diff --git a/tests/src/Functional/DiffAdminFormsTest.php b/tests/src/Functional/DiffAdminFormsTest.php
index 58a2f3c09fdeeeb98ba6155e5e604180b81c6d44..6416e172fcf21525c1f18485c3031db831399887 100644
--- a/tests/src/Functional/DiffAdminFormsTest.php
+++ b/tests/src/Functional/DiffAdminFormsTest.php
@@ -67,16 +67,16 @@ class DiffAdminFormsTest extends DiffTestBase {
   public function testRequirements(): void {
     \Drupal::moduleHandler()->loadInclude('diff', 'install');
     $requirements = \diff_requirements('runtime');
-    $this->assertEquals($requirements['html_diff_advanced']['title'], 'Diff');
+    $this->assertEquals('Diff', $requirements['html_diff_advanced']['title']);
 
     $has_htmlDiffAdvanced = \class_exists('\HtmlDiffAdvanced');
     if (!$has_htmlDiffAdvanced) {
       // The plugin is disabled dependencies are missing.
-      $this->assertEquals($requirements['html_diff_advanced']['value'], 'Visual inline layout');
+      $this->assertEquals('Visual inline layout', $requirements['html_diff_advanced']['value']);
     }
     else {
       // The plugin is enabled by default if dependencies are met.
-      $this->assertEquals($requirements['html_diff_advanced']['value'], 'Installed correctly');
+      $this->assertEquals('Installed correctly', $requirements['html_diff_advanced']['value']);
     }
   }
 
@@ -167,7 +167,7 @@ class DiffAdminFormsTest extends DiffTestBase {
     $this->assertSession()->linkExists('Raw');
     $this->assertSession()->linkExists('Strip tags');
     $text = $this->xpath('//tbody/tr[4]/td[3]');
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $text[0]->getHtml())), '<p>great_body</p>');
+    $this->assertEquals('<p>great_body</p>', \htmlspecialchars_decode(\strip_tags((string) $text[0]->getHtml())));
 
     // Change the settings of the layouts, disable the single column.
     $edit = [
diff --git a/tests/src/Functional/DiffPluginTest.php b/tests/src/Functional/DiffPluginTest.php
index 233fbd8033285baf81a1dbbe6c77a2e6621f882e..345e562408a1ea5fab7282cac4aeb5c6b8b89f3b 100644
--- a/tests/src/Functional/DiffPluginTest.php
+++ b/tests/src/Functional/DiffPluginTest.php
@@ -196,7 +196,7 @@ class DiffPluginTest extends DiffPluginTestBase {
     $rows = $this->xpath('//tbody/tr');
     $diff_row = $rows[1]->findAll('xpath', '/td');
     $this->assertCount(3, $rows);
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $diff_row[2]->getHtml())), '<p>body</p>');
+    $this->assertEquals('<p>body</p>', \htmlspecialchars_decode(\strip_tags((string) $diff_row[2]->getHtml())));
 
     // Create a new revision and update the body.
     $edit = [
@@ -216,9 +216,9 @@ class DiffPluginTest extends DiffPluginTestBase {
     // multiple rows show and all of them, including empty lines, display line
     // numbers.
     $this->assertGreaterThan(3, \count($rows));
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $rows[1]->findAll('xpath', '/td')[3]->getHtml())), '1');
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $rows[2]->findAll('xpath', '/td')[3]->getHtml())), '2');
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $rows[3]->findAll('xpath', '/td')[3]->getHtml())), '3');
+    $this->assertEquals('1', \htmlspecialchars_decode(\strip_tags((string) $rows[1]->findAll('xpath', '/td')[3]->getHtml())));
+    $this->assertEquals('2', \htmlspecialchars_decode(\strip_tags((string) $rows[2]->findAll('xpath', '/td')[3]->getHtml())));
+    $this->assertEquals('3', \htmlspecialchars_decode(\strip_tags((string) $rows[3]->findAll('xpath', '/td')[3]->getHtml())));
   }
 
