mondrake
--- a/core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php
+++ b/core/lib/Drupal/Core/Test/FunctionalTestSetupTrait.php
   */
  protected $apcuEnsureUniquePrefix = FALSE;

+  /**
+   * The test request time.
+   */
+  protected int $testRequestTime;
--- a/core/modules/block_content/tests/src/Functional/BlockContentRevisionsTest.php
+++ b/core/modules/block_content/tests/src/Functional/BlockContentRevisionsTest.php
      $block->setNewRevision(TRUE);
      $block->setRevisionLogMessage($this->randomMachineName(32));
      $block->setRevisionUser($this->adminUser);
-      $block->setRevisionCreationTime(REQUEST_TIME);
+      $block->setRevisionCreationTime($this->testRequestTime);
--- a/core/modules/block_content/tests/src/Functional/BlockContentSaveTest.php
+++ b/core/modules/block_content/tests/src/Functional/BlockContentSaveTest.php
  public function testDeterminingChanges() {
    // Initial creation.
    $block = $this->createBlockContent('test_changes');
-    $this->assertEquals(REQUEST_TIME, $block->getChangedTime(), 'Creating a block sets default "changed" timestamp.');
+    $this->assertEquals($this->testRequestTime, $block->getChangedTime(), 'Creating a block sets default "changed" timestamp.');
--- a/core/modules/comment/tests/src/Functional/Views/DefaultViewRecentCommentsTest.php
+++ b/core/modules/comment/tests/src/Functional/Views/DefaultViewRecentCommentsTest.php
      $comment->comment_body->format = 'full_html';

      // Ensure comments are sorted in ascending order.
-      $time = REQUEST_TIME + ($this->defaultDisplayResults - $i);
+      $time = $this->testRequestTime + ($this->defaultDisplayResults - $i);
--- a/core/modules/comment/tests/src/Functional/CommentBlockTest.php
+++ b/core/modules/comment/tests/src/Functional/CommentBlockTest.php
    // Add some test comments, with and without subjects. Because the 10 newest
    // comments should be shown by the block, we create 11 to test that behavior
    // below.
-    $timestamp = REQUEST_TIME;
+    $timestamp = $this->testRequestTime;