1 /*
   2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8206986
  27  * @summary Check switch expressions embedded in switch expressions.
  28  * @compile ExpressionSwitchInExpressionSwitch.java
  29  * @run main ExpressionSwitchInExpressionSwitch
  30  */
  31 
  32 public class ExpressionSwitchInExpressionSwitch {
  33     public static void main(String[] args) {
  34 
  35         int j = 42;
  36         int i = switch (j) {
  37             default -> (switch (j) { default -> 0; } )+1;
  38         };
  39         if (i!=1) {
  40             throw new AssertionError("Unexpected result: " + i);
  41         }
  42         i = switch (j) {
  43             default -> {
  44                 int k = switch (j) {
  45                     default -> {
  46                         yield 42;
  47                     }
  48                 };
  49                 System.out.println("didn't yield to the top level");
  50                 yield 43;
  51             }
  52         };
  53         if (i!=43) {
  54             throw new AssertionError("Unexpected result: " + i);
  55         }
  56     }
  57 }