 }
diff --git a/tests/src/Functional/DiffRevisionTest.php b/tests/src/Functional/DiffRevisionTest.php
index 39ff16acc0ac68b100c9c190b7f33edc9e467dcf..c56784348b98b51980a8a69dca5e085fa42d7e02 100644
--- a/tests/src/Functional/DiffRevisionTest.php
+++ b/tests/src/Functional/DiffRevisionTest.php
@@ -102,14 +102,14 @@ class DiffRevisionTest extends DiffTestBase {
     // Assert the revision comment.
     $this->assertSession()->responseContains('diff-revision__item-message">Revision 2 comment');
     // Assert changes made to the body, text 1 changed to 2.
-    $this->assertEquals($diff_row[0]->getText(), '1');
-    $this->assertEquals($diff_row[1]->getText(), '-');
-    $this->assertEquals($diff_row[2]->find('xpath', 'span')->getText(), '1');
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $diff_row[2]->getHtml())), '<p>Revision 1</p>');
-    $this->assertEquals($diff_row[3]->getText(), '1');
-    $this->assertEquals($diff_row[4]->getText(), '+');
-    $this->assertEquals($diff_row[5]->find('xpath', 'span')->getText(), '2');
-    $this->assertEquals(\htmlspecialchars_decode((\strip_tags((string) $diff_row[5]->getHtml()))), '<p>Revision 2</p>');
+    $this->assertEquals('1', $diff_row[0]->getText());
+    $this->assertEquals('-', $diff_row[1]->getText());
+    $this->assertEquals('1', $diff_row[2]->find('xpath', 'span')->getText());
+    $this->assertEquals('<p>Revision 1</p>', \htmlspecialchars_decode(\strip_tags((string) $diff_row[2]->getHtml())));
+    $this->assertEquals('1', $diff_row[3]->getText());
+    $this->assertEquals('+', $diff_row[4]->getText());
+    $this->assertEquals('2', $diff_row[5]->find('xpath', 'span')->getText());
+    $this->assertEquals('<p>Revision 2</p>', \htmlspecialchars_decode((\strip_tags((string) $diff_row[5]->getHtml()))));
 
     // Compare the revisions in markdown mode.
     $this->clickLink('Strip tags');
@@ -124,12 +124,12 @@ class DiffRevisionTest extends DiffTestBase {
     // Extract the changes.
     $diff_row = $rows[1]->findAll('xpath', '/td');
     // Assert changes made to the body, text 1 changed to 2.
-    $this->assertEquals($diff_row[0]->getText(), '-');
-    $this->assertEquals($diff_row[1]->find('xpath', 'span')->getText(), '1');
-    $this->assertEquals(\htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[1]->getHtml()))), 'Revision 1');
-    $this->assertEquals($diff_row[2]->getText(), '+');
-    $this->assertEquals($diff_row[3]->find('xpath', 'span')->getText(), '2');
-    $this->assertEquals(\htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[3]->getHtml()))), 'Revision 2');
+    $this->assertEquals('-', $diff_row[0]->getText());
+    $this->assertEquals('1', $diff_row[1]->find('xpath', 'span')->getText());
+    $this->assertEquals('Revision 1', \htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[1]->getHtml()))));
+    $this->assertEquals('+', $diff_row[2]->getText());
+    $this->assertEquals('2', $diff_row[3]->find('xpath', 'span')->getText());
+    $this->assertEquals('Revision 2', \htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[3]->getHtml()))));
 
