11d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/* 21d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Copyright (C) 2010 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.util.concurrent; 181d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 191d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport com.google.common.testing.NullPointerTester; 201d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 211d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport junit.framework.TestCase; 221d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 231d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertimport java.util.concurrent.atomic.AtomicReferenceArray; 241d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 251d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert/** 261d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * Unit test for {@link Atomics}. 271d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * 281d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert * @author Kurt Alfred Kluever 291d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert */ 301d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringertpublic class AtomicsTest extends TestCase { 311d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 321d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert private static final Object OBJECT = new Object(); 331d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 341d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNewReference() throws Exception { 351d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(null, Atomics.newReference().get()); 361d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 371d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 381d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNewReference_withInitialValue() throws Exception { 391d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(null, Atomics.newReference(null).get()); 401d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(OBJECT, Atomics.newReference(OBJECT).get()); 411d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 421d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 431d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNewReferenceArray_withLength() throws Exception { 441d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert int length = 42; 451d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(length); 461d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert for (int i = 0; i < length; ++i) { 471d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(null, refArray.get(i)); 481d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 491d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 501d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert refArray.get(length); 511d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 521d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IndexOutOfBoundsException expected) { 531d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 541d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 551d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 561d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNewReferenceArray_withNegativeLength() throws Exception { 571d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 581d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Atomics.newReferenceArray(-1); 591d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 601d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (NegativeArraySizeException expected) { 611d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 621d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 631d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 641d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNewReferenceArray_withStringArray() throws Exception { 651d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert String[] array = {"foo", "bar", "baz"}; 661d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert AtomicReferenceArray<String> refArray = Atomics.newReferenceArray(array); 671d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert for (int i = 0; i < array.length; ++i) { 681d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert assertEquals(array[i], refArray.get(i)); 691d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 701d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 711d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert refArray.get(array.length); 721d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 731d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (IndexOutOfBoundsException expected) { 741d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 751d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 761d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 771d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNewReferenceArray_withNullArray() throws Exception { 781d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert try { 791d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert Atomics.newReferenceArray(null); 801d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert fail(); 811d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } catch (NullPointerException expected) { 821d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 831d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 841d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert 851d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert public void testNullPointers() throws Exception { 861d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert NullPointerTester tester = new NullPointerTester(); 871d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert tester.testAllPublicConstructors(Atomics.class); // there aren't any 881d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert tester.testAllPublicStaticMethods(Atomics.class); 891d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert } 901d580d0f6ee4f21eb309ba7b509d2c6d671c4044Bjorn Bringert} 91