--- /dev/null
+<?php
+
+namespace Drupal\FunctionalJavascriptTests;
+
+/**
+ * Runs a browser test using PhantomJS.
+ *
+ * Base class for testing browser interaction implemented in JavaScript.
+ */
+abstract class LegacyJavascriptTestBase extends JavascriptTestBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function assertSession($name = NULL) {
+ // Return a WebAssert that supports status code and header assertions.
+ return new JSWebAssert($this->getSession($name), $this->baseUrl);
+ }
+
+}