     // Compare the revisions in single column mode.
     $this->clickLink('Unified fields');
@@ -144,25 +144,25 @@ class DiffRevisionTest extends DiffTestBase {
     $rows = $this->xpath('//tbody/tr');
     $diff_row = $rows[1]->findAll('xpath', '/td');
     // Assert changes made to the body, text 1 changed to 2.
-    $this->assertEquals($diff_row[0]->getText(), '1');
-    $this->assertEquals($diff_row[1]->getText(), '');
-    $this->assertEquals($diff_row[2]->getText(), '-');
-    $this->assertEquals($diff_row[3]->find('xpath', 'span')->getText(), '1');
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $diff_row[3]->getHtml())), '<p>Revision 1</p>');
+    $this->assertEquals('1', $diff_row[0]->getText());
+    $this->assertEquals('', $diff_row[1]->getText());
+    $this->assertEquals('-', $diff_row[2]->getText());
+    $this->assertEquals('1', $diff_row[3]->find('xpath', 'span')->getText());
+    $this->assertEquals('<p>Revision 1</p>', \htmlspecialchars_decode(\strip_tags((string) $diff_row[3]->getHtml())));
     $diff_row = $rows[2]->findAll('xpath', '/td');
-    $this->assertEquals($diff_row[0]->getText(), '');
-    $this->assertEquals($diff_row[1]->getText(), '1');
-    $this->assertEquals($diff_row[2]->getText(), '+');
-    $this->assertEquals($diff_row[3]->find('xpath', 'span')->getText(), '2');
-    $this->assertEquals(\htmlspecialchars_decode(\strip_tags((string) $diff_row[3]->getHtml())), '<p>Revision 2</p>');
+    $this->assertEquals('', $diff_row[0]->getText());
+    $this->assertEquals('1', $diff_row[1]->getText());
+    $this->assertEquals('+', $diff_row[2]->getText());
+    $this->assertEquals('2', $diff_row[3]->find('xpath', 'span')->getText());
+    $this->assertEquals('<p>Revision 2</p>', \htmlspecialchars_decode(\strip_tags((string) $diff_row[3]->getHtml())));
     $this->assertSession()->pageTextContainsOnce('first_unique_text');
     $this->assertSession()->pageTextContainsOnce('second_unique_text');
     $diff_row = $rows[3]->findAll('xpath', '/td');
-    $this->assertEquals($diff_row[0]->getText(), '2');
-    $this->assertEquals($diff_row[1]->getText(), '2');
+    $this->assertEquals('2', $diff_row[0]->getText());
+    $this->assertEquals('2', $diff_row[1]->getText());
     $diff_row = $rows[4]->findAll('xpath', '/td');
-    $this->assertEquals($diff_row[0]->getText(), '3');
-    $this->assertEquals($diff_row[1]->getText(), '3');
+    $this->assertEquals('3', $diff_row[0]->getText());
+    $this->assertEquals('3', $diff_row[1]->getText());
 
     $this->clickLink('Strip tags');
     // Extract the changes.
@@ -171,13 +171,13 @@ class DiffRevisionTest extends DiffTestBase {
 
     // Assert changes made to the body, with strip_tags filter and make sure
     // there are no line numbers.
-    $this->assertEquals($diff_row[0]->getText(), '-');
-    $this->assertEquals($diff_row[1]->find('xpath', 'span')->getText(), '1');
-    $this->assertEquals(\htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[1]->getHtml()))), 'Revision 1');
+    $this->assertEquals('-', $diff_row[0]->getText());
+    $this->assertEquals('1', $diff_row[1]->find('xpath', 'span')->getText());
+    $this->assertEquals('Revision 1', \htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[1]->getHtml()))));
     $diff_row = $rows[2]->findAll('xpath', '/td');
-    $this->assertEquals($diff_row[0]->getText(), '+');
-    $this->assertEquals($diff_row[1]->find('xpath', 'span')->getText(), '2');
-    $this->assertEquals(\htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[1]->getHtml()))), 'Revision 2');
+    $this->assertEquals('+', $diff_row[0]->getText());
+    $this->assertEquals('2', $diff_row[1]->find('xpath', 'span')->getText());
+    $this->assertEquals('Revision 2', \htmlspecialchars_decode(\trim(\strip_tags((string) $diff_row[1]->getHtml()))));
 
     $this->drupalGet('node/' . $node->id());
     $this->clickLink(\t('Revisions'));
@@ -272,7 +272,7 @@ class DiffRevisionTest extends DiffTestBase {
     // Check that the last revision is not the current one.
     $this->assertSession()->linkExists('Set as current revision');
     $text = $this->xpath('//tbody/tr[2]/td[4]/em');
-    $this->assertEquals($text[0]->getText(), 'Current revision');
+    $this->assertEquals('Current revision', $text[0]->getText());
 
