diff --git a/core/modules/file/tests/src/Kernel/FileUriItemTest.php b/core/modules/file/tests/src/Kernel/FileUriItemTest.php
index 1e87fab64a..d67eba0707 100644
--- a/core/modules/file/tests/src/Kernel/FileUriItemTest.php
+++ b/core/modules/file/tests/src/Kernel/FileUriItemTest.php
@@ -33,7 +33,7 @@ public function testCustomFileUriField() {
     $file->save();
 
     $this->assertSame($uri, $file->uri->value);
-    $expected_url = file_transform_relative(file_create_url($uri));
+    $expected_url = base_path() . $this->siteDirectory . '/files/druplicon.txt';
     $this->assertSame($expected_url, $file->uri->url);
   }
 
diff --git a/core/modules/file/tests/src/Unit/ComputedFileUrlTest.php b/core/modules/file/tests/src/Unit/ComputedFileUrlTest.php
index 459f154ba3..8e2a4a469e 100644
--- a/core/modules/file/tests/src/Unit/ComputedFileUrlTest.php
+++ b/core/modules/file/tests/src/Unit/ComputedFileUrlTest.php
@@ -39,7 +39,7 @@ public function testGetValue() {
 
     $typed_data = new ComputedFileUrl($definition->reveal(), $this->randomMachineName(), $parent->reveal());
 
-    $expected = file_transform_relative(file_create_url($this->testUrl));
+    $expected = base_path() . $this->siteDirectory . '/files/druplicon.txt';
 
     $this->assertSame($expected, $typed_data->getValue());
     // Do this a second time to confirm the same value is returned but the value
diff --git a/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php
index ac21d26e38..f345a64dfa 100644
--- a/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php
+++ b/core/modules/hal/tests/src/Functional/EntityResource/File/FileHalJsonAnonTest.php
@@ -143,7 +143,7 @@ public function testGetBcUriField() {
 
     // Explicitly assert that $file->uri->value is an absolute file URL, unlike
     // the default normalization.
-    $this->assertSame(file_create_url('public://drupal.txt'), $actual['uri'][0]['value']);
+    $this->assertSame($this->baseUrl . '/' . $this->siteDirectory . '/files/drupal.txt', $actual['uri'][0]['value']);
   }
 
   /**