    $trail_teaser = $trail + [5 => [
+      'url' => Url::fromRoute('field_ui.display_overview_node'),
+      'title' => t('Manage display'),
+    ]];
+
+
+    $this->assertBreadcrumb(Url::fromRoute('field_ui.display_overview_view_mode_node', ['view_mode' => 'teaser']), $trail_teaser);
+    $this->assertBreadcrumb(Url::fromRoute('entity.node_type.delete_form', ['node_type' => $type]), $trail);
+    $trail += [6 => [
+      'url' => Url::fromRoute('field_ui.overview_node'),
+      'title' => t('Manage fields'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('field_ui.field_edit_node', ['field_config' => "node.$type.body"]), $trail);
 
     // Verify Filter text format administration breadcrumbs.
     $filter_formats = filter_formats();
     $format = reset($filter_formats);
     $format_id = $format->id();
-    $trail = $config + array(
-      'admin/config/content' => t('Content authoring'),
-    );
-    $this->assertBreadcrumb('admin/config/content/formats', $trail);
-
-    $trail += array(
-      'admin/config/content/formats' => t('Text formats and editors'),
-    );
-    $this->assertBreadcrumb('admin/config/content/formats/add', $trail);
-    $this->assertBreadcrumb("admin/config/content/formats/manage/$format_id", $trail);
+    $trail = $config + [3 => [
+      'url' => Url::fromRoute('system.admin_config_content'),
+      'title' => t('Content authoring'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('filter.admin_overview'), $trail);
+
+    $trail += [4 => [
+      'url' => Url::fromRoute('filter.admin_overview'),
+      'title' => t('Text formats and editors'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('filter.format_add'), $trail);
+    $this->assertBreadcrumb(Url::fromRoute('entity.filter_format.edit_form', ['filter_format' => $format_id]), $trail);
     // @todo Remove this part once we have a _title_callback, see
     //   https://drupal.org/node/2076085.
-    $trail += array(
-      "admin/config/content/formats/manage/$format_id" => $format->label(),
-    );
-    $this->assertBreadcrumb("admin/config/content/formats/manage/$format_id/disable", $trail);
+    $trail += [5 => [
+      'url' => Url::fromRoute('entity.filter_format.edit_form', ['filter_format' => $format_id]),
+      'title' => $format->label(),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('entity.filter_format.disable', ['filter_format' => $format_id]), $trail);
 
     // Verify node breadcrumbs (without menu link).
     $node1 = $this->drupalCreateNode();
     $nid1 = $node1->id();
     $trail = $home;
-    $this->assertBreadcrumb("node/$nid1", $trail);
+    $this->assertBreadcrumb($node1->urlInfo(), $trail);
     // Also verify that the node does not appear elsewhere (e.g., menu trees).
     $this->assertNoLink($node1->getTitle());
     // Also verify that the node does not appear elsewhere (e.g., menu trees).
     $this->assertNoLink($node1->getTitle());
 
-    $trail += array(
-      "node/$nid1" => $node1->getTitle(),
-    );
-    $this->assertBreadcrumb("node/$nid1/edit", $trail);
+    $trail += [1 => [
+      'url' => $node1->urlInfo(),
+      'title' => $node1->getTitle(),
+    ]];
+    $this->assertBreadcrumb($node1->urlInfo('edit-form'), $trail);
 
     // Verify that breadcrumb on node listing page contains "Home" only.
     $trail = array();
-    $this->assertBreadcrumb('node', $trail);
+    $this->assertBreadcrumb(Url::fromRoute('view.frontpage.page_1'), $trail);
 
