test/jdk/java/io/File/TimeZoneLastModified.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug 6212869 8347841
 * @summary Determine if lastModified() works after TimeZone.setDefault()
 * @run main/othervm TimeZoneLastModified
 */

import java.io.File;
import java.time.ZoneId;
import java.util.TimeZone;

public class TimeZoneLastModified {
    // Tue, 04 Jun 2002 13:56:50.002 GMT
    private static final long TIME = 1023199010002L;

    public static void main(String[] args) throws Throwable {
        int failures = test(null);
        for (String timeZoneID : TimeZone.getAvailableIDs()) {
            if (ZoneId.SHORT_IDS.containsKey(timeZoneID)) {
                continue;
            }
            failures += test(timeZoneID);
        }
        if (failures != 0) {
            throw new RuntimeException("TimeZoneLastModified failed");
        }
        System.out.println("TimeZoneLastModified passed");
    }

    private static int test(String timeZoneID) throws Throwable {
        File f = new File("test-timezone.txt");
        int failures = 0;
        try {
            f.createNewFile();

            if (timeZoneID != null) {
                TimeZone.setDefault(TimeZone.getTimeZone(timeZoneID));
            }

            boolean succeeded = f.setLastModified(TIME);
            if (!succeeded) {
                System.err.format
                    ("Setting time to %d failed for time zone %s%n",
                    TIME, timeZoneID);
                failures++;
            }

            long time = f.lastModified();
            if (Math.abs(time - TIME) > 999) { // account for second precision
                System.err.format
                    ("Wrong modification time (ms): expected %d, obtained %d%n",
                    TIME, time);
                failures++;
            }
        } finally {
            f.delete();
        }

        return failures;
    }
}