test/tools/sjavac/IncCompileNoChanges.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @summary Verify no change in sources implies no change in binaries
 * @bug 8054689
 * @author Fredrik O
 * @author sogoel (rewrite)
 * @library /tools/lib
 * @modules jdk.compiler/com.sun.tools.javac.api
 *          jdk.compiler/com.sun.tools.javac.file
 *          jdk.compiler/com.sun.tools.javac.main
 *          jdk.compiler/com.sun.tools.sjavac
 *          jdk.jdeps/com.sun.tools.javap
 * @build Wrapper ToolBox
 * @run main Wrapper IncCompileNoChanges
 */

import java.util.*;
import java.nio.file.*;

public class IncCompileNoChanges  extends SJavacTester {
    public static void main(String... args) throws Exception {
        IncCompileNoChanges nc = new IncCompileNoChanges();
        nc.test();
    }

    // Remember the previous bin and headers state here.
    Map<String,Long> previous_bin_state;
    Map<String,Long> previous_headers_state;

    void test() throws Exception {
        Files.createDirectories(GENSRC);
        Files.createDirectories(BIN);
        Files.createDirectories(HEADERS);

        initialCompile();
        incrementalCompileNoChanges();
    }

    // Testing that no change in sources implies no change in binaries
    void incrementalCompileNoChanges() throws Exception {
        previous_bin_state = collectState(BIN);
        previous_headers_state = collectState(HEADERS);
        System.out.println("\nIn incrementalCompileNoChanges() ");
        System.out.println("Testing that no change in sources implies no change in binaries");
        compile(GENSRC.toString(),
                "-d", BIN.toString(),
                "--state-dir=" + BIN,
                "-h", HEADERS.toString(),
                "-j", "1",
                "--log=debug");
        Map<String,Long> new_bin_state = collectState(BIN);
        verifyEqual(new_bin_state, previous_bin_state);
        Map<String,Long> new_headers_state = collectState(HEADERS);
        verifyEqual(previous_headers_state, new_headers_state);
    }
}