     // Verify node breadcrumbs (in menu).
     // Do this separately for Main menu and Tools menu, since only the
@@ -197,17 +235,20 @@ function testBreadCrumbs() {
     $edit = array(
       'menu[menu_parent]' => $link->getMenuName() . ':' . $link->getPluginId(),
     );
-    $this->drupalPostForm('node/' . $parent->id() . '/edit', $edit, t('Save and keep published'));
-    $expected = array(
-      "node" => $link->getTitle(),
-    );
+    $this->drupalPostForm($parent->url('edit-form'), $edit, t('Save and keep published'));
+    $expected = [1 => [
+      'url' => Url::fromRoute('view.frontpage.page_1'),
+      'title' => $link->getTitle(),
+    ]];
     $trail = $home + $expected;
-    $tree = $expected + array(
-      'node/' . $parent->id() => $parent->menu['title'],
-    );
-    $trail += array(
-      'node/' . $parent->id() => $parent->menu['title'],
-    );
+    $tree = $expected + [2 => [
+      'url' => $parent->urlInfo(),
+      'title' => $parent->menu['title'],
+    ]];
+    $trail += [2 => [
+      'url' => $parent->urlInfo(),
+      'title' => $parent->menu['title'],
+    ]];
 
     // Add a taxonomy term/tag to last node, and add a link for that term to the
     // Tools menu.
@@ -261,6 +302,7 @@ function testBreadCrumbs() {
     // Logout the user because we want to check the active class as well, which
     // is just rendered as anonymous user.
     $this->drupalLogout();
+    $i = 0;
     foreach ($tags as $name => $data) {
       $term = $data['term'];
       /** @var \Drupal\menu_link_content\MenuLinkContentInterface $link */
@@ -268,10 +310,12 @@ function testBreadCrumbs() {
 
       $url = $link->getUrlObject();
       $link_path = $url->getInternalPath();
-      $tree += array(
-        $link_path => $link->getTitle(),
-      );
-      $this->assertBreadcrumb($link_path, $trail, $term->getName(), $tree);
+      $tree += [$i++ => [
+        'url' => $url,
+        'title' => $link->getTitle(),
+      ]];
+      debug(array_keys($tree));
+      $this->assertBreadcrumb($url, $trail, $term->getName(), $tree);
       $this->assertEscaped($parent->getTitle(), 'Tagged node found.');
 
       // Additionally make sure that this link appears only once; i.e., the
@@ -286,9 +330,10 @@ function testBreadCrumbs() {
 
       // Next iteration should expect this tag as parent link.
       // Note: Term name, not link name, due to taxonomy_term_page().
-      $trail += array(
-        $link_path => $term->getName(),
-      );
+      $trail += [$i => [
+        'url' => $url,
+        'title' => $term->getName(),
+      ]];
     }
 
     // Verify breadcrumbs on user and user/%.
@@ -299,22 +344,23 @@ function testBreadCrumbs() {
     ));
 
     // Verify breadcrumb on front page.
-    $this->assertBreadcrumb('<front>', array());
+    $this->assertBreadcrumb(Url::fromRoute('<front>'), array());
 
     // Verify breadcrumb on user pages (without menu link) for anonymous user.
     $trail = $home;
-    $this->assertBreadcrumb('user', $trail, t('Log in'));
-    $this->assertBreadcrumb('user/' . $this->admin_user->id(), $trail, $this->admin_user->getUsername());
+    $this->assertBreadcrumb(Url::fromRoute('user.page'), $trail, t('Log in'));
+    $this->assertBreadcrumb($this->admin_user->urlInfo(), $trail, $this->admin_user->getUsername());
 
     // Verify breadcrumb on user pages (without menu link) for registered users.
     $this->drupalLogin($this->admin_user);
     $trail = $home;
-    $this->assertBreadcrumb('user', $trail, $this->admin_user->getUsername());
-    $this->assertBreadcrumb('user/' . $this->admin_user->id(), $trail, $this->admin_user->getUsername());
-    $trail += array(
-      'user/' . $this->admin_user->id() => $this->admin_user->getUsername(),
-    );
-    $this->assertBreadcrumb('user/' . $this->admin_user->id() . '/edit', $trail, $this->admin_user->getUsername());
+    $this->assertBreadcrumb(Url::fromRoute('user.page'), $trail, $this->admin_user->getUsername());
+    $this->assertBreadcrumb($this->admin_user->urlInfo(), $trail, $this->admin_user->getUsername());
+    $trail += [1 => [
+      'url' => $this->admin_user->urlInfo(),
+      'title' => $this->admin_user->getUserName(),
+    ]];
+    $this->assertBreadcrumb($this->admin_user->urlInfo('edit-form'), $trail, $this->admin_user->getUsername());
 
