1 /*
   2  * Copyright (c) 2009, 2013, 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.
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  23 
  24 /* @test
  25  * @bug 6844313 8011647
  26  * @summary Unit test for java.nio.file.FileTime
  27  * @key randomness
  28  */
  29 
  30 
  31 import java.nio.file.attribute.FileTime;
  32 import java.time.Instant;
  33 import java.util.concurrent.TimeUnit;
  34 import static java.util.concurrent.TimeUnit.*;
  35 import java.util.Random;
  36 import java.util.EnumSet;
  37 
  38 public class Basic {
  39 
  40     static final Random rand = new Random();
  41 
  42     public static void main(String[] args) {
  43         long now = System.currentTimeMillis();
  44         long tomorrowInDays = TimeUnit.DAYS.convert(now, MILLISECONDS) + 1;
  45         long yesterdayInDays = TimeUnit.DAYS.convert(now, MILLISECONDS) - 1;
  46 
  47         Instant nowInstant = Instant.ofEpochMilli(now);
  48 
  49         // equals
  50         eq(now, MILLISECONDS, now, MILLISECONDS);
  51         eq(now, MILLISECONDS, now*1000L, MICROSECONDS);
  52         neq(now, MILLISECONDS, 0, MILLISECONDS);
  53         neq(now, MILLISECONDS, 0, MICROSECONDS);
  54 
  55         eq(nowInstant, now, MILLISECONDS);
  56         eq(nowInstant, now*1000L, MICROSECONDS);
  57         neq(nowInstant, 0, MILLISECONDS);
  58         neq(nowInstant, 0, MICROSECONDS);
  59 
  60         // compareTo
  61         cmp(now, MILLISECONDS, now, MILLISECONDS, 0);
  62         cmp(now, MILLISECONDS, now*1000L, MICROSECONDS, 0);
  63         cmp(now, MILLISECONDS, now-1234, MILLISECONDS, 1);
  64         cmp(now, MILLISECONDS, now+1234, MILLISECONDS, -1);
  65 
  66         cmp(tomorrowInDays, DAYS, now, MILLISECONDS, 1);
  67         cmp(now, MILLISECONDS, tomorrowInDays, DAYS, -1);
  68         cmp(yesterdayInDays, DAYS, now, MILLISECONDS, -1);
  69         cmp(now, MILLISECONDS, yesterdayInDays, DAYS, 1);
  70         cmp(yesterdayInDays, DAYS, now, MILLISECONDS, -1);
  71 
  72         cmp(Long.MAX_VALUE, DAYS, Long.MAX_VALUE, NANOSECONDS, 1);
  73         cmp(Long.MAX_VALUE, DAYS, Long.MIN_VALUE, NANOSECONDS, 1);
  74         cmp(Long.MIN_VALUE, DAYS, Long.MIN_VALUE, NANOSECONDS, -1);
  75         cmp(Long.MIN_VALUE, DAYS, Long.MAX_VALUE, NANOSECONDS, -1);
  76 
  77         cmp(Instant.MIN, Long.MIN_VALUE, DAYS, 1);
  78         cmp(Instant.MIN, Long.MIN_VALUE, HOURS, 1);
  79         cmp(Instant.MIN, Long.MIN_VALUE, MINUTES, 1);
  80         cmp(Instant.MIN, Long.MIN_VALUE, SECONDS, 1);
  81         cmp(Instant.MIN, Instant.MIN.getEpochSecond() - 1, SECONDS, 1);
  82         cmp(Instant.MIN, Instant.MIN.getEpochSecond() - 100, SECONDS, 1);
  83         cmp(Instant.MIN, Instant.MIN.getEpochSecond(), SECONDS, 0);
  84 
  85         cmp(Instant.MAX, Long.MAX_VALUE, DAYS, -1);
  86         cmp(Instant.MAX, Long.MAX_VALUE, HOURS, -1);
  87         cmp(Instant.MAX, Long.MAX_VALUE, MINUTES, -1);
  88         cmp(Instant.MAX, Long.MAX_VALUE, SECONDS, -1);
  89         cmp(Instant.MAX, Instant.MAX.getEpochSecond() + 1, SECONDS, -1);
  90         cmp(Instant.MAX, Instant.MAX.getEpochSecond() + 100, SECONDS, -1);
  91         cmp(Instant.MAX, Instant.MAX.getEpochSecond(), SECONDS, 0);
  92 
  93         cmp(nowInstant, now, MILLISECONDS, 0);
  94         cmp(nowInstant, now*1000L, MICROSECONDS, 0);
  95         cmp(nowInstant, now-1234, MILLISECONDS, 1);
  96         cmp(nowInstant, now+1234, MILLISECONDS, -1);
  97         cmp(nowInstant, tomorrowInDays, DAYS, -1);
  98         cmp(nowInstant, yesterdayInDays, DAYS, 1);
  99 
 100         // to(TimeUnit)
 101         to(MILLISECONDS.convert(1, DAYS) - 1, MILLISECONDS);
 102         to(MILLISECONDS.convert(1, DAYS) + 0, MILLISECONDS);
 103         to(MILLISECONDS.convert(1, DAYS) + 1, MILLISECONDS);
