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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 8309356
 * @summary Read files in includedir in alphanumeric order
 * @modules java.security.jgss/sun.security.krb5
 * @library /test/lib
 * @run main/othervm IncludeDirOrder
 */

import jdk.test.lib.Asserts;
import sun.security.krb5.Config;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collections;
import java.util.Random;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

public class IncludeDirOrder {
    public static void main(String[] args) throws Exception {
        long seed = new Random().nextLong();
        System.out.println("Seed is " + seed);
        Random random = new Random(seed);
        Path xdir = Path.of("x");
        Files.writeString(Path.of("main.conf"), String.format("""
                includedir %s
                [libdefaults]
                default_realm = K
                """, xdir.toAbsolutePath()));
        Files.createDirectory(xdir);
        var list = IntStream.range(10, 20).boxed().collect(Collectors.toList());
        Collections.shuffle(list, random);
        for (var i : list) {
            write(xdir, i);
        }
        // K10 should always be read first
        System.setProperty("java.security.krb5.conf", "main.conf");
        Asserts.assertEQ(Config.getInstance().getDefaultRealm(), "K10");
    }

    static void write(Path xdir, int realm) throws IOException {
        Files.writeString(xdir.resolve("K" + realm), String.format("""
                [libdefaults]
                default_realm = K%d
                """, realm));
    }
}