IncCompileChangeNative.java

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/*
 * @test
 * @summary Verify native files are removed when native method is removed
 * @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.main
 *          jdk.compiler/com.sun.tools.sjavac
 * @build Wrapper toolbox.ToolBox
 * @run main Wrapper IncCompileChangeNative
 */

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

public class IncCompileChangeNative extends SJavacTester {
    public static void main(String... args) throws Exception {
        IncCompileChangeNative cn = new IncCompileChangeNative();
        cn.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();
        incrementalCompileDropAllNatives();
        incrementalCompileAddNative();
    }

    // Update B.java with one less native method i.e. it has no longer any methods
    // Verify that beta_B.h is removed
    void incrementalCompileDropAllNatives() throws Exception {
        previous_bin_state = collectState(BIN);
        previous_headers_state = collectState(HEADERS);
        System.out.println("\nIn incrementalCompileDropAllNatives() ");
        System.out.println("Verify that beta_B.h is removed");
        tb.writeFile(GENSRC.resolve("beta/B.java"),
                     "package beta; import alfa.omega.A; " +
                     "public class B { private int b() { return A.DEFINITION; } }");

        compile(GENSRC.toString(),
                "-d", BIN.toString(),
                "--state-dir=" + BIN,
                "-h", HEADERS.toString(),
                "-j", "1",
                "--log=debug");
        Map<String,Long> new_bin_state = collectState(BIN);
        verifyNewerFiles(previous_bin_state, new_bin_state,
                         BIN + "/beta/B.class",
                         BIN + "/beta/BINT.class",
                         BIN + "/javac_state");
        previous_bin_state = new_bin_state;

        Map<String,Long> new_headers_state = collectState(HEADERS);
        verifyThatFilesHaveBeenRemoved(previous_headers_state, new_headers_state,
                                       HEADERS + "/beta_B.h");
        previous_headers_state = new_headers_state;
    }

    // Update the B.java with a final static annotated with @Native
    // Verify that beta_B.h is added again
    void incrementalCompileAddNative() throws Exception {
        System.out.println("\nIn incrementalCompileAddNative() ");
        System.out.println("Verify that beta_B.h is added again");
        tb.writeFile(GENSRC.resolve("beta/B.java"),
                     "package beta; import alfa.omega.A; public class B {"+
                     "private int b() { return A.DEFINITION; } "+
                     "@java.lang.annotation.Native final static int alfa = 42; }");

        compile(GENSRC.toString(),
                "-d", BIN.toString(),
                "--state-dir=" + BIN,
                "-h", HEADERS.toString(),
                "-j", "1",
                "--log=debug");
        Map<String,Long> new_bin_state = collectState(BIN);
        verifyNewerFiles(previous_bin_state, new_bin_state,
                         BIN + "/beta/B.class",
                         BIN + "/beta/BINT.class",
                         BIN + "/javac_state");
        previous_bin_state = new_bin_state;

        Map<String,Long> new_headers_state = collectState(HEADERS);
        verifyThatFilesHaveBeenAdded(previous_headers_state, new_headers_state,
                                     HEADERS + "/beta_B.h");
        previous_headers_state = new_headers_state;
    }
}