core/tests/Drupal/Tests/Core/UnroutedUrlTest.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php b/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php
index 80b85fc..777b79b 100644
--- a/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php
+++ b/core/tests/Drupal/Tests/Core/UnroutedUrlTest.php
@@ -84,7 +84,7 @@ public function providerFromUri() {
       // A protocol-relative URL.
       ['//www.drupal.org', TRUE],
       // A root-relative URL.
-      ['/robots.txt', FALSE],
+      ['/robots.txt', FALSE, 'base:robots.txt'],
       // An internal, unrouted, base-relative URI.
       ['base:robots.txt', FALSE],
       // Base-relative URIs with special characters.
@@ -167,9 +167,9 @@ public function testIsExternal($uri, $is_external) {
    *
    * @covers ::toString
    */
-  public function testToString($uri) {
+  public function testToString($uri, $is_external, $expected_uri) {
     $url = Url::fromUri($uri);
-    $this->assertSame($uri, $url->toString());
+    $this->assertSame(isset($expected_uri) ? $expected_uri : $uri, $url->toString());
   }
 
   /**