--- /dev/null 2014-04-02 14:26:33.000000000 +0400 +++ new/test/java/awt/datatransfer/DataFlavor/EqualsHashCodeSymmetryTest/EqualsHashCodeSymmetryTest.java 2014-04-02 14:26:32.000000000 +0400 @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +import java.awt.datatransfer.DataFlavor; + +/** + * @test + * @bug 8038999 + * @summary DataFlavor.equals is not symmetric + * @author Petr Pchelko + */ +public class EqualsHashCodeSymmetryTest { + + private static final DataFlavor[] dataFlavors = { + DataFlavor.stringFlavor, + DataFlavor.imageFlavor, + DataFlavor.javaFileListFlavor, + DataFlavor.allHtmlFlavor, + DataFlavor.selectionHtmlFlavor, + DataFlavor.fragmentHtmlFlavor, + createFlavor("text/html; class=java.lang.String"), + new DataFlavor(String.class, "My test flavor number 1"), + new DataFlavor(String.class, "My test flavor number 2"), + new DataFlavor(StringBuilder.class, "My test flavor number 1") + }; + + public static void main(String[] args) { + testEqualsSymmetry(); + testEqualsHashCodeConsistency(); + testSimpleCollision(); + } + + private static void testEqualsSymmetry() { + for (DataFlavor flavor1 : dataFlavors) { + for (DataFlavor flavor2 : dataFlavors) { + if (flavor1.equals(flavor2) != flavor2.equals(flavor1)) { + throw new RuntimeException( + String.format("Equals is not symmetric for %s and %s", flavor1, flavor2)); + } + } + } + } + + private static void testEqualsHashCodeConsistency() { + for (DataFlavor flavor1 : dataFlavors) { + for (DataFlavor flavor2 : dataFlavors) { + if ((flavor1.equals(flavor2) && flavor1.hashCode() != flavor2.hashCode())) { + throw new RuntimeException( + String.format("Equals and hash code not consistent for %s and %s", flavor1, flavor2)); + } + } + } + } + + private static void testSimpleCollision() { + if (createFlavor("text/html; class=java.lang.String").hashCode() == DataFlavor.allHtmlFlavor.hashCode()) { + throw new RuntimeException("HashCode collision because the document parameter is not used"); + } + } + + private static DataFlavor createFlavor(String mime) { + try { + return new DataFlavor(mime); + } catch (ClassNotFoundException e) { + throw new RuntimeException(e); + } + } +}