.../tests/src/Functional/NodeTranslationUITest.php |  6 ++-
 .../Functional/PageCacheTagsIntegrationTest.php    |  3 ++
 .../src/Tests/Installer/StandardInstallerTest.php  |  7 +--
 core/profiles/standard/standard.info.yml           |  1 +
 .../StandardJavascriptTest.php                     | 62 ++++++++++++++++++++++
 5 files changed, 72 insertions(+), 7 deletions(-)

diff --git a/core/modules/node/tests/src/Functional/NodeTranslationUITest.php b/core/modules/node/tests/src/Functional/NodeTranslationUITest.php
index a44bea1..fa0ad13 100644
--- a/core/modules/node/tests/src/Functional/NodeTranslationUITest.php
+++ b/core/modules/node/tests/src/Functional/NodeTranslationUITest.php
@@ -21,13 +21,15 @@ class NodeTranslationUITest extends ContentTranslationUITestBase {
    */
   protected $defaultCacheContexts = [
     'languages:language_interface',
-    'session',
     'theme',
     'route',
     'timezone',
     'url.path.parent',
     'url.query_args:_wrapper_format',
-    'user'
+    'user.roles',
+    // These two cache contexts are added by BigPipe.
+    'cookies:big_pipe_nojs',
+    'session.exists',
   ];
 
   /**
diff --git a/core/modules/page_cache/tests/src/Functional/PageCacheTagsIntegrationTest.php b/core/modules/page_cache/tests/src/Functional/PageCacheTagsIntegrationTest.php
index 5f84a34..48861f9 100644
--- a/core/modules/page_cache/tests/src/Functional/PageCacheTagsIntegrationTest.php
+++ b/core/modules/page_cache/tests/src/Functional/PageCacheTagsIntegrationTest.php
@@ -76,6 +76,9 @@ public function testPageCacheTags() {
       // condition.
       'url.path',
       'url.query_args:' . MainContentViewSubscriber::WRAPPER_FORMAT,
+      // These two cache contexts are added by BigPipe.
+      'cookies:big_pipe_nojs',
+      'session.exists',
     ];
 
     // Full node page 1.
diff --git a/core/modules/system/src/Tests/Installer/StandardInstallerTest.php b/core/modules/system/src/Tests/Installer/StandardInstallerTest.php
index b0ceef9..3132be2 100644
--- a/core/modules/system/src/Tests/Installer/StandardInstallerTest.php
+++ b/core/modules/system/src/Tests/Installer/StandardInstallerTest.php
@@ -18,11 +18,8 @@ class StandardInstallerTest extends ConfigAfterInstallerTestBase {
    * Ensures that the user page is available after installation.
    */
   public function testInstaller() {
-    // Verify that the confirmation message appears.
-    require_once \Drupal::root() . '/core/includes/install.inc';
-    $this->assertRaw(t('Congratulations, you installed @drupal!', [
-      '@drupal' => drupal_install_profile_distribution_name(),
-    ]));
+    // Verify that the Standard install profile's default frontpage appears.
+    $this->assertRaw('No front page content has been created yet.');
   }
 
   /**
diff --git a/core/profiles/standard/standard.info.yml b/core/profiles/standard/standard.info.yml
index 82af32e..7fbaec6 100644
--- a/core/profiles/standard/standard.info.yml
+++ b/core/profiles/standard/standard.info.yml
@@ -26,6 +26,7 @@ dependencies:
   - path
   - page_cache
   - dynamic_page_cache
+  - big_pipe
   - taxonomy
   - dblog
   - search
diff --git a/core/profiles/standard/tests/src/FunctionalJavascript/StandardJavascriptTest.php b/core/profiles/standard/tests/src/FunctionalJavascript/StandardJavascriptTest.php
new file mode 100644
index 0000000..8dfed02
--- /dev/null
+++ b/core/profiles/standard/tests/src/FunctionalJavascript/StandardJavascriptTest.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Drupal\Tests\standard\Functional;
+
+use Drupal\FunctionalJavascriptTests\JavascriptTestBase;
+use Drupal\node\Entity\Node;
+
+/**
+ * Tests Standard installation profile JavaScript expectations.
+ *
+ * @group standard
+ */
+class StandardJavascriptTest extends JavascriptTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $profile = 'standard';
+
+  /**
+   * Tests BigPipe accelerates particular Standard installation profile routes.
+   */
+  public function testBigPipe() {
+    $this->drupalLogin($this->drupalCreateUser([
+      'access content',
+      'post comments',
+      'skip comment approval',
+    ]));
+
+    $node = Node::create(['type' => 'article'])
+      ->setTitle($this->randomMachineName())
+      ->setPromoted(TRUE)
+      ->setPublished(TRUE);
+    $node->save();
+
+    // Front page: one placeholder, for messages.
+    $this->drupalGet('');
+    $this->assertBigPipePlaceholderReplacementCount(1);
+
+    // Node page: 3 placeholders:
+    // 1. messages
+    // 2. local tasks block
+    // 3. comment form
+    $this->drupalGet($node->toUrl());
+    $this->assertBigPipePlaceholderReplacementCount(3);
+  }
+
+  /**
+   * Asserts the number of BigPipe placeholders that are replaced on the page.
+   *
+   * @param int $expected_count
+   *   The expected number of BigPipe placeholders.
+   */
+  protected function assertBigPipePlaceholderReplacementCount($expected_count) {
+    $web_assert = $this->assertSession();
+    $web_assert->waitForElement('css', 'script[data-big-pipe-event="stop"]');
+    $page = $this->getSession()->getPage();
+    $this->assertCount($expected_count, $this->getDrupalSettings()['bigPipePlaceholderIds']);
+    $this->assertCount($expected_count, $page->findAll('css', 'script[data-big-pipe-replacement-for-placeholder-with-id]'));
+  }
+
+}