1 /* 2 * Copyright (c) 2013, 2018, 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. 22 */ 23 24 /* @test 25 * @bug 8195649 26 * @summary Basic functional test of OptionalLong 27 * @author Mike Duigou 28 * @build ObscureException 29 * @run testng BasicLong 30 */ 31 32 import java.util.NoSuchElementException; 33 import java.util.OptionalLong; 34 import java.util.concurrent.atomic.AtomicBoolean; 35 36 import static org.testng.Assert.*; 37 import org.testng.annotations.Test; 38 39 public class BasicLong { 40 static final long LONGVAL = 2_305_843_008_139_952_128L; 41 static final long UNEXPECTED = 0xFEEDBEEFCAFEBABEL; 42 43 /** 44 * Checks a block of assertions over an empty OptionalLong. 45 */ 46 void checkEmpty(OptionalLong empty) { 47 assertTrue(empty.equals(OptionalLong.empty())); 48 assertTrue(OptionalLong.empty().equals(empty)); 49 assertFalse(empty.equals(OptionalLong.of(UNEXPECTED))); 50 assertFalse(OptionalLong.of(UNEXPECTED).equals(empty)); 51 assertFalse(empty.equals("unexpected")); 52 53 assertFalse(empty.isPresent()); 54 assertEquals(empty.hashCode(), 0); 55 assertEquals(empty.orElse(UNEXPECTED), UNEXPECTED); 56 assertEquals(empty.orElseGet(() -> UNEXPECTED), UNEXPECTED); 57 58 assertThrows(NoSuchElementException.class, () -> empty.getAsLong()); 59 assertThrows(NoSuchElementException.class, () -> empty.orElseThrow()); 60 assertThrows(ObscureException.class, () -> empty.orElseThrow(ObscureException::new)); 61 62 var b = new AtomicBoolean(); 63 empty.ifPresent(s -> b.set(true)); 64 assertFalse(b.get()); 65 66 var b1 = new AtomicBoolean(false); 67 var b2 = new AtomicBoolean(false); 68 empty.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true)); 69 assertFalse(b1.get()); 70 assertTrue(b2.get()); 71 72 assertEquals(empty.toString(), "OptionalLong.empty"); 73 } 74 75 /** 76 * Checks a block of assertions over an OptionalLong that is expected to 77 * have a particular value present. 78 */ 79 void checkPresent(OptionalLong opt, long expected) { 80 assertFalse(opt.equals(OptionalLong.empty())); 81 assertFalse(OptionalLong.empty().equals(opt)); 82 assertTrue(opt.equals(OptionalLong.of(expected))); 83 assertTrue(OptionalLong.of(expected).equals(opt)); 84 assertFalse(opt.equals(OptionalLong.of(UNEXPECTED))); 85 assertFalse(OptionalLong.of(UNEXPECTED).equals(opt)); 86 assertFalse(opt.equals("unexpected")); 87 88 assertTrue(opt.isPresent()); 89 assertEquals(opt.hashCode(), Long.hashCode(expected)); 90 assertEquals(opt.orElse(UNEXPECTED), expected); 91 assertEquals(opt.orElseGet(() -> UNEXPECTED), expected); 92 93 assertEquals(opt.getAsLong(), expected); 94 assertEquals(opt.orElseThrow(), expected); 95 assertEquals(opt.orElseThrow(ObscureException::new), expected); 96 97 var b = new AtomicBoolean(false); 98 opt.ifPresent(s -> b.set(true)); 99 assertTrue(b.get()); 100 101 var b1 = new AtomicBoolean(false); 102 var b2 = new AtomicBoolean(false); 103 opt.ifPresentOrElse(s -> b1.set(true), () -> b2.set(true)); 104 assertTrue(b1.get()); 105 assertFalse(b2.get()); 106 107 assertEquals(opt.toString(), "OptionalLong[" + expected + "]"); 108 } 109 110 @Test(groups = "unit") 111 public void testEmpty() { 112 checkEmpty(OptionalLong.empty()); 113 } 114 115 @Test(groups = "unit") 116 public void testPresent() { 117 checkPresent(OptionalLong.of(LONGVAL), LONGVAL); 118 } 119 120 @Test(groups = "unit") 121 public void testStreamEmpty() { 122 assertEquals(OptionalLong.empty().stream().toArray(), new long[] { }); 123 } 124 125 @Test(groups = "unit") 126 public void testStreamPresent() { 127 assertEquals(OptionalLong.of(LONGVAL).stream().toArray(), new long[] { LONGVAL }); 128 } 129 }