     // Create a second user to verify breadcrumb on user pages again.
     $this->web_user = $this->drupalCreateUser(array(
@@ -325,19 +371,21 @@ function testBreadCrumbs() {
 
     // Verify correct breadcrumb and page title on another user's account pages.
     $trail = $home;
-    $this->assertBreadcrumb('user/' . $this->admin_user->id(), $trail, $this->admin_user->getUsername());
-    $trail += array(
-      'user/' . $this->admin_user->id() => $this->admin_user->getUsername(),
-    );
-    $this->assertBreadcrumb('user/' . $this->admin_user->id() . '/edit', $trail, $this->admin_user->getUsername());
+    $this->assertBreadcrumb($this->admin_user->urlInfo(), $trail, $this->admin_user->getUsername());
+    $trail += [1 => [
+      'url' => $this->admin_user->urlInfo(),
+      'title' => $this->admin_user->getUsername(),
+    ]];
+    $this->assertBreadcrumb($this->admin_user->urlInfo('edit-form'), $trail, $this->admin_user->getUsername());
 
     // Verify correct breadcrumb and page title when viewing own user account.
     $trail = $home;
-    $this->assertBreadcrumb('user/' . $this->web_user->id(), $trail, $this->web_user->getUsername());
-    $trail += array(
-      'user/' . $this->web_user->id() => $this->web_user->getUsername(),
-    );
-    $this->assertBreadcrumb('user/' . $this->web_user->id() . '/edit', $trail, $this->web_user->getUsername());
+    $this->assertBreadcrumb($this->web_user->urlInfo(), $trail, $this->web_user->getUsername());
+    $trail += [1 => [
+      'url' => $this->web_user->urlInfo(),
+      'title' => $this->web_user->getUsername(),
+    ]];
+    $this->assertBreadcrumb($this->web_user->urlInfo('edit-form'), $trail, $this->web_user->getUsername());
 
     // Create an only slightly privileged user being able to access site reports
     // but not administration pages.
@@ -350,17 +398,20 @@ function testBreadCrumbs() {
     // page title, and that the breadcrumb is just the Home link (because the
     // user is not able to access "Administer".
     $trail = $home;
-    $this->assertBreadcrumb('admin', $trail, t('Access denied'));
+    $this->assertBreadcrumb(Url::fromRoute('system.admin'), $trail, t('Access denied'));
     $this->assertResponse(403);
 
     // Since the 'admin' path is not accessible, we still expect only the Home
     // link.
-    $this->assertBreadcrumb('admin/reports', $trail, t('Reports'));
+    $this->assertBreadcrumb(Url::fromRoute('system.admin_reports'), $trail, t('Reports'));
     $this->assertNoResponse(403);
 
     // Since the Reports page is accessible, that will show.
-    $trail += array('admin/reports' => t('Reports'));
-    $this->assertBreadcrumb('admin/reports/dblog', $trail, t('Recent log messages'));
+    $trail += [1 => [
+      'url' => Url::fromRoute('system.admin_reports'),
+      'title' => t('Reports'),
+    ]];
+    $this->assertBreadcrumb(Url::fromRoute('dblog.overview'), $trail, t('Recent log messages'));
     $this->assertNoResponse(403);
 
     // Ensure that the breadcrumb is safe against XSS.
diff --git a/core/modules/system/src/Tests/Menu/MenuTestBase.php b/core/modules/system/src/Tests/Menu/MenuTestBase.php
index 4cb9fda..89c3fe3 100644
--- a/core/modules/system/src/Tests/Menu/MenuTestBase.php
+++ b/core/modules/system/src/Tests/Menu/MenuTestBase.php
@@ -35,7 +35,7 @@
    */
   protected function assertBreadcrumb($goto, array $trail, $page_title = NULL, array $tree = array(), $last_active = TRUE) {
     if (isset($goto)) {
-      $this->drupalGet($goto);
+      $this->drupalGet((string) $goto);
     }
     $this->assertBreadcrumbParts($trail);
 