 104         to(1, MILLISECONDS);
 105         to(0, MILLISECONDS);
 106         to(1, MILLISECONDS);
 107         to(MILLISECONDS.convert(-1, DAYS) - 1, MILLISECONDS);
 108         to(MILLISECONDS.convert(-1, DAYS) + 0, MILLISECONDS);
 109         to(MILLISECONDS.convert(-1, DAYS) + 1, MILLISECONDS);
 110         for (TimeUnit unit: TimeUnit.values()) {
 111             for (int i=0; i<100; i++) { to(rand.nextLong(), unit); }
 112             to(Long.MIN_VALUE, unit);
 113             to(Long.MAX_VALUE, unit);
 114         }
 115 
 116         // toInstant()
 117         int N = 1000;
 118         for (TimeUnit unit : EnumSet.allOf(TimeUnit.class)) {
 119             for (int i = 0; i < N; i++) {
 120                 long value = rand.nextLong();
 121                 FileTime ft = FileTime.from(value, unit);
 122                 Instant instant = ft.toInstant();
 123                 if (instant != Instant.MIN && instant != Instant.MAX) {
 124                     eqTime(value, unit, instant);
 125                 }
 126             }
 127         }
 128         for (TimeUnit unit : EnumSet.allOf(TimeUnit.class)) {
 129             long value = Long.MIN_VALUE;
 130             FileTime ft = FileTime.from(value, unit);
 131             Instant instant = ft.toInstant();
 132             if (unit.compareTo(TimeUnit.SECONDS) < 0) {
 133                 eqTime(value, unit, instant);
 134             } else if (!instant.equals(Instant.MIN)) {
 135                 throw new RuntimeException("should overflow to MIN");
 136             }
 137             value = Long.MAX_VALUE;
 138             ft = FileTime.from(value, unit);
 139             instant = ft.toInstant();
 140             if (unit.compareTo(TimeUnit.SECONDS) < 0) {
 141                 eqTime(value, unit, instant);
 142             } else if (!instant.equals(Instant.MAX)) {
 143                 throw new RuntimeException("should overflow to MAX");
 144             }
 145         }
 146 
 147         // from(Instant)
 148         final long MAX_SECOND = 31556889864403199L;
 149         for (int i = 0; i < N; i++) {
 150             long v = rand.nextLong();
 151             long secs = v % MAX_SECOND;
 152             Instant instant = Instant.ofEpochSecond(secs, rand.nextInt(1000_000_000));
 153             FileTime ft = FileTime.from(instant);
 154             if (!ft.toInstant().equals(instant) || ft.to(SECONDS)  != secs) {
 155                 throw new RuntimeException("from(Instant) failed");
 156             }
 157             long millis = v;
 158             instant = Instant.ofEpochMilli(millis);
 159             ft = FileTime.from(instant);
 160             if (!ft.toInstant().equals(instant) ||
 161                 ft.toMillis()  != instant.toEpochMilli()) {
 162                 throw new RuntimeException("from(Instant) failed");
 163             }
 164             long nanos = v;
 165             ft = FileTime.from(nanos, NANOSECONDS);
 166             secs = nanos / 1000_000_000;
 167             nanos = nanos % 1000_000_000;
 168             instant = Instant.ofEpochSecond(secs, nanos);
 169             if (!ft.equals(FileTime.from(instant))) {
 170                 throw new RuntimeException("from(Instant) failed");
 171             }
 172         }
 173 
 174         // toString
 175         ts(1L, DAYS, "1970-01-02T00:00:00Z");
 176         ts(1L, HOURS, "1970-01-01T01:00:00Z");
 177         ts(1L, MINUTES, "1970-01-01T00:01:00Z");
 178         ts(1L, SECONDS, "1970-01-01T00:00:01Z");
 179         ts(1L, MILLISECONDS, "1970-01-01T00:00:00.001Z");
 180         ts(1L, MICROSECONDS, "1970-01-01T00:00:00.000001Z");
 181         ts(1L, NANOSECONDS, "1970-01-01T00:00:00.000000001Z");
 182         ts(999999999L, NANOSECONDS, "1970-01-01T00:00:00.999999999Z");
