diff --git a/core/modules/link/tests/src/Functional/LinkFieldTest.php b/core/modules/link/tests/src/Functional/LinkFieldTest.php
index ecfadcd..d74c3a1 100644
--- a/core/modules/link/tests/src/Functional/LinkFieldTest.php
+++ b/core/modules/link/tests/src/Functional/LinkFieldTest.php
@@ -818,22 +818,22 @@ function testLinkRequired() {
     // Tests if both URL and link text are both marked as required for the field
     // $field_both_required.
     $result = $this->xpath('//label[contains(@class, :class) and contains(text(), :text) and contains(@for, :for)]', [':class' => 'form-required', ':text' => 'URL', ':for' => 'edit-' . $field_both_required . '-0-uri']);
-    $this->assertEqual(count($result), 1, "URL is marked as required when both the URL and link field are set to required.");
+    $this->assertEquals(count($result), 1, "URL is marked as required when both the URL and link field are set to required.");
     $result = $this->xpath('//label[contains(@class, :class) and contains(text(), :text) and contains(@for, :for)]', [':class' => 'form-required', ':text' => 'Link text', ':for' => 'edit-' . $field_both_required . '-0-title']);
-    $this->assertEqual(count($result), 1, "Link text is marked as required when both the URL and link field are set to required.");
+    $this->assertEquals(count($result), 1, "Link text is marked as required when both the URL and link field are set to required.");
 
     // Tests if only link text marked as required for the field $field_url_only.
     $result = $this->xpath('//label[contains(@class, :class) and contains(@for, :for)]', [':class' => 'form-required', ':for' => 'edit-' . $field_url_only . '-0-uri']);
-    $this->assertEqual(count($result), 1, "URL is marked as required when only the URL is set to required.");
+    $this->assertEquals(count($result), 1, "URL is marked as required when only the URL is set to required.");
     $result = $this->xpath('//label[not(contains(@class, :class)) and contains(@for, :for)]', [':class' => 'form-required', ':for' => 'edit-' . $field_url_only . '-0-title']);
-    $this->assertEqual(count($result), 1, "Link text is not marked as required when only the URL is set to required.");
+    $this->assertEquals(count($result), 1, "Link text is not marked as required when only the URL is set to required.");
 
     // Tests if URL or or link text are not marked as required for
     // $field_text_only before posting the form.
     $result = $this->xpath('//label[not(contains(@class, :class)) and contains(@for, :for)]', [':class' => 'form-required', ':for' => 'edit-' . $field_text_only . '-0-uri']);
-    $this->assertEqual(count($result), 1, "Before posting the form the URL is not marked as required when only link text is set as required.");
+    $this->assertEquals(count($result), 1, "Before posting the form the URL is not marked as required when only link text is set as required.");
     $result = $this->xpath('//label[not(contains(@class, :class)) and contains(@for, :for)]', [':class' => 'form-required', ':for' => 'edit-' . $field_text_only . '-0-title']);
-    $this->assertEqual(count($result), 1, "Before posting the form the link text is not marked as required when only the link text is set to required.");
+    $this->assertEquals(count($result), 1, "Before posting the form the link text is not marked as required when only the link text is set to required.");
 
     // Tests if the link text is not marked as required after posting a form
     // with data only for URL for the field $field_url_only.
@@ -843,7 +843,7 @@ function testLinkRequired() {
       "{$field_url_only}[0][uri]" => 'http://www.example.com',
     ];
     $this->drupalPostForm('entity_test/add', $edit, t('Save'));
-    $this->assertNoText(t('@name field is required.', array('@name' => t('Link text'))));
+    $this->assertSession()->pageTextNotContains(t('@name field is required.', array('@name' => t('Link text'))));
 
     // Posts all required data, except for the link text for $field_text_only.
     $edit = [
@@ -857,9 +857,9 @@ function testLinkRequired() {
     // Tests if only link text is marked as required for $field_text_only after
     // posting a form with URL, but without link text.
     $result = $this->xpath('//label[not(contains(@class, :class)) and contains(@for, :for)]', [':class' => 'form-required', ':for' => 'edit-' . $field_text_only . '-0-uri']);
-    $this->assertEqual(count($result), 1, "URL is not marked as required when only link text is set as required.");
+    $this->assertEquals(count($result), 1, "URL is not marked as required when only link text is set as required.");
     $result = $this->xpath('//label[contains(@class, :class) and contains(@for, :for)]', [':class' => 'form-required', ':for' => 'edit-' . $field_text_only . '-0-title']);
-    $this->assertEqual(count($result), 1, "Link text is marked as required when only the link text is set to required.");
+    $this->assertEquals(count($result), 1, "Link text is marked as required when only the link text is set to required.");
   }
 
 }