@@ -63,14 +63,12 @@ protected function assertBreadcrumbParts($trail) {
     $pass = TRUE;
     // There may be more than one breadcrumb on the page. If $trail is empty
     // this test would go into an infinite loop, so we need to check that too.
+    $expected_titles = [];
     while ($trail && !empty($parts)) {
-      foreach ($trail as $path => $title) {
-        if ($path == '') {
-          $url = Url::fromRoute('<front>')->toString();
-        }
-        else {
-          $url = Url::fromUri('base://' . $path)->toString();
-        }
+      foreach ($trail as $trail_parts) {
+        $title = $trail_parts['title'];
+        $expected_titles[] = $title;
+        $url = $trail_parts['url']->toString();
         $part = array_shift($parts);
         $pass = ($pass && $part['href'] === $url && $part['text'] === String::checkPlain($title));
       }
@@ -79,7 +77,7 @@ protected function assertBreadcrumbParts($trail) {
     $pass = ($pass && empty($parts));
 
     $this->assertTrue($pass, format_string('Breadcrumb %parts found on @path.', array(
-      '%parts' => implode(' » ', $trail),
+      '%parts' => implode(' » ', $expected_titles),
       '@path' => $this->getUrl(),
     )));
   }
@@ -97,19 +95,21 @@ protected function assertBreadcrumbParts($trail) {
    */
   protected function assertMenuActiveTrail($tree, $last_active) {
     end($tree);
-    $active_link_path = key($tree);
-    $active_link_title = array_pop($tree);
+    $active_link_url = current($tree)['url']->toString();
+    $active_link_title = current($tree)['title'];
     $xpath = '';
+    $expected_titles = [];
     if ($tree) {
       $i = 0;
-      foreach ($tree as $link_path => $link_title) {
+      foreach ($tree as $tree_element) {
         $part_xpath = (!$i ? '//' : '/following-sibling::ul/descendant::');
         $part_xpath .= 'li[contains(@class, :class)]/a[contains(@href, :href) and contains(text(), :title)]';
         $part_args = array(
           ':class' => 'active-trail',
-          ':href' => Url::fromUri('base://' . $link_path)->toString(),
-          ':title' => $link_title,
+          ':href' => $tree_element['url']->toString(),
+          ':title' => $tree_element['title'],
         );
+        $expected_titles[] = $tree_element['title'];
         $xpath .= $this->buildXPathQuery($part_xpath, $part_args);
         $i++;
       }
@@ -127,13 +127,15 @@ protected function assertMenuActiveTrail($tree, $last_active) {
     $args = array(
       ':class-trail' => 'active-trail',
       ':class-active' => 'active',
-      ':href' => Url::fromUri('base://' . $active_link_path)->toString(),
+      ':href' => $active_link_url,
       ':title' => $active_link_title,
     );
+    debug($xpath);
+    debug($args);
     $elements = $this->xpath($xpath, $args);
     $this->assertTrue(!empty($elements), format_string('Active link %title was found in menu tree, including active trail links %tree.', array(
       '%title' => $active_link_title,
-      '%tree' => implode(' » ', $tree),
+      '%tree' => implode(' » ', $expected_titles),
     )));
   }
 
diff --git a/core/modules/system/tests/modules/entity_test/entity_test.routing.yml b/core/modules/system/tests/modules/entity_test/entity_test.routing.yml
index 8d1283b..888262d 100644
--- a/core/modules/system/tests/modules/entity_test/entity_test.routing.yml
+++ b/core/modules/system/tests/modules/entity_test/entity_test.routing.yml
@@ -20,6 +20,14 @@ entity.entity_test_mul.delete_form:
   requirements:
     _access: 'TRUE'
 
