1 /*
   2  * Copyright (c) 2014, 2016, 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  * @summary Verify no change in sources implies no change in binaries
  27  * @bug 8054689
  28  * @author Fredrik O
  29  * @author sogoel (rewrite)
  30  * @library /tools/lib
  31  * @modules jdk.compiler/com.sun.tools.javac.api
  32  *          jdk.compiler/com.sun.tools.javac.main
  33  *          jdk.compiler/com.sun.tools.sjavac
  34  * @build Wrapper toolbox.ToolBox
  35  * @run main Wrapper IncCompileNoChanges
  36  */
  37 
  38 import java.util.*;
  39 import java.nio.file.*;
  40 
  41 public class IncCompileNoChanges  extends SJavacTester {
  42     public static void main(String... args) throws Exception {
  43         IncCompileNoChanges nc = new IncCompileNoChanges();
  44         nc.test();
  45     }
  46 
  47     // Remember the previous bin and headers state here.
  48     Map<String,Long> previous_bin_state;
  49     Map<String,Long> previous_headers_state;
  50 
  51     void test() throws Exception {
  52         Files.createDirectories(GENSRC);
  53         Files.createDirectories(BIN);
  54         Files.createDirectories(HEADERS);
  55 
  56         initialCompile();
  57         incrementalCompileNoChanges();
  58     }
  59 
  60     // Testing that no change in sources implies no change in binaries
  61     void incrementalCompileNoChanges() throws Exception {
  62         previous_bin_state = collectState(BIN);
  63         previous_headers_state = collectState(HEADERS);
  64         System.out.println("\nIn incrementalCompileNoChanges() ");
  65         System.out.println("Testing that no change in sources implies no change in binaries");
  66         compile(GENSRC.toString(),
  67                 "-d", BIN.toString(),
  68                 "--state-dir=" + BIN,
  69                 "-h", HEADERS.toString(),
  70                 "-j", "1",
  71                 "--log=debug");
  72         Map<String,Long> new_bin_state = collectState(BIN);
  73         verifyEqual(new_bin_state, previous_bin_state);
  74         Map<String,Long> new_headers_state = collectState(HEADERS);
  75         verifyEqual(previous_headers_state, new_headers_state);
  76     }
  77 }