diff --git a/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php b/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php
index a535137..2b92971 100644
--- a/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php
+++ b/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkExternalProtocolsConstraintValidatorTest.php
@@ -56,7 +56,7 @@ public function providerValidate() {
     $data[] = ['https://www.drupal.org', TRUE];
     $data[] = ['magnet:?xt=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C', TRUE];
 
-    // Not valid protocols.
+    // Invalid protocols.
     $data[] = ['ftp://ftp.funet.fi/pub/standards/RFC/rfc959.txt', FALSE];
 
     foreach ($data as &$single_data) {
@@ -73,8 +73,10 @@ public function providerValidate() {
 
   /**
    * @covers ::validate
+   *
+   * @see \Drupal\Core\Url::fromUri
    */
-  public function testValidateWithInvalidUrl() {
+  public function testValidateWithMalformedUri() {
     $link = $this->getMock('Drupal\link\LinkItemInterface');
     $link->expects($this->any())
       ->method('getUrl')
@@ -94,7 +96,7 @@ public function testValidateWithInvalidUrl() {
   /**
    * @covers ::validate
    */
-  public function testValidateForInternalUrl() {
+  public function testValidateIgnoresInternalUrls() {
     $link = $this->getMock('Drupal\link\LinkItemInterface');
     $link->expects($this->any())
       ->method('getUrl')
diff --git a/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php b/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php
index 7ee34aa..545437c 100644
--- a/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php
+++ b/core/modules/link/tests/src/Plugin/Validation/Constraint/LinkNotExistingInternalConstraintValidatorTest.php
@@ -64,6 +64,7 @@ public function providerValidate() {
     $url->setUrlGenerator($url_generator);
 
     $data[] = [$url, TRUE];
+
     // Not existing routed URL.
     $url = Url::fromRoute('example.not_existing_route');
 
@@ -85,14 +86,15 @@ public function providerValidate() {
       $single_data[0] = $link;
     }
 
-
     return $data;
   }
 
   /**
    * @covers ::validate
+   *
+   * @see \Drupal\Core\Url::fromUri
    */
-  public function testValidateWithInvalidUrl() {
+  public function testValidateWithMalformedUri() {
     $link = $this->getMock('Drupal\link\LinkItemInterface');
     $link->expects($this->any())
       ->method('getUrl')