1 /* 2 * Copyright (c) 2014, 2015, 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 8058473 26 @summary "Comparison method violates its general contract" when using Clipboard 27 Ensure that DataFlavorComparator conforms to Comparator contract 28 @author Anton Nashatyrev 29 @modules java.datatransfer/sun.datatransfer 30 @run main DataFlavorComparatorTest1 31 */ 32 import sun.datatransfer.DataFlavorUtil; 33 34 import java.awt.datatransfer.DataFlavor; 35 import java.util.Comparator; 36 37 public class DataFlavorComparatorTest1 { 38 39 public static void main(String[] args) throws Exception { 40 String[] mimes = new String[] { 41 "text/plain", 42 "text/plain; charset=unicode", 43 "text/plain; charset=cp1251", 44 "text/plain; charset=unicode; class=java.io.InputStream", 45 "text/plain; charset=unicode; class=java.io.Serializable", 46 "text/plain; charset=unicode; class=java.lang.Object", 47 "text/plain; class=java.lang.String", 48 "text/plain; class=java.io.Reader", 49 "text/plain; class=java.lang.Object", 50 "text/html", 51 "text/html; charset=unicode", 52 "text/html; charset=cp1251", 53 "text/html; charset=unicode; class=java.io.InputStream", 54 "text/html; charset=unicode; class=java.io.Serializable", 55 "text/html; charset=unicode; class=java.lang.Object", 56 "text/html; class=java.lang.String", 57 "text/html; class=java.io.Reader", 58 "text/html; class=java.lang.Object", 59 "text/unknown", 60 "text/unknown; charset=unicode", 61 "text/unknown; charset=cp1251", 62 "text/unknown; charset=unicode; class=java.io.InputStream", 63 "text/unknown; charset=unicode; class=java.io.Serializable", 64 "text/unknown; charset=unicode; class=java.lang.Object", 65 "text/unknown; class=java.lang.String", 66 "text/unknown; class=java.io.Reader", 67 "text/unknown; class=java.lang.Object", 68 "application/unknown; class=java.io.InputStream", 69 "application/unknown; class=java.lang.Object", 70 "application/unknown", 71 "application/x-java-jvm-local-objectref; class=java.io.InputStream", 72 "application/x-java-jvm-local-objectref; class=java.lang.Object", 73 "application/x-java-jvm-local-objectref", 74 "unknown/flavor", 75 "unknown/flavor; class=java.io.InputStream", 76 "unknown/flavor; class=java.lang.Object", 77 }; 78 79 DataFlavor[] flavors = new DataFlavor[mimes.length]; 80 for (int i = 0; i < flavors.length; i++) { 81 flavors[i] = new DataFlavor(mimes[i]); 82 } 83 84 testComparator(DataFlavorUtil.getDataFlavorComparator(), flavors); 85 86 System.out.println("Passed."); 87 } 88 89 private static void testComparator(Comparator cmp, DataFlavor[] flavs) 90 throws ClassNotFoundException { 91 92 for (DataFlavor x: flavs) { 93 for (DataFlavor y: flavs) { 94 if (Math.signum(cmp.compare(x,y)) != -Math.signum(cmp.compare(y,x))) { 95 throw new RuntimeException("Antisymmetry violated: " + x + ", " + y); 96 } 97 if (cmp.compare(x,y) == 0 && !x.equals(y)) { 98 throw new RuntimeException("Equals rule violated: " + x + ", " + y); 99 } 100 for (DataFlavor z: flavs) { 101 if (cmp.compare(x,y) == 0) { 102 if (Math.signum(cmp.compare(x, z)) != Math.signum(cmp.compare(y, z))) { 103 throw new RuntimeException("Transitivity (1) violated: " + x + ", " + y + ", " + z); 104 } 105 } else { 106 if (Math.signum(cmp.compare(x, y)) == Math.signum(cmp.compare(y, z))) { 107 if (Math.signum(cmp.compare(x, y)) != Math.signum(cmp.compare(x, z))) { 108 throw new RuntimeException("Transitivity (2) violated: " + x + ", " + y + ", " + z); 109 } 110 } 111 } 112 } 113 } 114 } 115 } 116 }