diff --git a/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php b/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php
index 06653f6..c221617 100644
--- a/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php
+++ b/core/tests/Drupal/Tests/Core/Database/UrlConversionTest.php
@@ -34,21 +34,21 @@ public function testDbUrltoConnectionConversion($root, $url, $database_array) {
   public function providerConvertDbUrlToConnectionInfo() {
     // Some valid datasets.
     $root1 = '';
-    $url1 = 'mysql://test_user:test_pass@test_host:3306/test_database';
+    $url1 = 'mysql://testuser:testpass@test_host:3306/test_database';
     $database_array1 = [
       'driver' => 'mysql',
-      'username' => 'test_user',
-      'password' => 'test_pass',
+      'username' => 'testuser',
+      'password' => 'testpass',
       'host' => 'test_host',
       'database' => 'test_database',
       'port' => '3306',
     ];
     $root2 = '/var/www/d8';
-    $url2 = 'sqlite://test_user:test_pass@test_host:3306/test_database';
+    $url2 = 'sqlite://testuser:testpass@test_host:3306/test_database';
     $database_array2 = [
       'driver' => 'sqlite',
-      'username' => 'test_user',
-      'password' => 'test_pass',
+      'username' => 'testuser',
+      'password' => 'testpass',
       'host' => 'test_host',
       'database' => $root2 . '/test_database',
       'port' => 3306,
@@ -117,26 +117,26 @@ public function testGetConnectionInfoAsUrl(Array $info, $expected_url) {
   public function providerGetConnectionInfoAsUrl() {
     $info1 = [
       'database' => 'test_database',
-      'username' => 'test_user',
-      'password' => 'test_pass',
+      'username' => 'testuser',
+      'password' => 'testpass',
       'prefix' => '',
       'host' => 'test_host',
       'port' => '3306',
       'namespace' => 'Drupal\\Core\\Database\\Driver\\mysql',
       'driver' => 'mysql',
     ];
-    $expected_url1 = 'mysql://test_user:test_pass@test_host:3306/test_database';
+    $expected_url1 = 'mysql://testuser:testpass@test_host:3306/test_database';
 
     $info2 = [
       'database' => 'test_database',
-      'username' => 'test_user',
-      'password' => 'test_pass',
+      'username' => 'testuser',
+      'password' => 'testpass',
       'prefix' => 'pre',
       'host' => 'test_host',
       'port' => '3306',
       'driver' => 'mysql',
     ];
-    $expected_url2 = 'mysql://test_user:test_pass@test_host:3306/test_database#pre';
+    $expected_url2 = 'mysql://testuser:testpass@test_host:3306/test_database#pre';
 
     $info3 = [
       'database' => 'test_database',