reverted:
--- b/tests/src/Functional/SchedulerPastDatesTest.php
+++ a/tests/src/Functional/SchedulerPastDatesTest.php
@@ -59,15 +59,15 @@
     $this->nodetype->setThirdPartySetting('scheduler', 'publish_past_date', 'schedule')->save();
     $this->drupalPostForm('node/' . $node->id() . '/edit', $edit, t('Save and keep published'));
     $publish_time = $edit['publish_on[0][value][date]'] . ' ' . $edit['publish_on[0][value][time]'];
+    $this->assertNoText(t("The 'publish on' date must be in the future"), 'No error message is shown when the publication date is in the past and the "schedule" behavior is chosen.');
+    $this->assertText(sprintf('%s %s has been updated.', $this->typeName, SafeMarkup::checkPlain($edit['title[0][value]'])), 'The node is saved successfully when the publication date is in the past and the "schedule" behavior is chosen.');
+    $this->assertText(t('This post is unpublished and will be published @publish_time.', ['@publish_time' => $publish_time]), 'The node is scheduled to be published when the publication date is in the past and the "schedule" behavior is chosen.');
-    $this->assertTextHelper(t("The 'publish on' date must be in the future"), 'No error message is shown when the publication date is in the past and the "schedule" behavior is chosen.');
-    $this->assertTextHelper((sprintf('%s %s has been updated.', $this->typeName, SafeMarkup::checkPlain($edit['title[0][value]']))), 'The node is saved successfully when the publication date is in the past and the "schedule" behavior is chosen.');
-    $this->assertTextHelper((t('This post is unpublished and will be published @publish_time.', ['@publish_time' => $publish_time])), 'The node is scheduled to be published when the publication date is in the past and the "schedule" behavior is chosen.');
 
     // Reload the node and check that it is unpublished but scheduled correctly.
     $this->nodeStorage->resetCache([$node->id()]);
     $node = $this->nodeStorage->load($node->id());
     $this->assertFalse($node->isPublished(), 'The node has been unpublished when the publication date is in the past and the "schedule" behavior is chosen.');
+    $this->assertEqual(\Drupal::service('date.formatter')->format($node->publish_on->value, 'custom', 'Y-m-d H:i:s'), $publish_time, 'The node is scheduled for the required date');
-    $this->assertEquals(\Drupal::service('date.formatter')->format($node->publish_on->value, 'custom', 'Y-m-d H:i:s'), $publish_time, 'The node is scheduled for the required date');
 
     // Simulate a cron run and check that the node is published.
     scheduler_cron();
@@ -82,7 +82,7 @@
       'unpublish_on[0][value][time]' => \Drupal::service('date.formatter')->format(REQUEST_TIME - 3600, 'custom', 'H:i:s'),
     ];
     $this->drupalPostForm('node/add/page', $edit, t('Save and publish'));
+    $this->assertRaw(t("The 'unpublish on' date must be in the future"), 'An error message is shown when the unpublish date is in the past.');
-    $this->assert(t("The 'unpublish on' date must be in the future"), 'An error message is shown when the unpublish date is in the past.');
   }
 
 }
reverted:
--- b/tests/src/Functional/SchedulerRevisioningTest.php
+++ a/tests/src/Functional/SchedulerRevisioningTest.php
@@ -58,7 +58,7 @@
       ->execute()
       ->fetchColumn();
 
+    return $this->assertEqual($log_message, $value, $message, $group);
-    return $this->assertEquals($log_message, $value, $message, $group);
   }
 
   /**
@@ -83,7 +83,7 @@
       ->execute()
       ->fetchColumn();
 
+    return $this->assertEqual($count, $value, $message, $group);
-    return $this->assertEquals($count, $value, $message, $group);
   }
 
   /**
@@ -155,7 +155,7 @@
     // Get the created date from the node and check that it has not changed.
     $created_after_cron = $node->created->value;
     $this->assertTrue($node->isPublished(), 'The node has been published.');
+    $this->assertEqual($created, $created_after_cron, 'The node creation date is not changed by default.');
-    $this->assertEquals($created, $created_after_cron, 'The node creation date is not changed by default.');
 
     // Set option to change the created date to match the publish_on date.
     $this->nodetype->setThirdPartySetting('scheduler', 'publish_touch', TRUE)->save();
@@ -164,7 +164,7 @@
     $node = $this->schedule($node, 'publish');
     // Check that the created date has changed to match the publish_on date.
     $created_after_cron = $node->created->value;
+    $this->assertEqual(strtotime('-1 day', REQUEST_TIME), $created_after_cron, "With 'touch' option set, the node creation date is changed to match the publishing date.");
-    $this->assertEquals(strtotime('-1 day', REQUEST_TIME), $created_after_cron, "With 'touch' option set, the node creation date is changed to match the publishing date.");
   }
 
 }