11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2008 The Guava Authors 31d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 41d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Licensed under the Apache License, Version 2.0 (the "License"); 51d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * you may not use this file except in compliance with the License. 61d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * You may obtain a copy of the License at 71d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 81d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * http://www.apache.org/licenses/LICENSE-2.0 91d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unless required by applicable law or agreed to in writing, software 111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * distributed under the License is distributed on an "AS IS" BASIS, 121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * See the License for the specific language governing permissions and 141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * limitations under the License. 151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpackage com.google.common.base; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static java.util.concurrent.TimeUnit.MICROSECONDS; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static java.util.concurrent.TimeUnit.MILLISECONDS; 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport static java.util.concurrent.TimeUnit.NANOSECONDS; 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.annotations.GwtCompatible; 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.annotations.GwtIncompatible; 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.testing.FakeTicker; 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport junit.framework.TestCase; 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unit test for {@link Stopwatch}. 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Kevin Bourrillion 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert@GwtCompatible(emulated=true) 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class StopwatchTest extends TestCase { 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private final FakeTicker ticker = new FakeTicker(); 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private final Stopwatch stopwatch = new Stopwatch(ticker); 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testInitialState() { 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(stopwatch.isRunning()); 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(NANOSECONDS)); 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testStart() { 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertSame(stopwatch, stopwatch.start()); 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue(stopwatch.isRunning()); 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testStart_whileRunning() { 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IllegalStateException expected) { 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue(stopwatch.isRunning()); 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testStop() { 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertSame(stopwatch, stopwatch.stop()); 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(stopwatch.isRunning()); 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testStop_new() { 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IllegalStateException expected) { 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(stopwatch.isRunning()); 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testStop_alreadyStopped() { 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IllegalStateException expected) { 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(stopwatch.isRunning()); 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testReset_new() { 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.reset(); 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(stopwatch.isRunning()); 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(2); 911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(NANOSECONDS)); 921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(3); 941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(3, stopwatch.elapsedTime(NANOSECONDS)); 951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testReset_whileRunning() { 981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(NANOSECONDS)); 1011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(2); 1021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(2, stopwatch.elapsedTime(NANOSECONDS)); 1031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.reset(); 1041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertFalse(stopwatch.isRunning()); 1051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(3); 1061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(NANOSECONDS)); 1071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedTime_whileRunning() { 1101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(78); 1111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(NANOSECONDS)); 1131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(345); 1151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(345, stopwatch.elapsedTime(NANOSECONDS)); 1161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedTime_notRunning() { 1191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 1201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(4); 1221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 1231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(9); 1241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, stopwatch.elapsedTime(NANOSECONDS)); 1251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedTime_multipleSegments() { 1281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(9); 1301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 1311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(16); 1331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(9, stopwatch.elapsedTime(NANOSECONDS)); 1361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(25); 1371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(34, stopwatch.elapsedTime(NANOSECONDS)); 1381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 1401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(36); 1411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(34, stopwatch.elapsedTime(NANOSECONDS)); 1421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedTime_micros() { 1451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(999); 1471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(MICROSECONDS)); 1481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 1491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, stopwatch.elapsedTime(MICROSECONDS)); 1501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedTime_millis() { 1531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(999999); 1551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedTime(MILLISECONDS)); 1561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 1571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, stopwatch.elapsedTime(MILLISECONDS)); 1581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedMillis() { 1611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(999999); 1631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedMillis()); 1641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 1651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1, stopwatch.elapsedMillis()); 1661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedMillis_whileRunning() { 1691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(78000000); 1701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stopwatch.elapsedMillis()); 1721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(345000000); 1741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(345, stopwatch.elapsedMillis()); 1751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedMillis_notRunning() { 1781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1000000); 1791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(4000000); 1811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 1821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(9000000); 1831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, stopwatch.elapsedMillis()); 1841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testElapsedMillis_multipleSegments() { 1871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(9000000); 1891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 1901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(16000000); 1921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 1941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(9, stopwatch.elapsedMillis()); 1951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(25000000); 1961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(34, stopwatch.elapsedMillis()); 1971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 1981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.stop(); 1991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(36000000); 2001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(34, stopwatch.elapsedMillis()); 2011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2021d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2031d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @GwtIncompatible("String.format()") 2041d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testToString() { 2051d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 2061d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("0.000 ns", stopwatch.toString()); 2071d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 2081d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("1.000 ns", stopwatch.toString()); 2091d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(998); 2101d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("999.0 ns", stopwatch.toString()); 2111d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 2121d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("1.000 \u03bcs", stopwatch.toString()); 2131d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1); 2141d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("1.001 \u03bcs", stopwatch.toString()); 2151d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(8998); 2161d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("9.999 \u03bcs", stopwatch.toString()); 2171d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.reset(); 2181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 2191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(1234567); 2201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("1.235 ms", stopwatch.toString()); 2211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.reset(); 2221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert stopwatch.start(); 2231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert ticker.advance(5000000000L); 2241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals("5.000 s", stopwatch.toString()); 2251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 2271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert @GwtIncompatible("GWT is at millisecond granularity") 2281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testDefault() { 2291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // By default System.nanoTime() is used as the time source 2301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert long value = new Stopwatch().start().elapsedTime(NANOSECONDS); 2311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertTrue(value > 0); 2321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert // There isn't much else we can test about this 2331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 2341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 235