 183         ts(9999999999L, NANOSECONDS, "1970-01-01T00:00:09.999999999Z");
 184 
 185         ts(-1L, DAYS, "1969-12-31T00:00:00Z");
 186         ts(-1L, HOURS, "1969-12-31T23:00:00Z");
 187         ts(-1L, MINUTES, "1969-12-31T23:59:00Z");
 188         ts(-1L, SECONDS, "1969-12-31T23:59:59Z");
 189         ts(-1L, MILLISECONDS, "1969-12-31T23:59:59.999Z");
 190         ts(-1L, MICROSECONDS, "1969-12-31T23:59:59.999999Z");
 191         ts(-1L, NANOSECONDS, "1969-12-31T23:59:59.999999999Z");
 192         ts(-999999999L, NANOSECONDS, "1969-12-31T23:59:59.000000001Z");
 193         ts(-9999999999L, NANOSECONDS, "1969-12-31T23:59:50.000000001Z");
 194 
 195         ts(-62135596799999L, MILLISECONDS, "0001-01-01T00:00:00.001Z");
 196         ts(-62135596800000L, MILLISECONDS, "0001-01-01T00:00:00Z");
 197         ts(-62135596800001L, MILLISECONDS, "-0001-12-31T23:59:59.999Z");
 198 
 199         ts(253402300799999L, MILLISECONDS, "9999-12-31T23:59:59.999Z");
 200         ts(-377642044800001L, MILLISECONDS, "-9999-12-31T23:59:59.999Z");
 201 
 202         // NTFS epoch in usec.
 203         ts(-11644473600000000L, MICROSECONDS, "1601-01-01T00:00:00Z");
 204 
 205         ts(Instant.MIN, "-1000000001-01-01T00:00:00Z");
 206         ts(Instant.MAX, "1000000000-12-31T23:59:59.999999999Z");
 207 
 208         try {
 209             FileTime.from(0L, null);
 210             throw new RuntimeException("NullPointerException expected");
 211         } catch (NullPointerException npe) { }
 212         try {
 213             FileTime.from(null);
 214             throw new RuntimeException("NullPointerException expected");
 215         } catch (NullPointerException npe) { }
 216 
 217         FileTime time = FileTime.fromMillis(now);
 218         if (time.equals(null))
 219             throw new RuntimeException("should not be equal to null");
 220         try {
 221             time.compareTo(null);
 222             throw new RuntimeException("NullPointerException expected");
 223         } catch (NullPointerException npe) { }
 224 
 225         // Instant + toMilli() overflow
 226         overflow(Long.MAX_VALUE,
 227                  FileTime.from(Instant.MAX).toMillis());
 228         overflow(Long.MAX_VALUE,
 229                  FileTime.from(Instant.ofEpochSecond(Long.MAX_VALUE / 1000 + 1))
 230                          .toMillis());
 231         overflow(Long.MIN_VALUE,
 232                  FileTime.from(Instant.MIN).toMillis());
 233         overflow(Long.MIN_VALUE,
 234                  FileTime.from(Instant.ofEpochSecond(Long.MIN_VALUE / 1000 - 1))
 235                          .toMillis());
 236 
 237         // Instant + to(TimeUnit) overflow
 238         overflow(Long.MAX_VALUE,
 239                  FileTime.from(Instant.ofEpochSecond(Long.MAX_VALUE / 1000 + 1))
 240                          .to(MILLISECONDS));
 241         overflow(Long.MAX_VALUE,
 242                  FileTime.from(Instant.ofEpochSecond(Long.MAX_VALUE / 1000,
 243                                                      MILLISECONDS.toNanos(1000)))
 244                     .to(MILLISECONDS));
 245         overflow(Long.MIN_VALUE,
 246                  FileTime.from(Instant.ofEpochSecond(Long.MIN_VALUE / 1000 - 1))
 247                          .to(MILLISECONDS));
 248         overflow(Long.MIN_VALUE,
 249                  FileTime.from(Instant.ofEpochSecond(Long.MIN_VALUE / 1000,
 250                                                      -MILLISECONDS.toNanos(1)))
 251                          .to(MILLISECONDS));
 252     }
 253 
 254     static void overflow(long minmax, long v) {
 255         if (v != minmax)
 256             throw new RuntimeException("saturates to Long.MIN/MAX_VALUE expected");
 257     }
 258 
 259     static void cmp(long v1, TimeUnit u1, long v2, TimeUnit u2, int expected) {
