--- /dev/null
+<?php
+
+namespace Drupal\Tests\datetime\Unit\Plugin\migrate\field\d6;
+
+/**
+ * @group migrate
+ * @group legacy
+ */
+class DateFieldLegacyTest extends DateFieldTest {
+
+ /**
+ * @expectedDeprecation Deprecated in Drupal 8.6.0, to be removed before Drupal 9.0.0. Use defineValueProcessPipeline() instead. See https://www.drupal.org/node/2944598.
+ */
+ public function testUnknownDateType($method = 'processFieldValues') {
+ parent::testUnknownDateType($method);
+ }
+
+}