test/jdk/java/awt/Dialog/SiblingChildOrder/SiblingChildOrderTest.java

rev 47956 : 8191678: [TESTBUG] Add keyword headful in java/awt and javax tests.
Summary: Also fix some NPE thrown if run headless.

@@ -19,13 +19,15 @@
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 
-/* @test
+/**
+ * @test
  * @bug 8190230
  * @summary [macosx] Order of overlapping of modal dialogs is wrong
+ * @key headful
  * @run main SiblingChildOrderTest
  */
 
 import javax.swing.*;
 import java.awt.*;