/**
  * @covers ::copyFormValuesToEntity
  */
 public function testCopyFormValuesToEntity()
 {
     $entity_id = 'test_config_entity_id';
     $values = ['id' => $entity_id];
     $entity = $this->getMockBuilder('\\Drupal\\Tests\\Core\\Config\\Entity\\Fixtures\\ConfigEntityBaseWithPluginCollections')->setConstructorArgs([$values, 'test_config_entity'])->setMethods(['getPluginCollections'])->getMock();
     $entity->expects($this->atLeastOnce())->method('getPluginCollections')->willReturn(['key_controlled_by_plugin_collection' => NULL]);
     $this->entityForm->setEntity($entity);
     $form_state = (new FormState())->setValues(['regular_key' => 'foo', 'key_controlled_by_plugin_collection' => 'bar']);
     $result = $this->entityForm->buildEntity([], $form_state);
     $this->assertSame($entity_id, $result->id());
     // The regular key should have a value, but the one controlled by a plugin
     // collection should not have been set.
     $this->assertSame('foo', $result->get('regular_key'));
     $this->assertNull($result->get('key_controlled_by_plugin_collection'));
 }