--- /dev/null
+<?php
+
+namespace Drupal\Tests\Core\Entity;
+
+use Drupal\Component\Datetime\TimeInterface;
+use Drupal\Core\Entity\ContentEntityForm;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * @coversDefaultClass \Drupal\Core\Entity\ContentEntityForm
+ * @group Entity
+ */
+class ContentEntityFormTest extends UnitTestCase {
+
+ /**
+ * @group legacy
+ * @expectedDeprecation Passing the entity.manager service to ContentEntityForm::__construct() is deprecated in Drupal 8.6.0 and will be removed before Drupal 9.0.0. Pass the entity.repository service instead. See https://www.drupal.org/node/2549139.
+ */
+ public function testEntityManagerDeprecation() {
+ $entity_manager = $this->prophesize(EntityManagerInterface::class)->reveal();
+ $entity_type_bundle_info = $this->prophesize(EntityTypeBundleInfoInterface::class)->reveal();
+ $time = $this->prophesize(TimeInterface::class)->reveal();
+ $form = new ContentEntityForm($entity_manager, $entity_type_bundle_info, $time);
+
+ $reflected_form = new \ReflectionClass($form);
+ $entity_manager_property = $reflected_form->getProperty('entityManager');
+ $entity_manager_property->setAccessible(TRUE);
+ $this->assertTrue($entity_manager_property->getValue($form) === $entity_manager);
+ }
+
+}