only in patch2:
unchanged:
--- a/core/modules/simpletest/src/Tests/SimpleTestBrowserTest.php
+++ b/core/modules/simpletest/src/Tests/SimpleTestBrowserTest.php
@@ -33,7 +33,7 @@ public function testInternalBrowser() {
     // Retrieve the test page and check its title and headers.
     $this->drupalGet('test-page');
     $this->assertTrue($this->drupalGetHeader('Date'), 'An HTTP header was received.');
-    $this->assertTitle(t('Test page | @site-name', [
+    $this->assertSession()->titleEquals(t('Test page | @site-name', [
       '@site-name' => $this->config('system.site')->get('name'),
     ]));
     $this->assertNoTitle('Foo');
only in patch2:
unchanged:
--- a/core/modules/system/src/Tests/Menu/AssertBreadcrumbTrait.php
+++ b/core/modules/system/src/Tests/Menu/AssertBreadcrumbTrait.php
@@ -46,7 +46,7 @@ protected function assertBreadcrumb($goto, array $trail, $page_title = NULL, arr
 
     // Additionally assert page title, if given.
     if (isset($page_title)) {
-      $this->assertTitle(strtr('@title | Drupal', ['@title' => $page_title]));
+      $this->assertSession()->titleEquals(strtr('@title | Drupal', ['@title' => $page_title]));
     }
 
     // Additionally assert active trail in a menu tree output, if given.
only in patch2:
unchanged:
--- a/core/tests/Drupal/KernelTests/Core/Entity/RouteProviderTest.php
+++ b/core/tests/Drupal/KernelTests/Core/Entity/RouteProviderTest.php
@@ -84,13 +84,13 @@ public function testHtmlRoutes() {
     $entity->save();
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl()->toString()));
-    $this->assertTitle('Test title | ');
+    $this->assertSession()->titleEquals('Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('edit-form')->toString()));
-    $this->assertTitle('Edit Test title | ');
+    $this->assertSession()->titleEquals('Edit Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('delete-form')->toString()));
-    $this->assertTitle('Are you sure you want to delete the test entity - data table Test title? | ');
+    $this->assertSession()->titleEquals('Are you sure you want to delete the test entity - data table Test title? | ');
   }
 
   /**
@@ -127,13 +127,13 @@ public function testAdminHtmlRoutes() {
     $entity->save();
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl()->toString()));
-    $this->assertTitle('Test title | ');
+    $this->assertSession()->titleEquals('Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('edit-form')->toString()));
-    $this->assertTitle('Edit Test title | ');
+    $this->assertSession()->titleEquals('Edit Test title | ');
 
     $this->setRawContent($this->httpKernelHandle($entity->toUrl('delete-form')->toString()));
-    $this->assertTitle('Are you sure you want to delete the test entity - admin routes Test title? | ');
+    $this->assertSession()->titleEquals('Are you sure you want to delete the test entity - admin routes Test title? | ');
   }
 
 }