+entity.entity_test_mulrev.canonical:
+  path: '/entity/{entity_test_mulrev}'
+  defaults:
+    _entity_view: 'entity_test_mulrev.full'
+    _title: 'Test full view mode'
+  requirements:
+    _access: 'TRUE'
+
 entity.entity_test_mulrev.delete_form:
   path: '/entity_test/delete/entity_test_mulrev/{entity_test_mulrev}'
   defaults:
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php
index b5fc86f..027df27 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTestMulRev.php
@@ -38,7 +38,7 @@
  *     "bundle" = "type"
  *   },
  *   links = {
- *     "canonical" = "entity.entity_test_mulrev.edit_form",
+ *     "canonical" = "entity.entity_test_mulrev.canonical",
  *     "delete-form" = "entity.entity_test_mulrev.delete_form",
  *     "edit-form" = "entity.entity_test_mulrev.edit_form"
  *   }
diff --git a/core/modules/views/src/Tests/Plugin/ExposedFormTest.php b/core/modules/views/src/Tests/Plugin/ExposedFormTest.php
index 0de8695..06e5351 100644
--- a/core/modules/views/src/Tests/Plugin/ExposedFormTest.php
+++ b/core/modules/views/src/Tests/Plugin/ExposedFormTest.php
@@ -131,7 +131,8 @@ public function testExposedFormRender() {
 
     $this->assertFieldByXpath('//form/@id', $this->getExpectedExposedFormId($view), 'Expected form ID found.');
 
-    $expected_action = Url::fromUri('base://' . $view->display_handler->getUrl())->toString();
+    $view->setDisplay('page_1');
+    $expected_action = $view->display_handler->getUrlInfo()->toString();
     $this->assertFieldByXPath('//form/@action', $expected_action, 'The expected value for the action attribute was found.');
   }
 
diff --git a/core/modules/views/src/Tests/Wizard/BasicTest.php b/core/modules/views/src/Tests/Wizard/BasicTest.php
index 173deb6..7011233 100644
--- a/core/modules/views/src/Tests/Wizard/BasicTest.php
+++ b/core/modules/views/src/Tests/Wizard/BasicTest.php
@@ -75,8 +75,8 @@ function testViewsWizardAndListing() {
     $this->assertText($node2->label());
 
     // Check if we have the feed.
-    $this->assertLinkByHref(Url::fromUri('base://' . $view2['page[feed_properties][path]']));
-    $elements = $this->cssSelect('link[href="' . Url::fromUri('base://' . $view2['page[feed_properties][path]'], ['absolute' => TRUE])->toString() . '"]');
+    $this->assertLinkByHref(Url::fromRoute('view.' . $view2['id'] . '.feed_1')->toString());
+    $elements = $this->cssSelect('link[href="' . Url::fromRoute('view.' . $view2['id'] . '.feed_1', [], ['absolute' => TRUE])->toString() . '"]');
     $this->assertEqual(count($elements), 1, 'Feed found.');
     $this->drupalGet($view2['page[feed_properties][path]']);
     $this->assertRaw('<rss version="2.0"');
@@ -91,7 +91,7 @@ function testViewsWizardAndListing() {
     $this->drupalGet('admin/structure/views');
     $this->assertText($view2['label']);
     $this->assertText($view2['description']);
-    $this->assertLinkByHref(Url::fromUri('base://' . $view2['page[path]'])->toString());
+    $this->assertLinkByHref(Url::fromRoute('view.' . $view2['id'] . '.page_1')->toString());
 
     // The view should not have a REST export display.
     $this->assertNoText('REST export', 'If only the page option was enabled in the wizard, the resulting view does not have a REST export display.');
@@ -126,7 +126,7 @@ function testViewsWizardAndListing() {
     $this->drupalGet('admin/structure/views');
     $this->assertText($view3['label']);
     $this->assertText($view3['description']);
-    $this->assertLinkByHref(Url::fromUri('base://' . $view3['page[path]'])->toString());
+    $this->assertLinkByHref(Url::fromRoute('view.' . $view3['id'] . '.page_1')->toString());
 
     // The view should not have a REST export display.
     $this->assertNoText('REST export', 'If only the page and block options were enabled in the wizard, the resulting view does not have a REST export display.');