 260         int result = FileTime.from(v1, u1).compareTo(FileTime.from(v2, u2));
 261         if (result != expected)
 262             throw new RuntimeException("unexpected order");
 263     }
 264 
 265     static void cmp(Instant ins, long v2, TimeUnit u2, int expected) {
 266         int result = FileTime.from(ins).compareTo(FileTime.from(v2, u2));
 267         if (result != expected)
 268             throw new RuntimeException("unexpected order");
 269     }
 270 
 271     static void eq(long v1, TimeUnit u1, long v2, TimeUnit u2) {
 272         FileTime t1 = FileTime.from(v1, u1);
 273         FileTime t2 = FileTime.from(v2, u2);
 274         if (!t1.equals(t2))
 275             throw new RuntimeException("not equal");
 276         if (t1.hashCode() != t2.hashCode())
 277             throw new RuntimeException("hashCodes should be equal");
 278     }
 279 
 280     static void eq(Instant ins, long v2, TimeUnit u2) {
 281         FileTime t1 = FileTime.from(ins);
 282         FileTime t2 = FileTime.from(v2, u2);
 283         if (!t1.equals(t2))
 284             throw new RuntimeException("not equal");
 285         if (t1.hashCode() != t2.hashCode())
 286             throw new RuntimeException("hashCodes should be equal");
 287     }
 288 
 289     static void eqTime(long value, TimeUnit unit, Instant instant) {
 290         long secs = SECONDS.convert(value, unit);
 291         long nanos = NANOSECONDS.convert(value - unit.convert(secs, SECONDS), unit);
 292         if (nanos < 0) {    // normalize nanoOfSecond to positive
 293             secs -= 1;
 294             nanos += 1000_000_000;
 295         }
 296         if (secs != instant.getEpochSecond() || (int)nanos != instant.getNano()) {
 297             System.err.println(" ins=" + instant);
 298             throw new RuntimeException("ft and instant are not the same time point");
 299         }
 300     }
 301 
 302     static void neq(long v1, TimeUnit u1, long v2, TimeUnit u2) {
 303         FileTime t1 = FileTime.from(v1, u1);
 304         FileTime t2 = FileTime.from(v2, u2);
 305         if (t1.equals(t2))
 306             throw new RuntimeException("should not be equal");
 307     }
 308 
 309     static void neq(Instant ins, long v2, TimeUnit u2) {
 310         FileTime t1 = FileTime.from(ins);
 311         FileTime t2 = FileTime.from(v2, u2);
 312         if (t1.equals(t2))
 313             throw new RuntimeException("should not be equal");
 314     }
 315 
 316     static void to(long v, TimeUnit unit) {
 317         FileTime t = FileTime.from(v, unit);
 318         for (TimeUnit u: TimeUnit.values()) {
 319             long result = t.to(u);
 320             long expected = u.convert(v, unit);
 321             if (result != expected) {
 322                 throw new RuntimeException("unexpected result");
 323             }
 324         }
 325     }
 326 
 327     static void ts(long v, TimeUnit unit, String expected) {
 328         String result = FileTime.from(v, unit).toString();
 329         if (!result.equals(expected)) {
 330             System.err.format("FileTime.from(%d, %s).toString() failed\n", v, unit);
 331             System.err.format("Expected: %s\n", expected);
 332             System.err.format("     Got: %s\n", result);
 333             throw new RuntimeException();
 334         }
 335     }
 336 
 337     static void ts(Instant instant, String expected) {
 338         String result = FileTime.from(instant).toString();
 339         if (!result.equals(expected)) {
 340             System.err.format("FileTime.from(%s).toString() failed\n", instant);
 341             System.err.format("Expected: %s\n", expected);
 342             System.err.format("     Got: %s\n", result);
 343             throw new RuntimeException();
 344         }
 345     }
 346 }
--- EOF ---