     // Set the last revision as current.
     $this->clickLink('Set as current revision');
@@ -282,12 +282,12 @@ class DiffRevisionTest extends DiffTestBase {
       // With content moderation, the new revision will not be current.
       // @see https://www.drupal.org/node/2899719
       $text = $this->xpath('//tbody/tr[1]/td[4]/div/div/ul/li/a');
-      $this->assertEquals($text[0]->getText(), 'Set as current revision');
+      $this->assertEquals('Set as current revision', $text[0]->getText());
     }
     else {
       // Check the last revision is set as current.
       $text = $this->xpath('//tbody/tr[1]/td[4]/em');
-      $this->assertEquals($text[0]->getText(), 'Current revision');
+      $this->assertEquals('Current revision', $text[0]->getText());
       $this->assertSession()->linkNotExists('Set as current revision');
     }
 
diff --git a/tests/src/FunctionalJavascript/DiffLocaleTest.php b/tests/src/FunctionalJavascript/DiffLocaleTest.php
index 86c3a26d3e0fbb685f0a5d8320837bd0258e8460..aba27be8427454aa77625ae7f431d4e9e95a3a1d 100644
--- a/tests/src/FunctionalJavascript/DiffLocaleTest.php
+++ b/tests/src/FunctionalJavascript/DiffLocaleTest.php
@@ -156,14 +156,14 @@ class DiffLocaleTest extends DiffTestBase {
     // Compare first two revisions.
     $this->drupalGet('node/' . $node->id() . '/revisions/view/' . $revision1 . '/' . $revision2 . '/split_fields');
     $diffs = $this->getSession()->getPage()->findAll('xpath', '//span[@class="diffchange"]');
-    $this->assertEquals($diffs[0]->getText(), 'english_revision_0');
-    $this->assertEquals($diffs[1]->getText(), 'english_revision_1');
+    $this->assertEquals('english_revision_0', $diffs[0]->getText());
+    $this->assertEquals('english_revision_1', $diffs[1]->getText());
 
     // Check next difference.
     $this->clickLink('Next change');
     $diffs = $this->getSession()->getPage()->findAll('xpath', '//span[@class="diffchange"]');
-    $this->assertEquals($diffs[0]->getText(), 'english_revision_1');
-    $this->assertEquals($diffs[1]->getText(), 'english_revision_2');
+    $this->assertEquals('english_revision_1', $diffs[0]->getText());
+    $this->assertEquals('english_revision_2', $diffs[1]->getText());
 
     // There shouldn't be other differences in the current language.
     $this->assertSession()->linkNotExists('Next change');
@@ -171,8 +171,8 @@ class DiffLocaleTest extends DiffTestBase {
     // Attempt to visit with a valid revision but for the wrong language.
     $this->drupalGet('node/' . $node->id() . '/revisions/view/' . $revision5 . '/' . $revision1 . '/split_fields');
     $diffs = $this->getSession()->getPage()->findAll('xpath', '//span[@class="diffchange"]');
-    $this->assertEquals($diffs[0]->getText(), 'english_revision_2');
-    $this->assertEquals($diffs[1]->getText(), 'english_revision_0');
+    $this->assertEquals('english_revision_2', $diffs[0]->getText());
+    $this->assertEquals('english_revision_0', $diffs[1]->getText());
   }
 
   /**
@@ -209,14 +209,14 @@ class DiffLocaleTest extends DiffTestBase {
     // Compare the first two revisions.
     $this->drupalGet('node/' . $node->id() . '/revisions/view/' . $revision1 . '/' . $revision2 . '/split_fields');
     $diffs = $this->getSession()->getPage()->findAll('xpath', '//span[@class="diffchange"]');
-    $this->assertEquals($diffs[0]->getText(), 'undefined_language_revision_0');
-    $this->assertEquals($diffs[1]->getText(), 'undefined_language_revision_1');
+    $this->assertEquals('undefined_language_revision_0', $diffs[0]->getText());
+    $this->assertEquals('undefined_language_revision_1', $diffs[1]->getText());
 
     // Compare the next two revisions.
     $this->clickLink('Next change');
     $diffs = $this->getSession()->getPage()->findAll('xpath', '//span[@class="diffchange"]');
-    $this->assertEquals($diffs[0]->getText(), 'undefined_language_revision_1');
-    $this->assertEquals($diffs[1]->getText(), 'undefined_language_revision_2');
+    $this->assertEquals('undefined_language_revision_1', $diffs[0]->getText());
+    $this->assertEquals('undefined_language_revision_2', $diffs[1]->getText());
   }
 
 }