11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2011 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.cache; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport junit.framework.TestCase; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unit test for {@link CacheStats}. 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Charles Fry 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class CacheStatsTest extends TestCase { 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testEmpty() { 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats stats = new CacheStats(0, 0, 0, 0, 0, 0); 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.requestCount()); 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.hitCount()); 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(1.0, stats.hitRate()); 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.missCount()); 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0.0, stats.missRate()); 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.loadSuccessCount()); 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.loadExceptionCount()); 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0.0, stats.loadExceptionRate()); 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.loadCount()); 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.totalLoadTime()); 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0.0, stats.averageLoadPenalty()); 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(0, stats.evictionCount()); 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testSingle() { 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats stats = new CacheStats(11, 13, 17, 19, 23, 27); 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(24, stats.requestCount()); 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(11, stats.hitCount()); 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(11.0/24, stats.hitRate()); 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(13, stats.missCount()); 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(13.0/24, stats.missRate()); 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(17, stats.loadSuccessCount()); 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(19, stats.loadExceptionCount()); 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(19.0/36, stats.loadExceptionRate()); 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(17 + 19, stats.loadCount()); 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(23, stats.totalLoadTime()); 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(23.0/(17 + 19), stats.averageLoadPenalty()); 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(27, stats.evictionCount()); 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testMinus() { 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats one = new CacheStats(11, 13, 17, 19, 23, 27); 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats two = new CacheStats(53, 47, 43, 41, 37, 31); 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats diff = two.minus(one); 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(76, diff.requestCount()); 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(42, diff.hitCount()); 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(42.0/76, diff.hitRate()); 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(34, diff.missCount()); 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(34.0/76, diff.missRate()); 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(26, diff.loadSuccessCount()); 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(22, diff.loadExceptionCount()); 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(22.0/48, diff.loadExceptionRate()); 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(26 + 22, diff.loadCount()); 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(14, diff.totalLoadTime()); 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(14.0/(26 + 22), diff.averageLoadPenalty()); 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(4, diff.evictionCount()); 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(new CacheStats(0, 0, 0, 0, 0, 0), one.minus(two)); 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testPlus() { 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats one = new CacheStats(11, 13, 15, 13, 11, 9); 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats two = new CacheStats(53, 47, 41, 39, 37, 35); 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert CacheStats sum = two.plus(one); 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(124, sum.requestCount()); 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(64, sum.hitCount()); 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(64.0/124, sum.hitRate()); 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(60, sum.missCount()); 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(60.0/124, sum.missRate()); 911d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(56, sum.loadSuccessCount()); 921d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(52, sum.loadExceptionCount()); 931d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(52.0/108, sum.loadExceptionRate()); 941d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(56 + 52, sum.loadCount()); 951d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(48, sum.totalLoadTime()); 961d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(48.0/(56 + 52), sum.averageLoadPenalty()); 971d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(44, sum.evictionCount()); 981d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 991d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(sum, one.plus(two)); 1001d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 1011d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 102