--- old/test/jdk/java/util/Optional/Basic.java	2018-04-17 22:26:28.219630383 -0700
+++ new/test/jdk/java/util/Optional/Basic.java	2018-04-17 22:26:27.933604048 -0700
@@ -52,6 +52,7 @@
         assertFalse(empty.equals("unexpected"));
 
         assertFalse(empty.isPresent());
+        assertTrue(empty.isEmpty());
         assertEquals(empty.hashCode(), 0);
         assertEquals(empty.orElse("x"), "x");
         assertEquals(empty.orElseGet(() -> "y"), "y");
@@ -87,6 +88,7 @@
         assertFalse(opt.equals("unexpected"));
 
         assertTrue(opt.isPresent());
+        assertFalse(opt.isEmpty());
         assertEquals(opt.hashCode(), expected.hashCode());
         assertEquals(opt.orElse("unexpected"), expected);
         assertEquals(opt.orElseGet(() -> "unexpected"), expected);